Merge tag 'v2.6.4' into upstream

version 2.6.4

Signed-off-by: Manoj Srivastava <srivasta@debian.org>

26 files changed, 1526 insertions, 962 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 416995e..e379692 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,68 +1,83 @@
 AM_YFLAGS = -d
-localedir = $(datadir)/locale
-AM_CPPFLAGS = -DLOCALEDIR=\"$(localedir)\" -I$(top_srcdir)/intl
+AM_CPPFLAGS = -DLOCALEDIR=\"$(localedir)\"
 LIBS = @LIBS@
 
 m4 = @M4@
 
 bin_PROGRAMS = flex
+if ENABLE_BOOTSTRAP
 noinst_PROGRAMS = stage1flex
-lib_LTLIBRARIES = \
-	libfl.la \
-	libfl_pic.la
+endif
+
+if ENABLE_LIBFL
+lib_LTLIBRARIES = libfl.la
+endif
+libfl_la_SOURCES = \
+	libmain.c \
+	libyywrap.c
+libfl_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
 
 stage1flex_SOURCES = \
 	scan.l \
 	$(COMMON_SOURCES)
 
+if CROSS
+stage1flex_LDADD =
+stage1flex_SOURCES += \
+		      ../lib/malloc.c \
+		      ../lib/realloc.c
+stage1flex_LINK = $(LIBTOOL) --tag=CC --mode=link $(CC_FOR_BUILD) \
+		  $(CFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $@
+
+$(stage1flex_OBJECTS): CC=$(CC_FOR_BUILD)
+$(stage1flex_OBJECTS): CFLAGS=$(CFLAGS_FOR_BUILD)
+$(stage1flex_OBJECTS): CPP=$(CPP_FOR_BUILD)
+$(stage1flex_OBJECTS): CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+$(stage1flex_OBJECTS): LDFLAGS=$(LDFLAGS_FOR_BUILD)
+else
+stage1flex_LDADD = $(LDADD)
+stage1flex_LINK = $(LINK)
+stage1flex_CFLAGS = $(AM_CFLAGS)
+endif
+
 flex_SOURCES = \
-	stage1scan.l \
 	$(COMMON_SOURCES)
 
+nodist_flex_SOURCES = \
+	stage1scan.c
+
+flex_CFLAGS = $(AM_CFLAGS) $(WARNINGFLAGS)
+
 COMMON_SOURCES = \
 	buf.c \
 	ccl.c \
 	dfa.c \
 	ecs.c \
 	filter.c \
+	flexdef.h \
+	flexint.h \
 	gen.c \
 	main.c \
 	misc.c \
 	nfa.c \
 	options.c \
+	options.h \
 	parse.y \
 	regex.c \
 	scanflags.c \
 	scanopt.c \
+	scanopt.h \
 	skel.c \
 	sym.c \
 	tables.c \
+	tables.h \
 	tables_shared.c \
+	tables_shared.h \
 	tblcmp.c \
+	version.h \
 	yylex.c
 
-LDADD = ../lib/libcompat.la @LIBINTL@
-
-libfl_la_SOURCES = \
-	libmain.c \
-	libyywrap.c
-
-libfl_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
-
-libfl_pic_la_SOURCES = \
-	libmain.c \
-	libyywrap.c
-
-libfl_pic_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
-
-noinst_HEADERS = \
-	flexdef.h \
-	flexint.h \
-	version.h \
-	options.h \
-	scanopt.h \
-	tables.h \
-	tables_shared.h
+LDADD = $(LIBOBJS) @LIBINTL@
 
 include_HEADERS = \
 	FlexLexer.h
@@ -72,52 +87,38 @@ EXTRA_DIST = \
 	mkskel.sh \
 	gettext.h
 
-DISTCLEANFILES = stage1scan.c
+CLEANFILES = stage1scan.c stage1flex$(EXEEXT)
 
 MAINTAINERCLEANFILES = skel.c
 
-$(srcdir)/skel.c: flex.skl mkskel.sh flexint.h tables_shared.h
-	sed 's/m4_/m4postproc_/g; s/m4preproc_/m4_/g' $(srcdir)/flex.skl | \
-	  $(m4) -P -I $(srcdir)						   \
-	    -DFLEX_MAJOR_VERSION=`   echo $(VERSION)|cut -f 1 -d .`	   \
-	    -DFLEX_MINOR_VERSION=`   echo $(VERSION)|cut -f 2 -d .`	   \
-	    -DFLEX_SUBMINOR_VERSION=`echo $(VERSION)|cut -f 3 -d .` |	   \
-	  sed 's/m4postproc_/m4_/g' |					   \
-	  $(SHELL) $(srcdir)/mkskel.sh >skel.c.tmp
-	mv skel.c.tmp $(srcdir)/skel.c
-
-stage1scan.l: scan.l
-	cp $(srcdir)/scan.l $(srcdir)/stage1scan.l
-
-stage1scan.c: stage1scan.l stage1flex$(EXEEXT)
-	$(top_builddir)/src/stage1flex$(EXEEXT) -o $@ $<
-
-# Explicitly describe dependencies.
-# You can recreate this with `gcc -I. -MM *.c'
-buf.o: buf.c flexdef.h flexint.h
-ccl.o: ccl.c flexdef.h flexint.h
-dfa.o: dfa.c flexdef.h flexint.h tables.h tables_shared.h
-ecs.o: ecs.c flexdef.h flexint.h
-scanflags.o: scanflags.c flexdef.h flexint.h
-gen.o: gen.c flexdef.h flexint.h tables.h tables_shared.h
-libmain.o: libmain.c
-libyywrap.o: libyywrap.c
-main.o: main.c flexdef.h flexint.h version.h options.h scanopt.h \
- tables.h tables_shared.h
-misc.o: misc.c flexdef.h flexint.h tables.h tables_shared.h
-nfa.o: nfa.c flexdef.h flexint.h
-options.o: options.c options.h scanopt.h flexdef.h flexint.h
-parse.o: parse.c flexdef.h flexint.h tables.h tables_shared.h
-scan.o: scan.c flexdef.h flexint.h parse.h
-scanopt.o: scanopt.c flexdef.h flexint.h scanopt.h
-skel.o: skel.c flexdef.h flexint.h
-sym.o: sym.c flexdef.h flexint.h
-tables.o: tables.c flexdef.h flexint.h tables.h tables_shared.h
-tables_shared.o: tables_shared.c flexdef.h flexint.h tables.h \
- tables_shared.h
-tblcmp.o: tblcmp.c flexdef.h flexint.h
-yylex.o: yylex.c flexdef.h flexint.h parse.h
-filter.o: filter.c flexdef.h flexint.h
+skel.c: flex.skl mkskel.sh flexint.h tables_shared.h tables_shared.c
+	$(SHELL) $(srcdir)/mkskel.sh $(srcdir) $(m4) $(VERSION) > $@.tmp
+	mv $@.tmp $@
+
+if ENABLE_BOOTSTRAP
+stage1scan.c: scan.l stage1flex$(EXEEXT)
+	./stage1flex$(EXEEXT) $(AM_LFLAGS) $(LFLAGS) -o $@ $(srcdir)/scan.l
+else
+stage1scan.c: scan.c
+	sed 's|^\(#line .*\)"'`printf %s $< | sed 's|[][\\\\.*]|\\\\&|g'`'"|\1"$@"|g' $< > $@
+endif
+
+dist-hook: scan.l flex$(EXEEXT)
+	chmod u+w $(distdir)/scan.c && \
+	./flex$(EXEEXT) -o scan.c $< && \
+	mv scan.c $(distdir)
+
+# make needs to be told to make parse.h so that parallelized runs will
+# not fail.
+
+stage1flex-main.$(OBJEXT): parse.h
+flex-main.$(OBJEXT): parse.h
+
+stage1flex-yylex.$(OBJEXT): parse.h
+flex-yylex.$(OBJEXT): parse.h
+
+stage1flex-scan.$(OBJEXT): parse.h
+flex-stage1scan.$(OBJEXT): parse.h
 
 # Run GNU indent on sources. Don't run this unless all the sources compile cleanly.
 #
@@ -154,11 +155,14 @@ indentfiles = \
 	tables_shared.h \
 	tblcmp.c
 
-indent:
-	if [ -f .indent.pro ] ; then \
-	for f in $(indentfiles);\
-	do\
-		echo indenting $$f ;\
-		$(indent) < $$f >/dev/null && indent $$f || echo $$f FAILED to indent ;\
-	done \
-	fi
+indent: $(top_srcdir)/.indent.pro
+	cd $(top_srcdir) && \
+	for f in $(indentfiles); do \
+		f=src/$$f; \
+		echo indenting $$f; \
+		INDENT_PROFILE=.indent.pro $(INDENT) <$$f >/dev/null && \
+		INDENT_PROFILE=.indent.pro $(INDENT) $$f || \
+		echo $$f FAILED to indent; \
+	done;
+
+.PHONY: indent
diff --git a/src/Makefile.in b/src/Makefile.in
index 46b0c6c..d868c54 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15 from Makefile.am.
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2014 Free Software Foundation, Inc.
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -91,21 +91,26 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 bin_PROGRAMS = flex$(EXEEXT)
-noinst_PROGRAMS = stage1flex$(EXEEXT)
+@ENABLE_BOOTSTRAP_TRUE@noinst_PROGRAMS = stage1flex$(EXEEXT)
+@CROSS_TRUE@am__append_1 = \
+@CROSS_TRUE@		      ../lib/malloc.c \
+@CROSS_TRUE@		      ../lib/realloc.c
+
 subdir = src
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
-	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libtool.m4 \
-	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
-	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
-	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/m4/ax_prog_cc_for_build.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/lib-ld.m4 \
+	$(top_srcdir)/m4/lib-link.m4 $(top_srcdir)/m4/lib-prefix.m4 \
+	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \
+	$(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \
+	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/m4/nls.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/progtest.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 DIST_COMMON = $(srcdir)/Makefile.am $(include_HEADERS) \
-	$(noinst_HEADERS) $(am__DIST_COMMON)
+	$(am__DIST_COMMON)
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = config.h
 CONFIG_CLEAN_FILES =
@@ -150,27 +155,48 @@ am__v_lt_1 =
 libfl_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libfl_la_LDFLAGS) $(LDFLAGS) -o $@
-libfl_pic_la_LIBADD =
-am_libfl_pic_la_OBJECTS = libmain.lo libyywrap.lo
-libfl_pic_la_OBJECTS = $(am_libfl_pic_la_OBJECTS)
-libfl_pic_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
-	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
-	$(libfl_pic_la_LDFLAGS) $(LDFLAGS) -o $@
+@ENABLE_LIBFL_TRUE@am_libfl_la_rpath = -rpath $(libdir)
 PROGRAMS = $(bin_PROGRAMS) $(noinst_PROGRAMS)
-am__objects_1 = buf.$(OBJEXT) ccl.$(OBJEXT) dfa.$(OBJEXT) \
-	ecs.$(OBJEXT) filter.$(OBJEXT) gen.$(OBJEXT) main.$(OBJEXT) \
-	misc.$(OBJEXT) nfa.$(OBJEXT) options.$(OBJEXT) parse.$(OBJEXT) \
-	regex.$(OBJEXT) scanflags.$(OBJEXT) scanopt.$(OBJEXT) \
-	skel.$(OBJEXT) sym.$(OBJEXT) tables.$(OBJEXT) \
-	tables_shared.$(OBJEXT) tblcmp.$(OBJEXT) yylex.$(OBJEXT)
-am_flex_OBJECTS = stage1scan.$(OBJEXT) $(am__objects_1)
-flex_OBJECTS = $(am_flex_OBJECTS)
+LIBOBJDIR = ../lib/
+am__objects_1 = flex-buf.$(OBJEXT) flex-ccl.$(OBJEXT) \
+	flex-dfa.$(OBJEXT) flex-ecs.$(OBJEXT) flex-filter.$(OBJEXT) \
+	flex-gen.$(OBJEXT) flex-main.$(OBJEXT) flex-misc.$(OBJEXT) \
+	flex-nfa.$(OBJEXT) flex-options.$(OBJEXT) flex-parse.$(OBJEXT) \
+	flex-regex.$(OBJEXT) flex-scanflags.$(OBJEXT) \
+	flex-scanopt.$(OBJEXT) flex-skel.$(OBJEXT) flex-sym.$(OBJEXT) \
+	flex-tables.$(OBJEXT) flex-tables_shared.$(OBJEXT) \
+	flex-tblcmp.$(OBJEXT) flex-yylex.$(OBJEXT)
+am_flex_OBJECTS = $(am__objects_1)
+nodist_flex_OBJECTS = flex-stage1scan.$(OBJEXT)
+flex_OBJECTS = $(am_flex_OBJECTS) $(nodist_flex_OBJECTS)
 flex_LDADD = $(LDADD)
-flex_DEPENDENCIES = ../lib/libcompat.la
-am_stage1flex_OBJECTS = scan.$(OBJEXT) $(am__objects_1)
+flex_DEPENDENCIES = $(LIBOBJS)
+flex_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(flex_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+am__stage1flex_SOURCES_DIST = scan.l buf.c ccl.c dfa.c ecs.c filter.c \
+	flexdef.h flexint.h gen.c main.c misc.c nfa.c options.c \
+	options.h parse.y regex.c scanflags.c scanopt.c scanopt.h \
+	skel.c sym.c tables.c tables.h tables_shared.c tables_shared.h \
+	tblcmp.c version.h yylex.c ../lib/malloc.c ../lib/realloc.c
+am__objects_2 = stage1flex-buf.$(OBJEXT) stage1flex-ccl.$(OBJEXT) \
+	stage1flex-dfa.$(OBJEXT) stage1flex-ecs.$(OBJEXT) \
+	stage1flex-filter.$(OBJEXT) stage1flex-gen.$(OBJEXT) \
+	stage1flex-main.$(OBJEXT) stage1flex-misc.$(OBJEXT) \
+	stage1flex-nfa.$(OBJEXT) stage1flex-options.$(OBJEXT) \
+	stage1flex-parse.$(OBJEXT) stage1flex-regex.$(OBJEXT) \
+	stage1flex-scanflags.$(OBJEXT) stage1flex-scanopt.$(OBJEXT) \
+	stage1flex-skel.$(OBJEXT) stage1flex-sym.$(OBJEXT) \
+	stage1flex-tables.$(OBJEXT) stage1flex-tables_shared.$(OBJEXT) \
+	stage1flex-tblcmp.$(OBJEXT) stage1flex-yylex.$(OBJEXT)
+am__dirstamp = $(am__leading_dot)dirstamp
+@CROSS_TRUE@am__objects_3 = ../lib/stage1flex-malloc.$(OBJEXT) \
+@CROSS_TRUE@	../lib/stage1flex-realloc.$(OBJEXT)
+am_stage1flex_OBJECTS = stage1flex-scan.$(OBJEXT) $(am__objects_2) \
+	$(am__objects_3)
 stage1flex_OBJECTS = $(am_stage1flex_OBJECTS)
-stage1flex_LDADD = $(LDADD)
-stage1flex_DEPENDENCIES = ../lib/libcompat.la
+am__DEPENDENCIES_1 = $(LIBOBJS)
+@CROSS_FALSE@stage1flex_DEPENDENCIES = $(am__DEPENDENCIES_1)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -222,16 +248,16 @@ AM_V_YACC = $(am__v_YACC_@AM_V@)
 am__v_YACC_ = $(am__v_YACC_@AM_DEFAULT_V@)
 am__v_YACC_0 = @echo "  YACC    " $@;
 am__v_YACC_1 = 
-SOURCES = $(libfl_la_SOURCES) $(libfl_pic_la_SOURCES) $(flex_SOURCES) \
+SOURCES = $(libfl_la_SOURCES) $(flex_SOURCES) $(nodist_flex_SOURCES) \
 	$(stage1flex_SOURCES)
-DIST_SOURCES = $(libfl_la_SOURCES) $(libfl_pic_la_SOURCES) \
-	$(flex_SOURCES) $(stage1flex_SOURCES)
+DIST_SOURCES = $(libfl_la_SOURCES) $(flex_SOURCES) \
+	$(am__stage1flex_SOURCES_DIST)
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
     *) (install-info --version) >/dev/null 2>&1;; \
   esac
-HEADERS = $(include_HEADERS) $(noinst_HEADERS)
+HEADERS = $(include_HEADERS)
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) \
 	$(LISP)config.h.in
 # Read a list of newline-separated strings from the standard input,
@@ -254,7 +280,8 @@ ETAGS = etags
 CTAGS = ctags
 am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
 	$(top_srcdir)/build-aux/depcomp $(top_srcdir)/build-aux/ylwrap \
-	parse.c parse.h scan.c stage1scan.c
+	$(top_srcdir)/lib/malloc.c $(top_srcdir)/lib/realloc.c parse.c \
+	parse.h scan.c
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 ALLOCA = @ALLOCA@
@@ -265,12 +292,17 @@ AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
-BISON = @BISON@
+BUILD_EXEEXT = @BUILD_EXEEXT@
+BUILD_OBJEXT = @BUILD_OBJEXT@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
+CC_FOR_BUILD = @CC_FOR_BUILD@
 CFLAGS = @CFLAGS@
+CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
+CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@
+CPP_FOR_BUILD = @CPP_FOR_BUILD@
 CXX = @CXX@
 CXXCPP = @CXXCPP@
 CXXDEPMODE = @CXXDEPMODE@
@@ -302,12 +334,14 @@ INTLLIBS = @INTLLIBS@
 INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
 LD = @LD@
 LDFLAGS = @LDFLAGS@
+LDFLAGS_FOR_BUILD = @LDFLAGS_FOR_BUILD@
 LEX = @LEX@
 LEXLIB = @LEXLIB@
 LEX_OUTPUT_ROOT = @LEX_OUTPUT_ROOT@
 LIBICONV = @LIBICONV@
 LIBINTL = @LIBINTL@
 LIBOBJS = @LIBOBJS@
+LIBPTHREAD = @LIBPTHREAD@
 LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
@@ -347,6 +381,7 @@ STRIP = @STRIP@
 TEXI2DVI = @TEXI2DVI@
 USE_NLS = @USE_NLS@
 VERSION = @VERSION@
+WARNINGFLAGS = @WARNINGFLAGS@
 XGETTEXT = @XGETTEXT@
 XGETTEXT_015 = @XGETTEXT_015@
 XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
@@ -358,6 +393,7 @@ abs_top_builddir = @abs_top_builddir@
 abs_top_srcdir = @abs_top_srcdir@
 ac_ct_AR = @ac_ct_AR@
 ac_ct_CC = @ac_ct_CC@
+ac_ct_CC_FOR_BUILD = @ac_ct_CC_FOR_BUILD@
 ac_ct_CXX = @ac_ct_CXX@
 ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
 am__include = @am__include@
@@ -388,7 +424,7 @@ infodir = @infodir@
 install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
-localedir = $(datadir)/locale
+localedir = @localedir@
 localstatedir = @localstatedir@
 mandir = @mandir@
 mkdir_p = @mkdir_p@
@@ -397,6 +433,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
@@ -406,62 +443,59 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AM_YFLAGS = -d
-AM_CPPFLAGS = -DLOCALEDIR=\"$(localedir)\" -I$(top_srcdir)/intl
+AM_CPPFLAGS = -DLOCALEDIR=\"$(localedir)\"
 m4 = @M4@
-lib_LTLIBRARIES = \
-	libfl.la \
-	libfl_pic.la
-
-stage1flex_SOURCES = \
-	scan.l \
-	$(COMMON_SOURCES)
+@ENABLE_LIBFL_TRUE@lib_LTLIBRARIES = libfl.la
+libfl_la_SOURCES = \
+	libmain.c \
+	libyywrap.c
 
+libfl_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
+stage1flex_SOURCES = scan.l $(COMMON_SOURCES) $(am__append_1)
+@CROSS_FALSE@stage1flex_LDADD = $(LDADD)
+@CROSS_TRUE@stage1flex_LDADD = 
+@CROSS_FALSE@stage1flex_LINK = $(LINK)
+@CROSS_TRUE@stage1flex_LINK = $(LIBTOOL) --tag=CC --mode=link $(CC_FOR_BUILD) \
+@CROSS_TRUE@		  $(CFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $@
+
+@CROSS_FALSE@stage1flex_CFLAGS = $(AM_CFLAGS)
 flex_SOURCES = \
-	stage1scan.l \
 	$(COMMON_SOURCES)
 
+nodist_flex_SOURCES = \
+	stage1scan.c
+
+flex_CFLAGS = $(AM_CFLAGS) $(WARNINGFLAGS)
 COMMON_SOURCES = \
 	buf.c \
 	ccl.c \
 	dfa.c \
 	ecs.c \
 	filter.c \
+	flexdef.h \
+	flexint.h \
 	gen.c \
 	main.c \
 	misc.c \
 	nfa.c \
 	options.c \
+	options.h \
 	parse.y \
 	regex.c \
 	scanflags.c \
 	scanopt.c \
+	scanopt.h \
 	skel.c \
 	sym.c \
 	tables.c \
+	tables.h \
 	tables_shared.c \
+	tables_shared.h \
 	tblcmp.c \
-	yylex.c
-
-LDADD = ../lib/libcompat.la @LIBINTL@
-libfl_la_SOURCES = \
-	libmain.c \
-	libyywrap.c
-
-libfl_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
-libfl_pic_la_SOURCES = \
-	libmain.c \
-	libyywrap.c
-
-libfl_pic_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
-noinst_HEADERS = \
-	flexdef.h \
-	flexint.h \
 	version.h \
-	options.h \
-	scanopt.h \
-	tables.h \
-	tables_shared.h
+	yylex.c
 
+LDADD = $(LIBOBJS) @LIBINTL@
 include_HEADERS = \
 	FlexLexer.h
 
@@ -470,7 +504,7 @@ EXTRA_DIST = \
 	mkskel.sh \
 	gettext.h
 
-DISTCLEANFILES = stage1scan.c
+CLEANFILES = stage1scan.c stage1flex$(EXEEXT)
 MAINTAINERCLEANFILES = skel.c
 
 # Run GNU indent on sources. Don't run this unless all the sources compile cleanly.
@@ -522,9 +556,9 @@ $(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
 	      exit 1;; \
 	  esac; \
 	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/Makefile'; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu src/Makefile
+	  $(AUTOMAKE) --foreign src/Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
 	  *config.status*) \
@@ -594,10 +628,7 @@ clean-libLTLIBRARIES:
 	}
 
 libfl.la: $(libfl_la_OBJECTS) $(libfl_la_DEPENDENCIES) $(EXTRA_libfl_la_DEPENDENCIES) 
-	$(AM_V_CCLD)$(libfl_la_LINK) -rpath $(libdir) $(libfl_la_OBJECTS) $(libfl_la_LIBADD) $(LIBS)
-
-libfl_pic.la: $(libfl_pic_la_OBJECTS) $(libfl_pic_la_DEPENDENCIES) $(EXTRA_libfl_pic_la_DEPENDENCIES) 
-	$(AM_V_CCLD)$(libfl_pic_la_LINK) -rpath $(libdir) $(libfl_pic_la_OBJECTS) $(libfl_pic_la_LIBADD) $(LIBS)
+	$(AM_V_CCLD)$(libfl_la_LINK) $(am_libfl_la_rpath) $(libfl_la_OBJECTS) $(libfl_la_LIBADD) $(LIBS)
 install-binPROGRAMS: $(bin_PROGRAMS)
 	@$(NORMAL_INSTALL)
 	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
@@ -678,64 +709,718 @@ parse.h: parse.c
 
 flex$(EXEEXT): $(flex_OBJECTS) $(flex_DEPENDENCIES) $(EXTRA_flex_DEPENDENCIES) 
 	@rm -f flex$(EXEEXT)
-	$(AM_V_CCLD)$(LINK) $(flex_OBJECTS) $(flex_LDADD) $(LIBS)
+	$(AM_V_CCLD)$(flex_LINK) $(flex_OBJECTS) $(flex_LDADD) $(LIBS)
+../lib/$(am__dirstamp):
+	@$(MKDIR_P) ../lib
+	@: > ../lib/$(am__dirstamp)
+../lib/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) ../lib/$(DEPDIR)
+	@: > ../lib/$(DEPDIR)/$(am__dirstamp)
+../lib/stage1flex-malloc.$(OBJEXT): ../lib/$(am__dirstamp) \
+	../lib/$(DEPDIR)/$(am__dirstamp)
+../lib/stage1flex-realloc.$(OBJEXT): ../lib/$(am__dirstamp) \
+	../lib/$(DEPDIR)/$(am__dirstamp)
 
 stage1flex$(EXEEXT): $(stage1flex_OBJECTS) $(stage1flex_DEPENDENCIES) $(EXTRA_stage1flex_DEPENDENCIES) 
 	@rm -f stage1flex$(EXEEXT)
-	$(AM_V_CCLD)$(LINK) $(stage1flex_OBJECTS) $(stage1flex_LDADD) $(LIBS)
+	$(AM_V_GEN)$(stage1flex_LINK) $(stage1flex_OBJECTS) $(stage1flex_LDADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
+	-rm -f ../lib/*.$(OBJEXT)
 
 distclean-compile:
 	-rm -f *.tab.c
 
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/buf.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ccl.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dfa.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ecs.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/filter.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gen.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@../lib/$(DEPDIR)/malloc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@../lib/$(DEPDIR)/realloc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@../lib/$(DEPDIR)/stage1flex-malloc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@../lib/$(DEPDIR)/stage1flex-realloc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-buf.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-ccl.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-dfa.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-ecs.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-filter.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-gen.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-main.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-misc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-nfa.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-options.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-parse.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-regex.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-scanflags.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-scanopt.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-skel.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-stage1scan.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-sym.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-tables.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-tables_shared.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-tblcmp.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flex-yylex.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libmain.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libyywrap.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/main.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/misc.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/nfa.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/options.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/parse.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/regex.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/scan.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/scanflags.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/scanopt.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/skel.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1scan.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sym.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tables.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tables_shared.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tblcmp.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/yylex.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-buf.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-ccl.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-dfa.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-ecs.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-filter.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-gen.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-main.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-misc.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-nfa.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-options.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-parse.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-regex.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-scan.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-scanflags.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-scanopt.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-skel.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-sym.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-tables.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-tables_shared.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-tblcmp.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stage1flex-yylex.Po@am__quote@
 
 .c.o:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
 
 .c.obj:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.obj$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
 
 .c.lo:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.lo$$||'`;\
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
 
+flex-buf.o: buf.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-buf.o -MD -MP -MF $(DEPDIR)/flex-buf.Tpo -c -o flex-buf.o `test -f 'buf.c' || echo '$(srcdir)/'`buf.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-buf.Tpo $(DEPDIR)/flex-buf.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='buf.c' object='flex-buf.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-buf.o `test -f 'buf.c' || echo '$(srcdir)/'`buf.c
+
+flex-buf.obj: buf.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-buf.obj -MD -MP -MF $(DEPDIR)/flex-buf.Tpo -c -o flex-buf.obj `if test -f 'buf.c'; then $(CYGPATH_W) 'buf.c'; else $(CYGPATH_W) '$(srcdir)/buf.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-buf.Tpo $(DEPDIR)/flex-buf.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='buf.c' object='flex-buf.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-buf.obj `if test -f 'buf.c'; then $(CYGPATH_W) 'buf.c'; else $(CYGPATH_W) '$(srcdir)/buf.c'; fi`
+
+flex-ccl.o: ccl.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-ccl.o -MD -MP -MF $(DEPDIR)/flex-ccl.Tpo -c -o flex-ccl.o `test -f 'ccl.c' || echo '$(srcdir)/'`ccl.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-ccl.Tpo $(DEPDIR)/flex-ccl.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='ccl.c' object='flex-ccl.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-ccl.o `test -f 'ccl.c' || echo '$(srcdir)/'`ccl.c
+
+flex-ccl.obj: ccl.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-ccl.obj -MD -MP -MF $(DEPDIR)/flex-ccl.Tpo -c -o flex-ccl.obj `if test -f 'ccl.c'; then $(CYGPATH_W) 'ccl.c'; else $(CYGPATH_W) '$(srcdir)/ccl.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-ccl.Tpo $(DEPDIR)/flex-ccl.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='ccl.c' object='flex-ccl.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-ccl.obj `if test -f 'ccl.c'; then $(CYGPATH_W) 'ccl.c'; else $(CYGPATH_W) '$(srcdir)/ccl.c'; fi`
+
+flex-dfa.o: dfa.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-dfa.o -MD -MP -MF $(DEPDIR)/flex-dfa.Tpo -c -o flex-dfa.o `test -f 'dfa.c' || echo '$(srcdir)/'`dfa.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-dfa.Tpo $(DEPDIR)/flex-dfa.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='dfa.c' object='flex-dfa.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-dfa.o `test -f 'dfa.c' || echo '$(srcdir)/'`dfa.c
+
+flex-dfa.obj: dfa.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-dfa.obj -MD -MP -MF $(DEPDIR)/flex-dfa.Tpo -c -o flex-dfa.obj `if test -f 'dfa.c'; then $(CYGPATH_W) 'dfa.c'; else $(CYGPATH_W) '$(srcdir)/dfa.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-dfa.Tpo $(DEPDIR)/flex-dfa.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='dfa.c' object='flex-dfa.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-dfa.obj `if test -f 'dfa.c'; then $(CYGPATH_W) 'dfa.c'; else $(CYGPATH_W) '$(srcdir)/dfa.c'; fi`
+
+flex-ecs.o: ecs.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-ecs.o -MD -MP -MF $(DEPDIR)/flex-ecs.Tpo -c -o flex-ecs.o `test -f 'ecs.c' || echo '$(srcdir)/'`ecs.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-ecs.Tpo $(DEPDIR)/flex-ecs.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='ecs.c' object='flex-ecs.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-ecs.o `test -f 'ecs.c' || echo '$(srcdir)/'`ecs.c
+
+flex-ecs.obj: ecs.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-ecs.obj -MD -MP -MF $(DEPDIR)/flex-ecs.Tpo -c -o flex-ecs.obj `if test -f 'ecs.c'; then $(CYGPATH_W) 'ecs.c'; else $(CYGPATH_W) '$(srcdir)/ecs.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-ecs.Tpo $(DEPDIR)/flex-ecs.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='ecs.c' object='flex-ecs.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-ecs.obj `if test -f 'ecs.c'; then $(CYGPATH_W) 'ecs.c'; else $(CYGPATH_W) '$(srcdir)/ecs.c'; fi`
+
+flex-filter.o: filter.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -MT flex-filter.o -MD -MP -MF $(DEPDIR)/flex-filter.Tpo -c -o flex-filter.o `test -f 'filter.c' || echo '$(srcdir)/'`filter.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/flex-filter.Tpo $(DEPDIR)/flex-filter.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='filter.c' object='flex-filter.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(flex_CFLAGS) $(CFLAGS) -c -o flex-filter.o `test -f 'filter.c' || echo '$(srcdir)/'`filter.c
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 .l.c:
 	$(AM_V_LEX)$(am__skiplex) $(SHELL) $(YLWRAP) $< $(LEX_OUTPUT_ROOT).c $@ -- $(LEXCOMPILE)
 
@@ -851,6 +1536,9 @@ distdir: $(DISTFILES)
 	    || exit 1; \
 	  fi; \
 	done
+	$(MAKE) $(AM_MAKEFLAGS) \
+	  top_distdir="$(top_distdir)" distdir="$(distdir)" \
+	  dist-hook
 check-am: all-am
 check: check-am
 all-am: Makefile $(LTLIBRARIES) $(PROGRAMS) $(HEADERS) config.h
@@ -880,13 +1568,16 @@ install-strip:
 	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
 	fi
 mostlyclean-generic:
+	-test -z "$(LIBOBJS)" || rm -f $(LIBOBJS)
 
 clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
 
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
 	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-	-test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
+	-rm -f ../lib/$(DEPDIR)/$(am__dirstamp)
+	-rm -f ../lib/$(am__dirstamp)
 
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
@@ -894,7 +1585,6 @@ maintainer-clean-generic:
 	-rm -f parse.c
 	-rm -f parse.h
 	-rm -f scan.c
-	-rm -f stage1scan.c
 	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
 clean: clean-am
 
@@ -902,7 +1592,7 @@ clean-am: clean-binPROGRAMS clean-generic clean-libLTLIBRARIES \
 	clean-libtool clean-noinstPROGRAMS mostlyclean-am
 
 distclean: distclean-am
-	-rm -rf ./$(DEPDIR)
+	-rm -rf ../lib/$(DEPDIR) ./$(DEPDIR)
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-hdr distclean-tags
@@ -948,7 +1638,7 @@ install-ps-am:
 installcheck-am: installcheck-binPROGRAMS
 
 maintainer-clean: maintainer-clean-am
-	-rm -rf ./$(DEPDIR)
+	-rm -rf ../lib/$(DEPDIR) ./$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
@@ -973,75 +1663,68 @@ uninstall-am: uninstall-binPROGRAMS uninstall-includeHEADERS \
 .PHONY: CTAGS GTAGS TAGS all all-am check check-am clean \
 	clean-binPROGRAMS clean-generic clean-libLTLIBRARIES \
 	clean-libtool clean-noinstPROGRAMS cscopelist-am ctags \
-	ctags-am distclean distclean-compile distclean-generic \
-	distclean-hdr distclean-libtool distclean-tags distdir dvi \
-	dvi-am html html-am info info-am install install-am \
-	install-binPROGRAMS install-data install-data-am install-dvi \
-	install-dvi-am install-exec install-exec-am install-html \
-	install-html-am install-includeHEADERS install-info \
-	install-info-am install-libLTLIBRARIES install-man install-pdf \
-	install-pdf-am install-ps install-ps-am install-strip \
-	installcheck installcheck-am installcheck-binPROGRAMS \
-	installdirs maintainer-clean maintainer-clean-generic \
-	mostlyclean mostlyclean-compile mostlyclean-generic \
-	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
-	uninstall-am uninstall-binPROGRAMS uninstall-includeHEADERS \
+	ctags-am dist-hook distclean distclean-compile \
+	distclean-generic distclean-hdr distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-binPROGRAMS install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am \
+	install-includeHEADERS install-info install-info-am \
+	install-libLTLIBRARIES install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installcheck-binPROGRAMS installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-binPROGRAMS uninstall-includeHEADERS \
 	uninstall-libLTLIBRARIES
 
 .PRECIOUS: Makefile
 
 
-$(srcdir)/skel.c: flex.skl mkskel.sh flexint.h tables_shared.h
-	sed 's/m4_/m4postproc_/g; s/m4preproc_/m4_/g' $(srcdir)/flex.skl | \
-	  $(m4) -P -I $(srcdir)						   \
-	    -DFLEX_MAJOR_VERSION=`   echo $(VERSION)|cut -f 1 -d .`	   \
-	    -DFLEX_MINOR_VERSION=`   echo $(VERSION)|cut -f 2 -d .`	   \
-	    -DFLEX_SUBMINOR_VERSION=`echo $(VERSION)|cut -f 3 -d .` |	   \
-	  sed 's/m4postproc_/m4_/g' |					   \
-	  $(SHELL) $(srcdir)/mkskel.sh >skel.c.tmp
-	mv skel.c.tmp $(srcdir)/skel.c
-
-stage1scan.l: scan.l
-	cp $(srcdir)/scan.l $(srcdir)/stage1scan.l
-
-stage1scan.c: stage1scan.l stage1flex$(EXEEXT)
-	$(top_builddir)/src/stage1flex$(EXEEXT) -o $@ $<
-
-# Explicitly describe dependencies.
-# You can recreate this with `gcc -I. -MM *.c'
-buf.o: buf.c flexdef.h flexint.h
-ccl.o: ccl.c flexdef.h flexint.h
-dfa.o: dfa.c flexdef.h flexint.h tables.h tables_shared.h
-ecs.o: ecs.c flexdef.h flexint.h
-scanflags.o: scanflags.c flexdef.h flexint.h
-gen.o: gen.c flexdef.h flexint.h tables.h tables_shared.h
-libmain.o: libmain.c
-libyywrap.o: libyywrap.c
-main.o: main.c flexdef.h flexint.h version.h options.h scanopt.h \
- tables.h tables_shared.h
-misc.o: misc.c flexdef.h flexint.h tables.h tables_shared.h
-nfa.o: nfa.c flexdef.h flexint.h
-options.o: options.c options.h scanopt.h flexdef.h flexint.h
-parse.o: parse.c flexdef.h flexint.h tables.h tables_shared.h
-scan.o: scan.c flexdef.h flexint.h parse.h
-scanopt.o: scanopt.c flexdef.h flexint.h scanopt.h
-skel.o: skel.c flexdef.h flexint.h
-sym.o: sym.c flexdef.h flexint.h
-tables.o: tables.c flexdef.h flexint.h tables.h tables_shared.h
-tables_shared.o: tables_shared.c flexdef.h flexint.h tables.h \
- tables_shared.h
-tblcmp.o: tblcmp.c flexdef.h flexint.h
-yylex.o: yylex.c flexdef.h flexint.h parse.h
-filter.o: filter.c flexdef.h flexint.h
-
-indent:
-	if [ -f .indent.pro ] ; then \
-	for f in $(indentfiles);\
-	do\
-		echo indenting $$f ;\
-		$(indent) < $$f >/dev/null && indent $$f || echo $$f FAILED to indent ;\
-	done \
-	fi
+@CROSS_TRUE@$(stage1flex_OBJECTS): CC=$(CC_FOR_BUILD)
+@CROSS_TRUE@$(stage1flex_OBJECTS): CFLAGS=$(CFLAGS_FOR_BUILD)
+@CROSS_TRUE@$(stage1flex_OBJECTS): CPP=$(CPP_FOR_BUILD)
+@CROSS_TRUE@$(stage1flex_OBJECTS): CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+@CROSS_TRUE@$(stage1flex_OBJECTS): LDFLAGS=$(LDFLAGS_FOR_BUILD)
+
+skel.c: flex.skl mkskel.sh flexint.h tables_shared.h tables_shared.c
+	$(SHELL) $(srcdir)/mkskel.sh $(srcdir) $(m4) $(VERSION) > $@.tmp
+	mv $@.tmp $@
+
+@ENABLE_BOOTSTRAP_TRUE@stage1scan.c: scan.l stage1flex$(EXEEXT)
+@ENABLE_BOOTSTRAP_TRUE@	./stage1flex$(EXEEXT) $(AM_LFLAGS) $(LFLAGS) -o $@ $(srcdir)/scan.l
+@ENABLE_BOOTSTRAP_FALSE@stage1scan.c: scan.c
+@ENABLE_BOOTSTRAP_FALSE@	sed 's|^\(#line .*\)"'`printf %s $< | sed 's|[][\\\\.*]|\\\\&|g'`'"|\1"$@"|g' $< > $@
+
+dist-hook: scan.l flex$(EXEEXT)
+	chmod u+w $(distdir)/scan.c && \
+	./flex$(EXEEXT) -o scan.c $< && \
+	mv scan.c $(distdir)
+
+# make needs to be told to make parse.h so that parallelized runs will
+# not fail.
+
+stage1flex-main.$(OBJEXT): parse.h
+flex-main.$(OBJEXT): parse.h
+
+stage1flex-yylex.$(OBJEXT): parse.h
+flex-yylex.$(OBJEXT): parse.h
+
+stage1flex-scan.$(OBJEXT): parse.h
+flex-stage1scan.$(OBJEXT): parse.h
+
+indent: $(top_srcdir)/.indent.pro
+	cd $(top_srcdir) && \
+	for f in $(indentfiles); do \
+		f=src/$$f; \
+		echo indenting $$f; \
+		INDENT_PROFILE=.indent.pro $(INDENT) <$$f >/dev/null && \
+		INDENT_PROFILE=.indent.pro $(INDENT) $$f || \
+		echo $$f FAILED to indent; \
+	done;
+
+.PHONY: indent
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/src/buf.c b/src/buf.c
index c03b85f..185083c 100644
--- a/src/buf.c
+++ b/src/buf.c
@@ -100,7 +100,7 @@ struct Buf *buf_linedir (struct Buf *buf, const char* filename, int lineno)
 
     tsz = strlen("#line \"\"\n")                +   /* constant parts */
                2 * strlen (filename)            +   /* filename with possibly all backslashes escaped */
-               (int) (1 + log10 (abs (lineno))) +   /* line number */
+               (size_t) (1 + ceil (log10 (abs (lineno)))) +   /* line number */
                1;                                   /* NUL */
     t = malloc(tsz);
     if (!t)
@@ -166,7 +166,7 @@ struct Buf *buf_strdefine (struct Buf *buf, const char *str, const char *def)
  */
 struct Buf *buf_m4_define (struct Buf *buf, const char* def, const char* val)
 {
-    const char * fmt = "m4_define( [[%s]], [[%s]])m4_dnl\n";
+    const char * fmt = "m4_define( [[%s]], [[[[%s]]]])m4_dnl\n";
     char * str;
     size_t strsz;
 
@@ -241,26 +241,26 @@ struct Buf *buf_append (struct Buf *buf, const void *ptr, int n_elem)
 		n_alloc = n_elem + buf->nelts;
 
 		/* ...plus some extra */
-		if (((n_alloc * buf->elt_size) % 512) != 0
+		if ((((size_t) n_alloc * buf->elt_size) % 512) != 0
 		    && buf->elt_size < 512)
-			n_alloc +=
-				(512 -
-				 ((n_alloc * buf->elt_size) % 512)) /
-				buf->elt_size;
+			n_alloc += (int)
+				((512 -
+				 (((size_t) n_alloc * buf->elt_size) % 512)) /
+				buf->elt_size);
 
 		if (!buf->elts)
 			buf->elts =
-				allocate_array (n_alloc, buf->elt_size);
+				allocate_array ((int) n_alloc, buf->elt_size);
 		else
 			buf->elts =
-				reallocate_array (buf->elts, n_alloc,
+				reallocate_array (buf->elts, (int) n_alloc,
 						  buf->elt_size);
 
 		buf->nmax = n_alloc;
 	}
 
-	memcpy ((char *) buf->elts + buf->nelts * buf->elt_size, ptr,
-		n_elem * buf->elt_size);
+	memcpy ((char *) buf->elts + (size_t) buf->nelts * buf->elt_size, ptr,
+		(size_t) n_elem * buf->elt_size);
 	buf->nelts += n_elem;
 
 	return buf;
diff --git a/src/dfa.c b/src/dfa.c
index be62da8..ab10314 100644
--- a/src/dfa.c
+++ b/src/dfa.c
@@ -463,14 +463,9 @@ void ntod (void)
 			/* We still may want to use the table if numecs
 			 * is a power of 2.
 			 */
-			int     power_of_two;
-
-			for (power_of_two = 1; power_of_two <= csize;
-			     power_of_two *= 2)
-				if (numecs == power_of_two) {
-					use_NUL_table = true;
-					break;
-				}
+			if (numecs <= csize && is_power_of_2(numecs)) {
+				use_NUL_table = true;
+			}
 		}
 
 		if (use_NUL_table)
@@ -515,7 +510,7 @@ void ntod (void)
      
 		yytbl_data_init (yynxt_tbl, YYTD_ID_NXT);
 		yynxt_tbl->td_hilen = 1;
-		yynxt_tbl->td_lolen = num_full_table_rows;
+		yynxt_tbl->td_lolen = (flex_uint32_t) num_full_table_rows;
 		yynxt_tbl->td_data = yynxt_data =
 			calloc(yynxt_tbl->td_lolen *
 					    yynxt_tbl->td_hilen,
@@ -531,12 +526,12 @@ void ntod (void)
 		 */
 		if (gentables)
 			out_str_dec
-				("static yyconst %s yy_nxt[][%d] =\n    {\n",
+				("static const %s yy_nxt[][%d] =\n    {\n",
 				 long_align ? "flex_int32_t" : "flex_int16_t",
 				 num_full_table_rows);
 		else {
 			out_dec ("#undef YY_NXT_LOLEN\n#define YY_NXT_LOLEN (%d)\n", num_full_table_rows);
-			out_str ("static yyconst %s *yy_nxt =0;\n",
+			out_str ("static const %s *yy_nxt =0;\n",
 				 long_align ? "flex_int32_t" : "flex_int16_t");
 		}
 
diff --git a/src/ecs.c b/src/ecs.c
index b2afc1f..dc68360 100644
--- a/src/ecs.c
+++ b/src/ecs.c
@@ -56,7 +56,8 @@ void    ccl2ecl (void)
 			cclmec = ecgroup[ich];
 
 			if (cclmec > 0) {
-				ccltbl[cclp + newlen] = cclmec;
+				/* Note: range 1..256 is mapped to 1..255,0 */
+				ccltbl[cclp + newlen] = (unsigned char) cclmec;
 				++newlen;
 			}
 		}
diff --git a/src/filter.c b/src/filter.c
index 1ac199f..71f3635 100644
--- a/src/filter.c
+++ b/src/filter.c
@@ -176,7 +176,7 @@ clearerr(stdin);
 
 			if ((r = chain->filter_func (chain)) == -1)
 				flexfatal (_("filter_func failed"));
-			exit (0);
+			FLEX_EXIT (0);
 		}
 		else {
 			execvp (chain->argv[0],
@@ -185,7 +185,7 @@ clearerr(stdin);
                     chain->argv[0]);
 		}
 
-		exit (1);
+		FLEX_EXIT (1);
 	}
 
 	/* Parent */
@@ -296,7 +296,8 @@ int filter_tee_header (struct filter *chain)
 		fprintf (to_h, "\n");
 
 		/* write a fake line number. It will get fixed by the linedir filter. */
-		fprintf (to_h, "#line 4000 \"M4_YY_OUTFILE_NAME\"\n");
+		if (gen_line_dirs)
+			fprintf (to_h, "#line 4000 \"M4_YY_OUTFILE_NAME\"\n");
 
 		fprintf (to_h, "#undef %sIN_HEADER\n", prefix);
 		fprintf (to_h, "#endif /* %sHEADER_H */\n", prefix);
@@ -323,7 +324,7 @@ int filter_tee_header (struct filter *chain)
 
 	while (wait (0) > 0) ;
 
-	exit (0);
+	FLEX_EXIT (0);
 	return 0;
 }
 
@@ -390,7 +391,7 @@ int filter_fix_linedirs (struct filter *chain)
 				/* Adjust the line directives. */
 				in_gen = true;
 				snprintf (buf, readsz, "#line %d \"%s\"\n",
-					  lineno + 1, filename);
+					  lineno, filename);
 			}
 			else {
 				/* it's a #line directive for code we didn't write */
diff --git a/src/flex.skl b/src/flex.skl
index fc6915a..786c977 100644
--- a/src/flex.skl
+++ b/src/flex.skl
@@ -6,17 +6,18 @@
 %#      pre-compilation stage of flex. Only macros starting
 %#      with `m4preproc_' are processed, and quoting is normal.
 %#
-%#   2. The preprocessed skeleton is translated verbatim into a
-%#      C array, saved as "skel.c" and compiled into the flex binary.
+%#   2. The preprocessed skeleton is translated into a C array, saved
+%#      as "skel.c" and compiled into the flex binary. The %# comment
+%#      lines are removed.
 %#
 %#   3. At runtime, the skeleton is generated and filtered (again)
 %#      through m4. Macros beginning with `m4_' will be processed.
 %#      The quoting is "[[" and "]]" so we don't interfere with
 %#      user code.
-%# 
+%#
 %# All generate macros for the m4 stage contain the text "m4" or "M4"
 %# in them. This is to distinguish them from CPP macros.
-%# The exception to this rule is YY_G, which is an m4 macro, 
+%# The exception to this rule is YY_G, which is an m4 macro,
 %# but it needs to be remain short because it is used everywhere.
 %#
 /* A lexical scanner generated by flex */
@@ -29,7 +30,7 @@ m4_changecom
 m4_changequote
 m4_changequote([[, ]])
 
-%# 
+%#
 %# Lines in this skeleton starting with a "%" character are "control lines"
 %# and affect the generation of the scanner. The possible control codes are
 %# listed and processed in misc.c.
@@ -61,11 +62,17 @@ m4_changequote([[, ]])
 m4_ifelse(M4_YY_PREFIX,yy,,
 #define yy_create_buffer M4_YY_PREFIX[[_create_buffer]]
 #define yy_delete_buffer M4_YY_PREFIX[[_delete_buffer]]
-#define yy_flex_debug M4_YY_PREFIX[[_flex_debug]]
+#define yy_scan_buffer M4_YY_PREFIX[[_scan_buffer]]
+#define yy_scan_string M4_YY_PREFIX[[_scan_string]]
+#define yy_scan_bytes M4_YY_PREFIX[[_scan_bytes]]
 #define yy_init_buffer M4_YY_PREFIX[[_init_buffer]]
 #define yy_flush_buffer M4_YY_PREFIX[[_flush_buffer]]
 #define yy_load_buffer_state M4_YY_PREFIX[[_load_buffer_state]]
 #define yy_switch_to_buffer M4_YY_PREFIX[[_switch_to_buffer]]
+#define yypush_buffer_state M4_YY_PREFIX[[push_buffer_state]]
+#define yypop_buffer_state M4_YY_PREFIX[[pop_buffer_state]]
+#define yyensure_buffer_stack M4_YY_PREFIX[[ensure_buffer_stack]]
+#define yy_flex_debug M4_YY_PREFIX[[_flex_debug]]
 #define yyin M4_YY_PREFIX[[in]]
 #define yyleng M4_YY_PREFIX[[leng]]
 #define yylex M4_YY_PREFIX[[lex]]
@@ -105,8 +112,16 @@ m4_ifdef( [[M4_YY_REENTRANT]],  [[m4_define([[M4_YY_HAS_START_STACK_VARS]])]])
 
 m4_ifdef( [[M4_YY_PREFIX]],, [[m4_define([[M4_YY_PREFIX]], [[yy]])]])
 
-m4preproc_define(`M4_GEN_PREFIX',
-    ``m4_define(yy[[$1]], [[M4_YY_PREFIX[[$1]]m4_ifelse($'`#,0,,[[($'`@)]])]])'')
+m4preproc_define(`M4_GEN_PREFIX',``
+[[#ifdef yy$1
+#define ]]M4_YY_PREFIX[[$1_ALREADY_DEFINED
+#else
+#define yy$1 ]]M4_YY_PREFIX[[$1
+#endif]]
+'m4preproc_divert(1)`
+[[#ifndef ]]M4_YY_PREFIX[[$1_ALREADY_DEFINED
+#undef yy$1
+#endif]]'m4preproc_divert(0)')
 
 %if-c++-only
     /* The c++ scanner is a mess. The FlexLexer.h header file relies on the
@@ -119,6 +134,7 @@ m4preproc_define(`M4_GEN_PREFIX',
 %endif
 
 %if-c-only
+m4_ifelse(M4_YY_PREFIX,yy,,
     M4_GEN_PREFIX(`_create_buffer')
     M4_GEN_PREFIX(`_delete_buffer')
     M4_GEN_PREFIX(`_scan_buffer')
@@ -154,6 +170,7 @@ m4preproc_define(`M4_GEN_PREFIX',
         M4_GEN_PREFIX(`set_column')
     ]])
     M4_GEN_PREFIX(`wrap')
+)
 %endif
 
 m4_ifdef( [[M4_YY_BISON_LVAL]],
@@ -169,11 +186,14 @@ m4_ifdef( [[<M4_YY_BISON_LLOC>]],
 ]])
 
 
+m4_ifelse(M4_YY_PREFIX,yy,,
     M4_GEN_PREFIX(`alloc')
     M4_GEN_PREFIX(`realloc')
     M4_GEN_PREFIX(`free')
+)
 
 %if-c-only
+m4_ifelse(M4_YY_PREFIX,yy,,
 m4_ifdef( [[M4_YY_NOT_REENTRANT]],
 [[
     M4_GEN_PREFIX(`text')
@@ -183,6 +203,7 @@ m4_ifdef( [[M4_YY_NOT_REENTRANT]],
     M4_GEN_PREFIX(`_flex_debug')
     M4_GEN_PREFIX(`lineno')
 ]])
+)
 %endif
 
 
@@ -213,9 +234,9 @@ m4_ifdef( [[M4_YY_TABLES_EXTERNAL]],
 m4preproc_include(`flexint.h')
 %endif
 
-%if-c++-only
 /* begin standard C++ headers. */
-#include <iostream> 
+%if-c++-only
+#include <iostream>
 #include <errno.h>
 #include <cstdlib>
 #include <cstdio>
@@ -232,37 +253,16 @@ m4preproc_include(`flexint.h')
 #define yynoreturn
 #endif
 
-%# For compilers that can not handle prototypes.
-%# e.g.,
-%# The function prototype
-%#    int foo(int x, char* y);
-%# 
-%# ...should be written as
-%#    int foo M4_YY_PARAMS(int x, char* y);
-%# 
-%# ...which could possibly generate
-%#    int foo ();
-%# 
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_PROTOS]],
-[[
-    m4_define( [[M4_YY_PARAMS]], [[()]])
-]],
-[[
-    m4_define( [[M4_YY_PARAMS]], [[($*)]])
-]])
-
 %not-for-header
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 %ok-for-header
 
 %not-for-header
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 %ok-for-header
 
 
@@ -286,16 +286,8 @@ m4_define( [[YY_G]], [[yyg->$1]])
 m4_define( [[M4_YY_PROTO_LAST_ARG]],  [[, yyscan_t yyscanner]])
 m4_define( [[M4_YY_PROTO_ONLY_ARG]],  [[yyscan_t yyscanner]])
 
-%# For use in function definitions to append the additional argument.
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_DEFS]],
-[[
-    m4_define( [[M4_YY_DEF_LAST_ARG]], [[, yyscanner]])
-    m4_define( [[M4_YY_DEF_ONLY_ARG]], [[yyscanner]])
-]],
-[[
-    m4_define( [[M4_YY_DEF_LAST_ARG]],  [[, yyscan_t yyscanner]])
-    m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[yyscan_t yyscanner]])
-]])
+m4_define( [[M4_YY_DEF_LAST_ARG]],  [[, yyscan_t yyscanner]])
+m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[yyscan_t yyscanner]])
 m4_define( [[M4_YY_DECL_LAST_ARG]],  [[yyscan_t yyscanner;]])
 
 %# For use in function calls to pass the additional argument.
@@ -317,7 +309,7 @@ m4_define( [[M4_YY_DOC_PARAM]], [[@param yyscanner The scanner object.]])
 #define yy_flex_debug YY_G(yy_flex_debug_r)
 
 m4_define( [[M4_YY_INCR_LINENO]],
-[[   
+[[
     do{ yylineno++;
         yycolumn=0;
     }while(0)
@@ -330,7 +322,7 @@ m4_define( [[M4_YY_INCR_LINENO]],
 %if-not-reentrant
 
 m4_define( [[M4_YY_INCR_LINENO]],
-[[   
+[[
     yylineno++;
 ]])
 
@@ -342,60 +334,19 @@ m4_define( [[M4_YY_PROTO_LAST_ARG]])
 m4_define( [[M4_YY_PROTO_ONLY_ARG]],  [[void]])
 m4_define( [[M4_YY_DEF_LAST_ARG]])
 
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_DEFS]],
-[[
-    m4_define( [[M4_YY_DEF_ONLY_ARG]])
-]],
-[[
-    m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[void]])
-]])
+m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[void]])
 m4_define([[M4_YY_DECL_LAST_ARG]])
 m4_define([[M4_YY_CALL_LAST_ARG]])
 m4_define([[M4_YY_CALL_ONLY_ARG]])
-m4_define( [[M4_YY_DOC_PARAM]], [[]])
+m4_define( [[M4_YY_DOC_PARAM]], )
 
 %endif
 
 
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_DEFS]],
-[[
-%# For compilers that need traditional function definitions.
-%# e.g.,
-%# The function prototype taking 2 arguments
-%#    int foo (int x, char* y)
-%#
-%# ...should be written as
-%#    int foo YYFARGS2(int,x, char*,y)
-%#
-%# ...which could possibly generate
-%#    int foo (x,y,yyscanner)
-%#        int x;
-%#        char * y;
-%#        yyscan_t yyscanner;
-%#
-%# Generate traditional function defs
-    m4_define( [[YYFARGS0]], [[(M4_YY_DEF_ONLY_ARG) [[\]]
-        M4_YY_DECL_LAST_ARG]])
-    m4_define( [[YYFARGS1]], [[($2 M4_YY_DEF_LAST_ARG) [[\]]
-        $1 $2; [[\]]
-        M4_YY_DECL_LAST_ARG]])
-    m4_define( [[YYFARGS2]], [[($2,$4 M4_YY_DEF_LAST_ARG) [[\]]
-        $1 $2; [[\]]
-        $3 $4; [[\]]
-        M4_YY_DECL_LAST_ARG]])
-    m4_define( [[YYFARGS3]], [[($2,$4,$6 M4_YY_DEF_LAST_ARG) [[\]]
-        $1 $2; [[\]]
-        $3 $4; [[\]]
-        $5 $6; [[\]]
-        M4_YY_DECL_LAST_ARG]])
-]],
-[[
 %# Generate C99 function defs.
-    m4_define( [[YYFARGS0]], [[(M4_YY_DEF_ONLY_ARG)]])
-    m4_define( [[YYFARGS1]], [[($1 $2 M4_YY_DEF_LAST_ARG)]])
-    m4_define( [[YYFARGS2]], [[($1 $2, $3 $4 M4_YY_DEF_LAST_ARG)]])
-    m4_define( [[YYFARGS3]], [[($1 $2, $3 $4, $5 $6 M4_YY_DEF_LAST_ARG)]])
-]])
+m4_define( [[YYFARGS1]], [[($1 $2 M4_YY_DEF_LAST_ARG)]])
+m4_define( [[YYFARGS2]], [[($1 $2, $3 $4 M4_YY_DEF_LAST_ARG)]])
+m4_define( [[YYFARGS3]], [[($1 $2, $3 $4, $5 $6 M4_YY_DEF_LAST_ARG)]])
 
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
@@ -404,32 +355,16 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
  * definition of BEGIN.
  */
 #define BEGIN YY_G(yy_start) = 1 + 2 *
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((YY_G(yy_start) - 1) / 2)
 #define YYSTATE YY_START
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 /* Special action meaning "start processing a new file". */
 #define YY_NEW_FILE yyrestart( yyin M4_YY_CALL_LAST_ARG )
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 #define YY_END_OF_BUFFER_CHAR 0
 ]])
 
@@ -479,15 +414,11 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 #define EOB_ACT_CONTINUE_SCAN 0
 #define EOB_ACT_END_OF_FILE 1
 #define EOB_ACT_LAST_MATCH 2
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
     m4_ifdef( [[M4_YY_USE_LINENO]],
     [[
     /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
      *       access to the local variable yy_act. Since yyless() is a macro, it would break
-     *       existing scanners that call yyless() from OUTSIDE yylex. 
+     *       existing scanners that call yyless() from OUTSIDE yylex.
      *       One obvious solution it to make yy_act a global. I tried that, and saw
      *       a 5% performance hit in a non-yylineno scanner, because yy_act is
      *       normally declared as a register variable-- so it is not worth it.
@@ -511,10 +442,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
     #define YY_LESS_LINENO(n)
     #define YY_LINENO_REWIND_TO(ptr)
     ]])
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 /* Return all but the first "n" matched characters back to the input stream. */
 #define yyless(n) \
 	do \
@@ -528,10 +455,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 #define unput(c) yyunput( c, YY_G(yytext_ptr) M4_YY_CALL_LAST_ARG )
 ]])
 
@@ -544,7 +467,7 @@ struct yy_buffer_state
 %endif
 
 %if-c++-only
-	std::streambuf* yy_input_file; 
+	std::streambuf* yy_input_file;
 %endif
 
 
@@ -582,7 +505,7 @@ struct yy_buffer_state
 
     int yy_bs_lineno; /**< The line count. */
     int yy_bs_column; /**< The column count. */
-    
+
 
 	/* Whether to try to fill the input buffer when we reach the
 	 * end of it.
@@ -632,10 +555,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 #define YY_CURRENT_BUFFER ( YY_G(yy_buffer_stack) \
                           ? YY_G(yy_buffer_stack)[YY_G(yy_buffer_stack_top)] \
                           : NULL)
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
@@ -663,43 +582,35 @@ static int yy_did_buffer_switch_on_eof;
 %ok-for-header
 %endif
 
-void yyrestart M4_YY_PARAMS( FILE *input_file M4_YY_PROTO_LAST_ARG );
-void yy_switch_to_buffer M4_YY_PARAMS( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
-YY_BUFFER_STATE yy_create_buffer M4_YY_PARAMS( FILE *file, int size M4_YY_PROTO_LAST_ARG );
-void yy_delete_buffer M4_YY_PARAMS( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
-void yy_flush_buffer M4_YY_PARAMS( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
-void yypush_buffer_state M4_YY_PARAMS( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
-void yypop_buffer_state M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
-static void yyensure_buffer_stack M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
-static void yy_load_buffer_state M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
-static void yy_init_buffer M4_YY_PARAMS( YY_BUFFER_STATE b, FILE *file M4_YY_PROTO_LAST_ARG );
-]])
+void yyrestart ( FILE *input_file M4_YY_PROTO_LAST_ARG );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size M4_YY_PROTO_LAST_ARG );
+void yy_delete_buffer ( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
+void yy_flush_buffer ( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
+void yypop_buffer_state ( M4_YY_PROTO_ONLY_ARG );
 
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
+static void yyensure_buffer_stack ( M4_YY_PROTO_ONLY_ARG );
+static void yy_load_buffer_state ( M4_YY_PROTO_ONLY_ARG );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file M4_YY_PROTO_LAST_ARG );
 #define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG)
 ]])
 
-YY_BUFFER_STATE yy_scan_buffer M4_YY_PARAMS( char *base, yy_size_t size M4_YY_PROTO_LAST_ARG );
-YY_BUFFER_STATE yy_scan_string M4_YY_PARAMS( yyconst char *yy_str M4_YY_PROTO_LAST_ARG );
-YY_BUFFER_STATE yy_scan_bytes M4_YY_PARAMS( yyconst char *bytes, int len M4_YY_PROTO_LAST_ARG );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size M4_YY_PROTO_LAST_ARG );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str M4_YY_PROTO_LAST_ARG );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len M4_YY_PROTO_LAST_ARG );
 
 %endif
 
-void *yyalloc M4_YY_PARAMS( yy_size_t M4_YY_PROTO_LAST_ARG );
-void *yyrealloc M4_YY_PARAMS( void *, yy_size_t M4_YY_PROTO_LAST_ARG );
-void yyfree M4_YY_PARAMS( void * M4_YY_PROTO_LAST_ARG );
+void *yyalloc ( yy_size_t M4_YY_PROTO_LAST_ARG );
+void *yyrealloc ( void *, yy_size_t M4_YY_PROTO_LAST_ARG );
+void yyfree ( void * M4_YY_PROTO_LAST_ARG );
 
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
 #define yy_new_buffer yy_create_buffer
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
@@ -709,10 +620,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
@@ -722,10 +629,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 ]])
 
@@ -740,10 +643,10 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
-static yy_state_type yy_get_previous_state M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
-static yy_state_type yy_try_NUL_trans M4_YY_PARAMS( yy_state_type current_state  M4_YY_PROTO_LAST_ARG);
-static int yy_get_next_buffer M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
-static void yynoreturn yy_fatal_error M4_YY_PARAMS( yyconst char* msg M4_YY_PROTO_LAST_ARG );
+static yy_state_type yy_get_previous_state ( M4_YY_PROTO_ONLY_ARG );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  M4_YY_PROTO_LAST_ARG);
+static int yy_get_next_buffer ( M4_YY_PROTO_ONLY_ARG );
+static void yynoreturn yy_fatal_error ( const char* msg M4_YY_PROTO_LAST_ARG );
 ]])
 
 %endif
@@ -760,10 +663,6 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 	*yy_cp = '\0'; \
 %% [3.0] code to copy yytext_ptr to yytext[] goes here, if %array \
 	YY_G(yy_c_buf_p) = yy_cp;
-]])
-
-m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
-[[
 %% [4.0] data tables for the DFA and the user's section 1 definitions go here
 ]])
 
@@ -875,7 +774,7 @@ m4_ifdef( [[<M4_YY_BISON_LLOC>]],
 %if-c-only
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
-static int yy_init_globals M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+static int yy_init_globals ( M4_YY_PROTO_ONLY_ARG );
 ]])
 %endif
 
@@ -896,9 +795,9 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
     ]])
 ]])
 
-int yylex_init M4_YY_PARAMS(yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int yylex_init_extra M4_YY_PARAMS( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 %endif
 
@@ -909,74 +808,74 @@ int yylex_init_extra M4_YY_PARAMS( YY_EXTRA_TYPE user_defined, yyscan_t* scanner
 
 m4_ifdef( [[M4_YY_NO_DESTROY]],,
 [[
-int yylex_destroy M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+int yylex_destroy ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_DEBUG]],,
 [[
-int yyget_debug M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+int yyget_debug ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_SET_DEBUG]],,
 [[
-void yyset_debug M4_YY_PARAMS( int debug_flag M4_YY_PROTO_LAST_ARG );
+void yyset_debug ( int debug_flag M4_YY_PROTO_LAST_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_EXTRA]],,
 [[
-YY_EXTRA_TYPE yyget_extra M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+YY_EXTRA_TYPE yyget_extra ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_SET_EXTRA]],,
 [[
-void yyset_extra M4_YY_PARAMS( YY_EXTRA_TYPE user_defined M4_YY_PROTO_LAST_ARG );
+void yyset_extra ( YY_EXTRA_TYPE user_defined M4_YY_PROTO_LAST_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_IN]],,
 [[
-FILE *yyget_in M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+FILE *yyget_in ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_SET_IN]],,
 [[
-void yyset_in  M4_YY_PARAMS( FILE * _in_str M4_YY_PROTO_LAST_ARG );
+void yyset_in  ( FILE * _in_str M4_YY_PROTO_LAST_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_OUT]],,
 [[
-FILE *yyget_out M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+FILE *yyget_out ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_SET_OUT]],,
 [[
-void yyset_out  M4_YY_PARAMS( FILE * _out_str M4_YY_PROTO_LAST_ARG );
+void yyset_out  ( FILE * _out_str M4_YY_PROTO_LAST_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_LENG]],,
 [[
-			int yyget_leng M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+			int yyget_leng ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_TEXT]],,
 [[
-char *yyget_text M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+char *yyget_text ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_GET_LINENO]],,
 [[
-int yyget_lineno M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+int yyget_lineno ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_NO_SET_LINENO]],,
 [[
-void yyset_lineno M4_YY_PARAMS( int _line_number M4_YY_PROTO_LAST_ARG );
+void yyset_lineno ( int _line_number M4_YY_PROTO_LAST_ARG );
 ]])
 
 m4_ifdef( [[M4_YY_REENTRANT]],
 [[
 m4_ifdef( [[M4_YY_NO_GET_COLUMN]],,
 [[
-int yyget_column  M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+int yyget_column  ( M4_YY_PROTO_ONLY_ARG );
 ]])
 ]])
 
@@ -984,28 +883,28 @@ m4_ifdef( [[M4_YY_REENTRANT]],
 [[
 m4_ifdef( [[M4_YY_NO_SET_COLUMN]],,
 [[
-void yyset_column M4_YY_PARAMS( int _column_no M4_YY_PROTO_LAST_ARG );
+void yyset_column ( int _column_no M4_YY_PROTO_LAST_ARG );
 ]])
 ]])
 
 %if-bison-bridge
 m4_ifdef( [[M4_YY_NO_GET_LVAL]],,
 [[
-YYSTYPE * yyget_lval M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+YYSTYPE * yyget_lval ( M4_YY_PROTO_ONLY_ARG );
 ]])
 
-void yyset_lval M4_YY_PARAMS( YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG );
+void yyset_lval ( YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG );
 
 m4_ifdef( [[<M4_YY_BISON_LLOC>]],
 [[
     m4_ifdef( [[M4_YY_NO_GET_LLOC]],,
     [[
-       YYLTYPE *yyget_lloc M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+       YYLTYPE *yyget_lloc ( M4_YY_PROTO_ONLY_ARG );
     ]])
 
     m4_ifdef( [[M4_YY_NO_SET_LLOC]],,
     [[
-        void yyset_lloc M4_YY_PARAMS( YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG );
+        void yyset_lloc ( YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG );
     ]])
 ]])
 %endif
@@ -1016,9 +915,9 @@ m4_ifdef( [[<M4_YY_BISON_LLOC>]],
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int yywrap M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+extern "C" int yywrap ( M4_YY_PROTO_ONLY_ARG );
 #else
-extern int yywrap M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+extern int yywrap ( M4_YY_PROTO_ONLY_ARG );
 #endif
 #endif
 
@@ -1026,27 +925,27 @@ extern int yywrap M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
 #ifndef YY_NO_UNPUT
     m4_ifdef( [[M4_YY_NO_UNPUT]],,
     [[
-    static void yyunput M4_YY_PARAMS( int c, char *buf_ptr  M4_YY_PROTO_LAST_ARG);
+    static void yyunput ( int c, char *buf_ptr  M4_YY_PROTO_LAST_ARG);
     ]])
 #endif
 %ok-for-header
 %endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy M4_YY_PARAMS( char *, yyconst char *, int M4_YY_PROTO_LAST_ARG);
+static void yy_flex_strncpy ( char *, const char *, int M4_YY_PROTO_LAST_ARG);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen M4_YY_PARAMS( yyconst char * M4_YY_PROTO_LAST_ARG);
+static int yy_flex_strlen ( const char * M4_YY_PROTO_LAST_ARG);
 #endif
 
 #ifndef YY_NO_INPUT
 %if-c-only Standard (non-C++) definition
 %not-for-header
 #ifdef __cplusplus
-static int yyinput M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+static int yyinput ( M4_YY_PROTO_ONLY_ARG );
 #else
-static int input M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+static int input ( M4_YY_PROTO_ONLY_ARG );
 #endif
 %ok-for-header
 %endif
@@ -1072,15 +971,15 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
     m4_ifdef( [[M4_YY_NO_PUSH_STATE]],,
     [[
-    static void yy_push_state M4_YY_PARAMS( int _new_state M4_YY_PROTO_LAST_ARG);
+    static void yy_push_state ( int _new_state M4_YY_PROTO_LAST_ARG);
     ]])
     m4_ifdef( [[M4_YY_NO_POP_STATE]],,
     [[
-    static void yy_pop_state M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+    static void yy_pop_state ( M4_YY_PROTO_ONLY_ARG );
     ]])
     m4_ifdef( [[M4_YY_NO_TOP_STATE]],,
     [[
-    static int yy_top_state M4_YY_PARAMS( M4_YY_PROTO_ONLY_ARG );
+    static int yy_top_state ( M4_YY_PROTO_ONLY_ARG );
     ]])
 ]])
 
@@ -1168,15 +1067,15 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 m4preproc_include(`tables_shared.h')
 
 /* Load the DFA tables from the given stream.  */
-int yytables_fload M4_YY_PARAMS(FILE * fp M4_YY_PROTO_LAST_ARG);
+int yytables_fload (FILE * fp M4_YY_PROTO_LAST_ARG);
 
 /* Unload the tables from memory. */
-int yytables_destroy M4_YY_PARAMS(M4_YY_PROTO_ONLY_ARG);
+int yytables_destroy (M4_YY_PROTO_ONLY_ARG);
 %not-for-header
 
 /** Describes a mapping from a serialized table id to its deserialized state in
  * this scanner.  This is the bridge between our "generic" deserialization code
- * and the specifics of this scanner. 
+ * and the specifics of this scanner.
  */
 struct yytbl_dmap {
 	enum yytbl_id dm_id;/**< table identifier */
@@ -1210,8 +1109,8 @@ struct yytbl_reader {
 %if-c-only Standard (non-C++) definition
 
 
-m4_define( [[M4_YY_LEX_PROTO]], [[M4_YY_PARAMS(M4_YY_PROTO_ONLY_ARG)]])
-m4_define( [[M4_YY_LEX_DECLARATION]], [[YYFARGS0(void)]])
+m4_define( [[M4_YY_LEX_PROTO]], [[(M4_YY_PROTO_ONLY_ARG)]])
+m4_define( [[M4_YY_LEX_DECLARATION]], [[(M4_YY_DEF_ONLY_ARG)]])
 
 m4_ifdef( [[M4_YY_BISON_LVAL]],
 [[
@@ -1219,7 +1118,7 @@ m4_ifdef( [[M4_YY_BISON_LVAL]],
     m4_dnl  accept the lval parameter.
 
     m4_define( [[M4_YY_LEX_PROTO]], [[\]]
-               [[M4_YY_PARAMS(YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG)]])
+               [[(YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG)]])
     m4_define( [[M4_YY_LEX_DECLARATION]], [[\]]
                [[YYFARGS1(YYSTYPE *,yylval_param)]])
 ]])
@@ -1229,7 +1128,7 @@ m4_ifdef( [[<M4_YY_BISON_LLOC>]],
     m4_dnl  Locations are used. yylex should also accept the ylloc parameter.
 
     m4_define( [[M4_YY_LEX_PROTO]], [[\]]
-               [[M4_YY_PARAMS(YYSTYPE * yylval_param, YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG)]])
+               [[(YYSTYPE * yylval_param, YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG)]])
     m4_define( [[M4_YY_LEX_DECLARATION]], [[\]]
                [[YYFARGS2(YYSTYPE *,yylval_param, YYLTYPE *,yylloc_param)]])
 ]])
@@ -1652,7 +1551,7 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
  *	EOB_ACT_END_OF_FILE - end of file
  */
 %if-c-only
-static int yy_get_next_buffer YYFARGS0(void)
+static int yy_get_next_buffer (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
 int yyFlexLexer::yy_get_next_buffer()
@@ -1661,7 +1560,7 @@ int yyFlexLexer::yy_get_next_buffer()
     M4_YY_DECL_GUTS_VAR();
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = YY_G(yytext_ptr);
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( YY_G(yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[YY_G(yy_n_chars) + 1] )
@@ -1690,7 +1589,7 @@ int yyFlexLexer::yy_get_next_buffer()
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (YY_G(yy_c_buf_p) - YY_G(yytext_ptr)) - 1;
+	number_to_move = (int) (YY_G(yy_c_buf_p) - YY_G(yytext_ptr) - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1732,7 +1631,7 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
 					yyrealloc( (void *) b->yy_ch_buf,
-							 b->yy_buf_size + 2 M4_YY_CALL_LAST_ARG );
+							 (yy_size_t) (b->yy_buf_size + 2) M4_YY_CALL_LAST_ARG );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1778,13 +1677,15 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (YY_G(yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((YY_G(yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = YY_G(yy_n_chars) + number_to_move + (YY_G(yy_n_chars) >> 1);
 		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
-			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, new_size M4_YY_CALL_LAST_ARG );
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size M4_YY_CALL_LAST_ARG );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	YY_G(yy_n_chars) += number_to_move;
@@ -1801,7 +1702,7 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
 
 %if-c-only
 %not-for-header
-    static yy_state_type yy_get_previous_state YYFARGS0(void)
+    static yy_state_type yy_get_previous_state (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
     yy_state_type yyFlexLexer::yy_get_previous_state()
@@ -1904,9 +1805,9 @@ m4_ifdef( [[M4_YY_USE_LINENO]],
 %if-c-only
 #ifndef YY_NO_INPUT
 #ifdef __cplusplus
-    static int yyinput YYFARGS0(void)
+    static int yyinput (M4_YY_DEF_ONLY_ARG)
 #else
-    static int input  YYFARGS0(void)
+    static int input  (M4_YY_DEF_ONLY_ARG)
 #endif
 
 %endif
@@ -1931,7 +1832,7 @@ m4_ifdef( [[M4_YY_USE_LINENO]],
 
 		else
 			{ /* need more input */
-			int offset = YY_G(yy_c_buf_p) - YY_G(yytext_ptr);
+			int offset = (int) (YY_G(yy_c_buf_p) - YY_G(yytext_ptr));
 			++YY_G(yy_c_buf_p);
 
 			switch ( yy_get_next_buffer( M4_YY_CALL_ONLY_ARG ) )
@@ -2017,6 +1918,9 @@ m4_ifdef( [[M4_YY_USE_LINENO]],
  */
 void yyFlexLexer::yyrestart( std::istream* input_file )
 {
+	if( ! input_file ) {
+		input_file = &yyin;
+	}
 	yyrestart( *input_file );
 }
 %endif
@@ -2064,7 +1968,7 @@ void yyFlexLexer::yyrestart( std::istream* input_file )
 
 
 %if-c-only
-static void yy_load_buffer_state  YYFARGS0(void)
+static void yy_load_buffer_state  (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
     void yyFlexLexer::yy_load_buffer_state()
@@ -2102,12 +2006,12 @@ static void yy_load_buffer_state  YYFARGS0(void)
 	if ( ! b )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) yyalloc( b->yy_buf_size + 2 M4_YY_CALL_LAST_ARG );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) M4_YY_CALL_LAST_ARG );
 	if ( ! b->yy_ch_buf )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
@@ -2292,7 +2196,7 @@ void yyFlexLexer::yypush_buffer_state (YY_BUFFER_STATE new_buffer)
  *  M4_YY_DOC_PARAM
  */
 %if-c-only
-void yypop_buffer_state YYFARGS0(void)
+void yypop_buffer_state (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
 void yyFlexLexer::yypop_buffer_state (void)
@@ -2320,13 +2224,13 @@ void yyFlexLexer::yypop_buffer_state (void)
  *  Guarantees space for at least one push.
  */
 %if-c-only
-static void yyensure_buffer_stack YYFARGS0(void)
+static void yyensure_buffer_stack (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
 void yyFlexLexer::yyensure_buffer_stack(void)
 %endif
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     M4_YY_DECL_GUTS_VAR();
 
 	if (!YY_G(yy_buffer_stack)) {
@@ -2341,10 +2245,10 @@ void yyFlexLexer::yyensure_buffer_stack(void)
 								M4_YY_CALL_LAST_ARG);
 		if ( ! YY_G(yy_buffer_stack) )
 			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
-								  
-		
+
+
 		memset(YY_G(yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
-				
+
 		YY_G(yy_buffer_stack_max) = num_to_alloc;
 		YY_G(yy_buffer_stack_top) = 0;
 		return;
@@ -2380,7 +2284,7 @@ m4_ifdef( [[M4_YY_NO_SCAN_BUFFER]],,
  * @param base the character buffer
  * @param size the size in bytes of the character buffer
  * M4_YY_DOC_PARAM
- * @return the newly allocated buffer state object. 
+ * @return the newly allocated buffer state object.
  */
 YY_BUFFER_STATE yy_scan_buffer  YYFARGS2( char *,base, yy_size_t ,size)
 {
@@ -2397,7 +2301,7 @@ YY_BUFFER_STATE yy_scan_buffer  YYFARGS2( char *,base, yy_size_t ,size)
 	if ( ! b )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -2426,7 +2330,7 @@ m4_ifdef( [[M4_YY_NO_SCAN_STRING]],,
  * @note If you want to scan bytes that may contain NUL values, then use
  *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE yy_scan_string YYFARGS1( yyconst char *, yystr)
+YY_BUFFER_STATE yy_scan_string YYFARGS1( const char *, yystr)
 {
     m4_dnl M4_YY_DECL_GUTS_VAR();
 
@@ -2446,16 +2350,16 @@ m4_ifdef( [[M4_YY_NO_SCAN_BYTES]],,
  * M4_YY_DOC_PARAM
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE yy_scan_bytes  YYFARGS2( yyconst char *,yybytes, int ,_yybytes_len)
+YY_BUFFER_STATE yy_scan_bytes  YYFARGS2( const char *,yybytes, int ,_yybytes_len)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
     m4_dnl M4_YY_DECL_GUTS_VAR();
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
+	n = (yy_size_t) (_yybytes_len + 2);
 	buf = (char *) yyalloc( n M4_YY_CALL_LAST_ARG );
 	if ( ! buf )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
@@ -2518,7 +2422,7 @@ m4_ifdef( [[M4_YY_NO_PUSH_STATE]],,
 m4_ifdef( [[M4_YY_NO_POP_STATE]],,
 [[
 %if-c-only
-    static void yy_pop_state  YYFARGS0(void)
+    static void yy_pop_state  (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
     void yyFlexLexer::yy_pop_state()
@@ -2536,7 +2440,7 @@ m4_ifdef( [[M4_YY_NO_POP_STATE]],,
 m4_ifdef( [[M4_YY_NO_TOP_STATE]],,
 [[
 %if-c-only
-    static int yy_top_state  YYFARGS0(void)
+    static int yy_top_state  (M4_YY_DEF_ONLY_ARG)
 %endif
 %if-c++-only
     int yyFlexLexer::yy_top_state()
@@ -2552,16 +2456,16 @@ m4_ifdef( [[M4_YY_NO_TOP_STATE]],,
 #endif
 
 %if-c-only
-static void yynoreturn yy_fatal_error YYFARGS1(yyconst char*, msg)
+static void yynoreturn yy_fatal_error YYFARGS1(const char*, msg)
 {
 	M4_YY_DECL_GUTS_VAR();
 	M4_YY_NOOP_GUTS_VAR();
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 %endif
 %if-c++-only
-void yyFlexLexer::LexerError( yyconst char* msg )
+void yyFlexLexer::LexerError( const char* msg )
 {
     M4_YY_DECL_GUTS_VAR();
 	std::cerr << msg << std::endl;
@@ -2597,7 +2501,7 @@ m4_ifdef( [[M4_YY_NO_GET_EXTRA]],,
 /** Get the user-defined data for this scanner.
  * M4_YY_DOC_PARAM
  */
-YY_EXTRA_TYPE yyget_extra  YYFARGS0(void)
+YY_EXTRA_TYPE yyget_extra  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yyextra;
@@ -2610,10 +2514,10 @@ m4_ifdef( [[M4_YY_NO_GET_LINENO]],,
 /** Get the current line number.
  * M4_YY_DOC_PARAM
  */
-int yyget_lineno  YYFARGS0(void)
+int yyget_lineno  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
-    
+
     m4_ifdef( [[M4_YY_REENTRANT]],
     [[
         if (! YY_CURRENT_BUFFER)
@@ -2630,10 +2534,10 @@ m4_ifdef( [[M4_YY_NO_GET_COLUMN]],,
 /** Get the current column number.
  * M4_YY_DOC_PARAM
  */
-int yyget_column  YYFARGS0(void)
+int yyget_column  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
-    
+
     m4_ifdef( [[M4_YY_REENTRANT]],
     [[
         if (! YY_CURRENT_BUFFER)
@@ -2649,7 +2553,7 @@ m4_ifdef( [[M4_YY_NO_GET_IN]],,
 /** Get the input stream.
  * M4_YY_DOC_PARAM
  */
-FILE *yyget_in  YYFARGS0(void)
+FILE *yyget_in  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yyin;
@@ -2661,7 +2565,7 @@ m4_ifdef( [[M4_YY_NO_GET_OUT]],,
 /** Get the output stream.
  * M4_YY_DOC_PARAM
  */
-FILE *yyget_out  YYFARGS0(void)
+FILE *yyget_out  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yyout;
@@ -2673,7 +2577,7 @@ m4_ifdef( [[M4_YY_NO_GET_LENG]],,
 /** Get the length of the current token.
  * M4_YY_DOC_PARAM
  */
-int yyget_leng  YYFARGS0(void)
+int yyget_leng  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yyleng;
@@ -2685,7 +2589,7 @@ int yyget_leng  YYFARGS0(void)
  */
 m4_ifdef( [[M4_YY_NO_GET_TEXT]],,
 [[
-char *yyget_text  YYFARGS0(void)
+char *yyget_text  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yytext;
@@ -2778,7 +2682,7 @@ void yyset_out YYFARGS1( FILE * ,_out_str)
 
 m4_ifdef( [[M4_YY_NO_GET_DEBUG]],,
 [[
-int yyget_debug  YYFARGS0(void)
+int yyget_debug  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yy_flex_debug;
@@ -2801,7 +2705,7 @@ void yyset_debug YYFARGS1( int ,_bdebug)
 %if-bison-bridge
 m4_ifdef( [[M4_YY_NO_GET_LVAL]],,
 [[
-YYSTYPE * yyget_lval  YYFARGS0(void)
+YYSTYPE * yyget_lval  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yylval;
@@ -2821,7 +2725,7 @@ m4_ifdef( [[<M4_YY_BISON_LLOC>]],
 [[
     m4_ifdef( [[M4_YY_NO_GET_LLOC]],,
     [[
-YYLTYPE *yyget_lloc  YYFARGS0(void)
+YYLTYPE *yyget_lloc  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     return yylloc;
@@ -2847,14 +2751,7 @@ void yyset_lloc YYFARGS1( YYLTYPE * ,yylloc_param)
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_DEFS]],
-[[
-int yylex_init( ptr_yy_globals )
-    yyscan_t* ptr_yy_globals;
-]],
-[[
 int yylex_init(yyscan_t* ptr_yy_globals)
-]])
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
@@ -2882,15 +2779,7 @@ int yylex_init(yyscan_t* ptr_yy_globals)
  * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-m4_ifdef( [[M4_YY_NO_ANSI_FUNC_DEFS]],
-[[
-int yylex_init_extra( yy_user_defined, ptr_yy_globals )
-    YY_EXTRA_TYPE yy_user_defined;
-    yyscan_t* ptr_yy_globals;
-]],
-[[
 int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
-]])
 {
     struct yyguts_t dummy_yyguts;
 
@@ -2900,20 +2789,20 @@ int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
         errno = EINVAL;
         return 1;
     }
-	
+
     *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
-	
+
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
         return 1;
     }
-    
+
     /* By setting to 0xAA, we expose bugs in
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
-    
+
     yyset_extra (yy_user_defined, *ptr_yy_globals);
-    
+
     return yy_init_globals ( *ptr_yy_globals );
 }
 
@@ -2921,7 +2810,7 @@ int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 %# Actually, that ended an if-rentrant section
 
 %if-c-only
-static int yy_init_globals YYFARGS0(void)
+static int yy_init_globals (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
     /* Initialization is the same as for the non-reentrant scanner.
@@ -2984,7 +2873,7 @@ m4_ifdef( [[M4_YY_TEXT_IS_ARRAY]],
 
 %if-c-only SNIP! this currently causes conflicts with the c++ scanner
 /* yylex_destroy is for both reentrant and non-reentrant scanners. */
-int yylex_destroy  YYFARGS0(void)
+int yylex_destroy  (M4_YY_DEF_ONLY_ARG)
 {
     M4_YY_DECL_GUTS_VAR();
 
@@ -3036,7 +2925,7 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
 #ifndef yytext_ptr
-static void yy_flex_strncpy YYFARGS3( char*,s1, yyconst char *,s2, int,n)
+static void yy_flex_strncpy YYFARGS3( char*,s1, const char *,s2, int,n)
 {
 	M4_YY_DECL_GUTS_VAR();
 	M4_YY_NOOP_GUTS_VAR();
@@ -3051,7 +2940,7 @@ static void yy_flex_strncpy YYFARGS3( char*,s1, yyconst char *,s2, int,n)
 m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 [[
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen YYFARGS1( yyconst char *,s)
+static int yy_flex_strlen YYFARGS1( const char *,s)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -3110,7 +2999,7 @@ static int yytbl_read8 (void *v, struct yytbl_reader * rd)
         errno = EIO;
         return -1;
     }
-    rd->bread += sizeof(flex_uint8_t);
+    rd->bread += (flex_uint32_t) sizeof(flex_uint8_t);
     return 0;
 }
 
@@ -3122,7 +3011,7 @@ static int yytbl_read16 (void *v, struct yytbl_reader * rd)
         return -1;
     }
     *((flex_uint16_t *) v) = ntohs (*((flex_uint16_t *) v));
-    rd->bread += sizeof(flex_uint16_t);
+    rd->bread += (flex_uint32_t) sizeof(flex_uint16_t);
     return 0;
 }
 
@@ -3134,7 +3023,7 @@ static int yytbl_read32 (void *v, struct yytbl_reader * rd)
         return -1;
     }
     *((flex_uint32_t *) v) = ntohl (*((flex_uint32_t *) v));
-    rd->bread += sizeof(flex_uint32_t);
+    rd->bread += (flex_uint32_t) sizeof(flex_uint32_t);
     return 0;
 }
 
@@ -3177,7 +3066,7 @@ static int yytbl_hdr_read YYFARGS2(struct yytbl_hdr *, th, struct yytbl_reader *
         return -1;
     }
     else
-        rd->bread += bytes;
+        rd->bread += (flex_uint32_t) bytes;
 
     th->th_name = th->th_version + strlen (th->th_version) + 1;
     return 0;
@@ -3201,7 +3090,7 @@ static struct yytbl_dmap *yytbl_dmap_lookup YYFARGS2(struct yytbl_dmap *, dmap,
     return NULL;
 }
 
-/** Read a table while mapping its contents to the local array. 
+/** Read a table while mapping its contents to the local array.
  *  @param dmap used to performing mapping
  *  @return 0 on success
  */
@@ -3246,7 +3135,7 @@ static int yytbl_data_load YYFARGS2(struct yytbl_dmap *, dmap, struct yytbl_read
 
     if(M4_YY_TABLES_VERIFY)
         /* We point to the array itself */
-        p = dmap->dm_arr; 
+        p = dmap->dm_arr;
     else
         /* We point to the address of a pointer. */
         *dmap->dm_arr = p = (void *) yyalloc (bytes M4_YY_CALL_LAST_ARG);
@@ -3293,7 +3182,7 @@ static int yytbl_data_load YYFARGS2(struct yytbl_dmap *, dmap, struct yytbl_read
                 rv = yytbl_read8 (&t8, rd);
                 t32 = t8;
                 break;
-            default: 
+            default:
                 YY_FATAL_ERROR( "invalid td_flags" );   /* TODO: not fatal. */
                 return -1;
             }
@@ -3350,7 +3239,7 @@ static int yytbl_data_load YYFARGS2(struct yytbl_dmap *, dmap, struct yytbl_read
                     YY_FATAL_ERROR( "transition table not found" );   /* TODO: not fatal. */
                     return -1;
                 }
-                
+
                 if( M4_YY_TABLES_VERIFY)
                     v = &(((struct yy_trans_info *) (transdmap->dm_arr))[t32]);
                 else
@@ -3361,7 +3250,7 @@ static int yytbl_data_load YYFARGS2(struct yytbl_dmap *, dmap, struct yytbl_read
                         YY_FATAL_ERROR( "tables verification failed at YYTD_PTRANS" );
                 }else
                     ((struct yy_trans_info **) p)[0] = v;
-                
+
                 /* increment p */
                 p = (struct yy_trans_info **) p + 1;
             }
@@ -3476,8 +3365,8 @@ int yytables_fload YYFARGS1(FILE *, fp)
 }
 
 /** Destroy the loaded tables, freeing memory, etc.. */
-int yytables_destroy YYFARGS0(void)
-{   
+int yytables_destroy (M4_YY_DEF_ONLY_ARG)
+{
     struct yytbl_dmap *dmap=0;
 
     if(!M4_YY_TABLES_VERIFY){
@@ -3500,7 +3389,7 @@ int yytables_destroy YYFARGS0(void)
 
 
 m4_ifdef([[M4_YY_MAIN]], [[
-int main M4_YY_PARAMS(void);
+int main (void);
 
 int main ()
 {
@@ -3534,4 +3423,5 @@ m4_ifdef( [[M4_YY_IN_HEADER]],
 #undef YY_DECL_IS_OURS
 #undef YY_DECL
 #endif
+m4preproc_undivert(1)
 ]])
diff --git a/src/flexdef.h b/src/flexdef.h
index 27ad610..9dac654 100644
--- a/src/flexdef.h
+++ b/src/flexdef.h
@@ -57,23 +57,24 @@
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
 #endif
-#ifdef HAVE_UNISTD_H
+/* Required: dup() and dup2() in <unistd.h> */
 #include <unistd.h>
-#endif
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
 #ifdef HAVE_SYS_PARAMS_H
 #include <sys/params.h>
 #endif
-#ifdef HAVE_SYS_STAT_H
+/* Required: stat() in <sys/stat.h> */
 #include <sys/stat.h>
-#endif
+/* Required: wait() in <sys/wait.h> */
 #include <sys/wait.h>
 #include <stdbool.h>
-#ifdef HAVE_REGEX_H
+#include <stdarg.h>
+/* Required: regcomp(), regexec() and regerror() in <regex.h> */
 #include <regex.h>
-#endif
+/* Required: strcasecmp() in <strings.h> */
+#include <strings.h>
 #include "flexint.h"
 
 /* We use gettext. So, when we write strings which should be translated, we mark them with _() */
@@ -108,6 +109,8 @@
 #define ABS(x) ((x) < 0 ? -(x) : (x))
 #endif
 
+/* Whether an integer is a power of two */
+#define is_power_of_2(n) ((n) > 0 && ((n) & ((n) - 1)) == 0)
 
 #define unspecified -1
 
@@ -358,7 +361,6 @@ extern int interactive, lex_compat, posix_compat, do_yylineno;
 extern int useecs, fulltbl, usemecs, fullspd;
 extern int gen_line_dirs, performance_report, backing_up_report;
 extern int reentrant, bison_bridge_lval, bison_bridge_lloc;
-extern bool ansi_func_defs, ansi_func_protos;
 extern int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap;
 extern int csize;
 extern int yymore_used, reject, real_reject, continued_action, in_rule;
@@ -843,9 +845,6 @@ extern void flexfatal(const char *);
     }while(0)
 #endif /* ! HAVE_DECL___func__ */
 
-/* Convert a hexadecimal digit string to an integer value. */
-extern int htoi(unsigned char[]);
-
 /* Report an error message formatted  */
 extern void lerr(const char *, ...)
 #if defined(__GNUC__) && __GNUC__ >= 3
@@ -882,9 +881,6 @@ extern int myctoi(const char *);
 /* Return character corresponding to escape sequence. */
 extern unsigned char myesc(unsigned char[]);
 
-/* Convert an octal digit string to an integer value. */
-extern int otoi(unsigned char[]);
-
 /* Output a (possibly-formatted) string to the generated scanner. */
 extern void out(const char *);
 extern void out_dec(const char *, int);
@@ -975,8 +971,9 @@ extern void line_pinpoint(const char *, int);
 extern void format_synerr(const char *, const char *);
 extern void synerr(const char *);	/* report a syntax error */
 extern void format_warn(const char *, const char *);
-extern void warn(const char *);	/* report a warning */
+extern void lwarn(const char *);	/* report a warning */
 extern void yyerror(const char *);	/* report a parse error */
+extern int yyparse(void);		/* the YACC parser */
 
 
 /* from file scan.l */
@@ -1064,9 +1061,10 @@ extern struct Buf defs_buf;    /* a char* buffer to save #define'd some symbols
 extern struct Buf yydmap_buf;  /* a string buffer to hold yydmap elements */
 extern struct Buf m4defs_buf;  /* Holds m4 definitions. */
 extern struct Buf top_buf;     /* contains %top code. String buffer. */
+extern bool no_section3_escape; /* True if the undocumented option --unsafe-no-m4-sect3-escape was passed */
 
 /* For blocking out code from the header file. */
-#define OUT_BEGIN_CODE() outn("m4_ifdef( [[M4_YY_IN_HEADER]],,[[")
+#define OUT_BEGIN_CODE() outn("m4_ifdef( [[M4_YY_IN_HEADER]],,[[m4_dnl")
 #define OUT_END_CODE()   outn("]])")
 
 /* For setjmp/longjmp (instead of calling exit(2)). Linkage in main.c */
diff --git a/src/flexint.h b/src/flexint.h
index f9fa80c..43bb3a8 100644
--- a/src/flexint.h
+++ b/src/flexint.h
@@ -58,6 +58,10 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
diff --git a/src/gen.c b/src/gen.c
index 4688709..590e5d8 100644
--- a/src/gen.c
+++ b/src/gen.c
@@ -53,44 +53,30 @@ static int indent_level = 0;	/* each level is 8 spaces */
 static const char *get_int16_decl (void)
 {
 	return (gentables)
-		? "static yyconst flex_int16_t %s[%d] =\n    {   0,\n"
-		: "static yyconst flex_int16_t * %s = 0;\n";
+		? "static const flex_int16_t %s[%d] =\n    {   0,\n"
+		: "static const flex_int16_t * %s = 0;\n";
 }
 
 
 static const char *get_int32_decl (void)
 {
 	return (gentables)
-		? "static yyconst flex_int32_t %s[%d] =\n    {   0,\n"
-		: "static yyconst flex_int32_t * %s = 0;\n";
+		? "static const flex_int32_t %s[%d] =\n    {   0,\n"
+		: "static const flex_int32_t * %s = 0;\n";
 }
 
 static const char *get_state_decl (void)
 {
 	return (gentables)
-		? "static yyconst yy_state_type %s[%d] =\n    {   0,\n"
-		: "static yyconst yy_state_type * %s = 0;\n";
-}
-
-static const char *get_uint16_decl (void)
-{
-	return (gentables)
-		? "static yyconst flex_uint16_t %s[%d] =\n    {   0,\n"
-		: "static yyconst flex_uint16_t * %s = 0;\n";
-}
-
-static const char *get_uint32_decl (void)
-{
-	return (gentables)
-		? "static yyconst flex_uint32_t %s[%d] =\n    {   0,\n"
-		: "static yyconst flex_uint32_t * %s = 0;\n";
+		? "static const yy_state_type %s[%d] =\n    {   0,\n"
+		: "static const yy_state_type * %s = 0;\n";
 }
 
 static const char *get_yy_char_decl (void)
 {
 	return (gentables)
-		? "static yyconst YY_CHAR %s[%d] =\n    {   0,\n"
-		: "static yyconst YY_CHAR * %s = 0;\n";
+		? "static const YY_CHAR %s[%d] =\n    {   0,\n"
+		: "static const YY_CHAR * %s = 0;\n";
 }
 
 /* Indent to the current level. */
@@ -123,7 +109,7 @@ static struct yytbl_data *mkeoltbl (void)
 	tbl = calloc(1, sizeof (struct yytbl_data));
 	yytbl_data_init (tbl, YYTD_ID_RULE_CAN_MATCH_EOL);
 	tbl->td_flags = YYTD_DATA8;
-	tbl->td_lolen = num_rules + 1;
+	tbl->td_lolen = (flex_uint32_t) (num_rules + 1);
 	tbl->td_data = tdata =
 		calloc(tbl->td_lolen, sizeof (flex_int8_t));
 
@@ -231,7 +217,7 @@ static struct yytbl_data *mkctbl (void)
 	yytbl_data_init (tbl, YYTD_ID_TRANSITION);
 	tbl->td_flags = YYTD_DATA32 | YYTD_STRUCT;
 	tbl->td_hilen = 0;
-	tbl->td_lolen = tblend + numecs + 1;	/* number of structs */
+	tbl->td_lolen = (flex_uint32_t) (tblend + numecs + 1);	/* number of structs */
 
 	tbl->td_data = tdata =
 		calloc(tbl->td_lolen * 2, sizeof (flex_int32_t));
@@ -327,7 +313,7 @@ static struct yytbl_data *mkssltbl (void)
 	yytbl_data_init (tbl, YYTD_ID_START_STATE_LIST);
 	tbl->td_flags = YYTD_DATA32 | YYTD_PTRANS;
 	tbl->td_hilen = 0;
-	tbl->td_lolen = lastsc * 2 + 1;
+	tbl->td_lolen = (flex_uint32_t) (lastsc * 2 + 1);
 
 	tbl->td_data = tdata =
 		calloc(tbl->td_lolen, sizeof (flex_int32_t));
@@ -353,9 +339,9 @@ void genctbl (void)
 
 	/* Table of verify for transition and offset to next state. */
 	if (gentables)
-		out_dec ("static yyconst struct yy_trans_info yy_transition[%d] =\n    {\n", tblend + numecs + 1);
+		out_dec ("static const struct yy_trans_info yy_transition[%d] =\n    {\n", tblend + numecs + 1);
 	else
-		outn ("static yyconst struct yy_trans_info *yy_transition = 0;");
+		outn ("static const struct yy_trans_info *yy_transition = 0;");
 
 	/* We want the transition to be represented as the offset to the
 	 * next state, not the actual state number, which is what it currently
@@ -427,9 +413,9 @@ void genctbl (void)
 
 	/* Table of pointers to start states. */
 	if (gentables)
-		out_dec ("static yyconst struct yy_trans_info *yy_start_state_list[%d] =\n", lastsc * 2 + 1);
+		out_dec ("static const struct yy_trans_info *yy_start_state_list[%d] =\n", lastsc * 2 + 1);
 	else
-		outn ("static yyconst struct yy_trans_info **yy_start_state_list =0;");
+		outn ("static const struct yy_trans_info **yy_start_state_list =0;");
 
 	if (gentables) {
 		outn ("    {");
@@ -457,7 +443,7 @@ static struct yytbl_data *mkecstbl (void)
 	yytbl_data_init (tbl, YYTD_ID_EC);
 	tbl->td_flags |= YYTD_DATA32;
 	tbl->td_hilen = 0;
-	tbl->td_lolen = csize;
+	tbl->td_lolen = (flex_uint32_t) csize;
 
 	tbl->td_data = tdata =
 		calloc(tbl->td_lolen, sizeof (flex_int32_t));
@@ -523,8 +509,12 @@ void gen_find_action (void)
 		indent_puts ("yy_current_state = *--YY_G(yy_state_ptr);");
 		indent_puts ("YY_G(yy_lp) = yy_accept[yy_current_state];");
 
+		if (!variable_trailing_context_rules)
+			outn ("m4_ifdef( [[M4_YY_USES_REJECT]],\n[[");
 		if(reject_really_used)
 			outn ("find_rule: /* we branch to this label when backing up */");
+		if (!variable_trailing_context_rules)
+			outn ("]])\n");
 
 		indent_puts
 			("for ( ; ; ) /* until we find what rule we matched */");
@@ -663,7 +653,7 @@ struct yytbl_data *mkftbl (void)
 	yytbl_data_init (tbl, YYTD_ID_ACCEPT);
 	tbl->td_flags |= YYTD_DATA32;
 	tbl->td_hilen = 0;	/* it's a one-dimensional array */
-	tbl->td_lolen = lastdfa + 1;
+	tbl->td_lolen = (flex_uint32_t) (lastdfa + 1);
 
 	tbl->td_data = tdata =
 		calloc(tbl->td_lolen, sizeof (flex_int32_t));
@@ -752,7 +742,7 @@ void gen_next_compressed_state (char *char_map)
 		out_dec ("if ( yy_current_state >= %d )\n", lastdfa + 2);
 
 		++indent_level;
-		indent_puts ("yy_c = yy_meta[(unsigned int) yy_c];");
+		indent_puts ("yy_c = yy_meta[yy_c];");
 		--indent_level;
 	}
 
@@ -760,7 +750,7 @@ void gen_next_compressed_state (char *char_map)
 	--indent_level;
 
 	indent_puts
-		("yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];");
+		("yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];");
 }
 
 
@@ -810,11 +800,11 @@ void gen_next_match (void)
 	else if (fullspd) {
 		indent_puts ("{");
 		indent_puts
-			("yyconst struct yy_trans_info *yy_trans_info;\n");
+			("const struct yy_trans_info *yy_trans_info;\n");
 		indent_puts ("YY_CHAR yy_c;\n");
 		indent_put2s ("for ( yy_c = %s;", char_map);
 		indent_puts
-			("      (yy_trans_info = &yy_current_state[(unsigned int) yy_c])->");
+			("      (yy_trans_info = &yy_current_state[yy_c])->");
 		indent_puts ("yy_verify == yy_c;");
 		indent_put2s ("      yy_c = %s )", char_map_2);
 
@@ -977,7 +967,7 @@ void gen_NUL_trans (void)
 		out_dec ("int yy_c = %d;\n", NUL_ec);
 
 		indent_puts
-			("yyconst struct yy_trans_info *yy_trans_info;\n");
+			("const struct yy_trans_info *yy_trans_info;\n");
 		indent_puts
 			("yy_trans_info = &yy_current_state[(unsigned int) yy_c];");
 		indent_puts ("yy_current_state += yy_trans_info->yy_nxt;");
@@ -1106,7 +1096,7 @@ void gentabs (void)
 
         yyacclist_tbl = calloc(1,sizeof(struct yytbl_data));
         yytbl_data_init (yyacclist_tbl, YYTD_ID_ACCLIST);
-        yyacclist_tbl->td_lolen  = MAX(numas,1) + 1;
+        yyacclist_tbl->td_lolen  = (flex_uint32_t) (MAX(numas,1) + 1);
         yyacclist_tbl->td_data = yyacclist_data = 
             calloc(yyacclist_tbl->td_lolen, sizeof (flex_int32_t));
         yyacclist_curr = 1;
@@ -1215,7 +1205,7 @@ void gentabs (void)
 
 	yyacc_tbl = calloc(1, sizeof (struct yytbl_data));
 	yytbl_data_init (yyacc_tbl, YYTD_ID_ACCEPT);
-	yyacc_tbl->td_lolen = k;
+	yyacc_tbl->td_lolen = (flex_uint32_t) k;
 	yyacc_tbl->td_data = yyacc_data =
 		calloc(yyacc_tbl->td_lolen, sizeof (flex_int32_t));
     yyacc_curr=1;
@@ -1272,7 +1262,7 @@ void gentabs (void)
 		flex_int32_t *yymecs_data = 0;
 		yymeta_tbl = calloc(1, sizeof (struct yytbl_data));
 		yytbl_data_init (yymeta_tbl, YYTD_ID_META);
-		yymeta_tbl->td_lolen = numecs + 1;
+		yymeta_tbl->td_lolen = (flex_uint32_t) (numecs + 1);
 		yymeta_tbl->td_data = yymecs_data =
 			calloc(yymeta_tbl->td_lolen,
 					    sizeof (flex_int32_t));
@@ -1311,16 +1301,16 @@ void gentabs (void)
 
 	/* Begin generating yy_base */
 	out_str_dec ((tblend >= INT16_MAX || long_align) ?
-		     get_uint32_decl () : get_uint16_decl (),
+		     get_int32_decl () : get_int16_decl (),
 		     "yy_base", total_states + 1);
 
 	buf_prints (&yydmap_buf,
 		    "\t{YYTD_ID_BASE, (void**)&yy_base, sizeof(%s)},\n",
 		    (tblend >= INT16_MAX
-		     || long_align) ? "flex_uint32_t" : "flex_uint16_t");
+		     || long_align) ? "flex_int32_t" : "flex_int16_t");
 	yybase_tbl = calloc (1, sizeof (struct yytbl_data));
 	yytbl_data_init (yybase_tbl, YYTD_ID_BASE);
-	yybase_tbl->td_lolen = total_states + 1;
+	yybase_tbl->td_lolen = (flex_uint32_t) (total_states + 1);
 	yybase_tbl->td_data = yybase_data =
 		calloc(yybase_tbl->td_lolen,
 				    sizeof (flex_int32_t));
@@ -1378,7 +1368,7 @@ void gentabs (void)
 
 	yydef_tbl = calloc(1, sizeof (struct yytbl_data));
 	yytbl_data_init (yydef_tbl, YYTD_ID_DEF);
-	yydef_tbl->td_lolen = total_states + 1;
+	yydef_tbl->td_lolen = (flex_uint32_t) (total_states + 1);
 	yydef_tbl->td_data = yydef_data =
 		calloc(yydef_tbl->td_lolen, sizeof (flex_int32_t));
 
@@ -1400,17 +1390,17 @@ void gentabs (void)
 
 	/* Begin generating yy_nxt */
 	out_str_dec ((total_states >= INT16_MAX || long_align) ?
-		     get_uint32_decl () : get_uint16_decl (), "yy_nxt",
+		     get_int32_decl () : get_int16_decl (), "yy_nxt",
 		     tblend + 1);
 
 	buf_prints (&yydmap_buf,
 		    "\t{YYTD_ID_NXT, (void**)&yy_nxt, sizeof(%s)},\n",
 		    (total_states >= INT16_MAX
-		     || long_align) ? "flex_uint32_t" : "flex_uint16_t");
+		     || long_align) ? "flex_int32_t" : "flex_int16_t");
 
 	yynxt_tbl = calloc (1, sizeof (struct yytbl_data));
 	yytbl_data_init (yynxt_tbl, YYTD_ID_NXT);
-	yynxt_tbl->td_lolen = tblend + 1;
+	yynxt_tbl->td_lolen = (flex_uint32_t) (tblend + 1);
 	yynxt_tbl->td_data = yynxt_data =
 		calloc (yynxt_tbl->td_lolen, sizeof (flex_int32_t));
 
@@ -1447,7 +1437,7 @@ void gentabs (void)
 
 	yychk_tbl = calloc (1, sizeof (struct yytbl_data));
 	yytbl_data_init (yychk_tbl, YYTD_ID_CHK);
-	yychk_tbl->td_lolen = tblend + 1;
+	yychk_tbl->td_lolen = (flex_uint32_t) (tblend + 1);
 	yychk_tbl->td_data = yychk_data =
 		calloc(yychk_tbl->td_lolen, sizeof (flex_int32_t));
 
@@ -1706,7 +1696,7 @@ void make_tables (void)
 		yytbl_data_init (yynultrans_tbl, YYTD_ID_NUL_TRANS);
 		if (fullspd)
 			yynultrans_tbl->td_flags |= YYTD_PTRANS;
-		yynultrans_tbl->td_lolen = lastdfa + 1;
+		yynultrans_tbl->td_lolen = (flex_uint32_t) (lastdfa + 1);
 		yynultrans_tbl->td_data = yynultrans_data =
 			calloc(yynultrans_tbl->td_lolen,
 					    sizeof (flex_int32_t));
@@ -1875,7 +1865,7 @@ void make_tables (void)
 	if (!C_plus_plus) {
 		if (use_read) {
 			outn ("\terrno=0; \\");
-			outn ("\twhile ( (result = (int) read( fileno(yyin), buf, max_size )) < 0 ) \\");
+			outn ("\twhile ( (result = (int) read( fileno(yyin), buf, (yy_size_t) max_size )) < 0 ) \\");
 			outn ("\t{ \\");
 			outn ("\t\tif( errno != EINTR) \\");
 			outn ("\t\t{ \\");
@@ -1891,7 +1881,7 @@ void make_tables (void)
 			outn ("\tif ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \\");
 			outn ("\t\t{ \\");
 			outn ("\t\tint c = '*'; \\");
-			outn ("\t\tsize_t n; \\");
+			outn ("\t\tint n; \\");
 			outn ("\t\tfor ( n = 0; n < max_size && \\");
 			outn ("\t\t\t     (c = getc( yyin )) != EOF && c != '\\n'; ++n ) \\");
 			outn ("\t\t\tbuf[n] = (char) c; \\");
@@ -1904,7 +1894,7 @@ void make_tables (void)
 			outn ("\telse \\");
 			outn ("\t\t{ \\");
 			outn ("\t\terrno=0; \\");
-			outn ("\t\twhile ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \\");
+			outn ("\t\twhile ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \\");
 			outn ("\t\t\t{ \\");
 			outn ("\t\t\tif( errno != EINTR) \\");
 			outn ("\t\t\t\t{ \\");
@@ -1949,7 +1939,7 @@ void make_tables (void)
 		++indent_level;
 		indent_puts ("{");
 		indent_puts
-			("YY_G(yy_more_len) = YY_G(yy_c_buf_p) - YY_G(yytext_ptr);");
+			("YY_G(yy_more_len) = (int) (YY_G(yy_c_buf_p) - YY_G(yytext_ptr));");
 		indent_puts ("YY_G(yy_more_flag) = 0;");
 		indent_puts ("}");
 		--indent_level;
@@ -1973,7 +1963,7 @@ void make_tables (void)
 		("if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )");
 	++indent_level;
 	indent_puts ("{");
-	indent_puts ("yy_size_t yyl;");
+	indent_puts ("int yyl;");
 	do_indent ();
 	out_str ("for ( yyl = %s; yyl < yyleng; ++yyl )\n",
 		 yymore_used ? (yytext_is_array ? "YY_G(yy_prev_more_offset)" :
@@ -2164,7 +2154,11 @@ void make_tables (void)
 
 	if (sectnum == 3) {
 		OUT_BEGIN_CODE ();
+                if (!no_section3_escape)
+                   fputs("[[", stdout);
 		(void) flexscan ();	/* copy remainder of input to output */
+                if (!no_section3_escape)
+                   fputs("]]", stdout);
 		OUT_END_CODE ();
 	}
 }
diff --git a/src/main.c b/src/main.c
index e329e4e..e5eac44 100644
--- a/src/main.c
+++ b/src/main.c
@@ -106,7 +106,6 @@ int     num_input_files;
 jmp_buf flex_main_jmp_buf;
 bool   *rule_has_nl, *ccl_has_nl;
 int     nlch = '\n';
-bool    ansi_func_defs, ansi_func_protos;
 
 bool    tablesext, tablesverify, gentables;
 char   *tablesfilename=0,*tablesname=0;
@@ -128,8 +127,8 @@ static char outfile_path[MAXLINE];
 static int outfile_created = 0;
 static char *skelname = NULL;
 static int _stdout_closed = 0; /* flag to prevent double-fclose() on stdout. */
-const char *escaped_qstart = "[[]]M4_YY_NOOP[M4_YY_NOOP[M4_YY_NOOP[[]]";
-const char *escaped_qend   = "[[]]M4_YY_NOOP]M4_YY_NOOP]M4_YY_NOOP[[]]";
+const char *escaped_qstart = "]]M4_YY_NOOP[M4_YY_NOOP[M4_YY_NOOP[[";
+const char *escaped_qend   = "]]M4_YY_NOOP]M4_YY_NOOP]M4_YY_NOOP[[";
 
 /* For debugging. The max number of filters to apply to skeleton. */
 static int preproc_level = 1000;
@@ -277,7 +276,7 @@ void check_options (void)
 		flexerror (_("Can't use -+ with -CF option"));
 
 	if (C_plus_plus && yytext_is_array) {
-		warn (_("%array incompatible with -+ option"));
+		lwarn (_("%array incompatible with -+ option"));
 		yytext_is_array = false;
 	}
 
@@ -311,14 +310,8 @@ void check_options (void)
 		}
 	}
 
-    if (!ansi_func_defs)
-        buf_m4_define( &m4defs_buf, "M4_YY_NO_ANSI_FUNC_DEFS", NULL);
-
-    if (!ansi_func_protos)
-        buf_m4_define( &m4defs_buf, "M4_YY_NO_ANSI_FUNC_PROTOS", NULL);
-
-    if (extra_type)
-        buf_m4_define( &m4defs_buf, "M4_EXTRA_TYPE_DEFS", extra_type);
+	if (extra_type)
+		buf_m4_define( &m4defs_buf, "M4_EXTRA_TYPE_DEFS", extra_type);
 
 	if (!use_stdout) {
 		FILE   *prev_stdout;
@@ -358,28 +351,27 @@ void check_options (void)
 			if (!path) {
 				m4 = M4;
 			} else {
+				int m4_length = strlen(m4);
 				do {
-					char m4_path[PATH_MAX];
-					int length = strlen(path);
+					size_t length = strlen(path);
 					struct stat sbuf;
 
 					const char *endOfDir = strchr(path, ':');
 					if (!endOfDir)
 						endOfDir = path+length;
 
-					if ((endOfDir-path+2) >= sizeof(m4_path)) {
-					    path = endOfDir+1;
-						continue;
-					}
-
-					strncpy(m4_path, path, sizeof(m4_path));
-					m4_path[endOfDir-path] = '/';
-					m4_path[endOfDir-path+1] = '\0';
-					strncat(m4_path, m4, sizeof(m4_path));
-					if (stat(m4_path, &sbuf) == 0 &&
-						(S_ISREG(sbuf.st_mode)) && sbuf.st_mode & S_IXUSR) {
-						m4 = strdup(m4_path);
-						break;
+					{
+						char *m4_path = calloc(endOfDir-path + 1 + m4_length + 1, 1);
+
+						memcpy(m4_path, path, endOfDir-path);
+						m4_path[endOfDir-path] = '/';
+						memcpy(m4_path + (endOfDir-path) + 1, m4, m4_length + 1);
+						if (stat(m4_path, &sbuf) == 0 &&
+							(S_ISREG(sbuf.st_mode)) && sbuf.st_mode & S_IXUSR) {
+							m4 = m4_path;
+							break;
+						}
+						free(m4_path);
 					}
 					path = endOfDir+1;
 				} while (path[0]);
@@ -413,7 +405,7 @@ void check_options (void)
 		FILE   *tablesout;
 		struct yytbl_hdr hdr;
 		char   *pname = 0;
-		int     nbytes = 0;
+		size_t  nbytes = 0;
 
 		buf_m4_define (&m4defs_buf, "M4_YY_TABLES_EXTERNAL", NULL);
 
@@ -454,6 +446,8 @@ void check_options (void)
 	if ( bison_bridge_lloc)
         buf_m4_define (&m4defs_buf, "<M4_YY_BISON_LLOC>", NULL);
 
+    if (strchr(prefix, '[') || strchr(prefix, ']'))
+        flexerror(_("Prefix cannot include '[' or ']'"));
     buf_m4_define(&m4defs_buf, "M4_YY_PREFIX", prefix);
 
 	if (did_outfilename)
@@ -474,7 +468,7 @@ void check_options (void)
              char *str, *fmt = "#define %s %d\n";
              size_t strsz;
 
-             strsz = strlen(fmt) + strlen(scname[i]) + (int)(1 + log10(i)) + 2;
+             strsz = strlen(fmt) + strlen(scname[i]) + (size_t)(1 + ceil (log10(i))) + 2;
              str = malloc(strsz);
              if (!str)
                flexfatal(_("allocation of macro definition failed"));
@@ -647,7 +641,7 @@ void flexend (int exit_status)
 				"yypop_buffer_state",
 				"yyensure_buffer_stack",
                 "yyalloc",
-                "yyconst",
+                "const",
                 "yyextra",
                 "yyfree",
                 "yyget_debug",
@@ -972,7 +966,6 @@ void flexinit (int argc, char **argv)
 	tablesext = tablesverify = false;
 	gentables = true;
 	tablesfilename = tablesname = NULL;
-    ansi_func_defs = ansi_func_protos = true;
 
 	sawcmpflag = false;
 
@@ -1124,7 +1117,7 @@ void flexinit (int argc, char **argv)
 			break;
 
         case OPT_PREPROC_LEVEL:
-            preproc_level = strtol(arg,NULL,0);
+            preproc_level = (int) strtol(arg,NULL,0);
             break;
 
 		case OPT_MAIN:
@@ -1287,7 +1280,7 @@ void flexinit (int argc, char **argv)
 				}
 				else {
 					buf_strnappend (&userdef_buf, arg,
-							def - arg);
+							(int) (def - arg));
 					buf_strappend (&userdef_buf, " ");
 					buf_strappend (&userdef_buf,
 						       def + 1);
@@ -1349,14 +1342,6 @@ void flexinit (int argc, char **argv)
 			reject_really_used = false;
 			break;
 
-        case OPT_NO_ANSI_FUNC_DEFS:
-            ansi_func_defs = false;
-            break;
-
-        case OPT_NO_ANSI_FUNC_PROTOS:
-            ansi_func_protos = false;
-            break;
-
 		case OPT_NO_YY_PUSH_STATE:
 			//buf_strdefine (&userdef_buf, "YY_NO_PUSH_STATE", "1");
             buf_m4_define( &m4defs_buf, "M4_YY_NO_PUSH_STATE",0);
@@ -1443,6 +1428,10 @@ void flexinit (int argc, char **argv)
 			break;
 		case OPT_HEX:
 			trace_hex = 1;
+                        break;
+                case OPT_NO_SECT3_ESCAPE:
+                        no_section3_escape = true;
+                        break;
 		}		/* switch */
 	}			/* while scanopt() */
 
@@ -1598,9 +1587,9 @@ void readin (void)
 	if (!do_yywrap) {
 		if (!C_plus_plus) {
 			 if (reentrant)
-				outn ("\n#define yywrap(yyscanner) (/*CONSTCOND*/1)");
+				out_str ("\n#define %swrap(yyscanner) (/*CONSTCOND*/1)\n", prefix);
 			 else
-				outn ("\n#define yywrap() (/*CONSTCOND*/1)");
+				out_str ("\n#define %swrap() (/*CONSTCOND*/1)\n", prefix);
 		}
 		outn ("#define YY_SKIP_YYWRAP");
 	}
@@ -1609,10 +1598,7 @@ void readin (void)
 		outn ("\n#define FLEX_DEBUG");
 
 	OUT_BEGIN_CODE ();
-	if (csize == 256)
-		outn ("typedef unsigned char YY_CHAR;");
-	else
-		outn ("typedef char YY_CHAR;");
+	outn ("typedef flex_uint8_t YY_CHAR;");
 	OUT_END_CODE ();
 
 	if (C_plus_plus) {
@@ -1656,7 +1642,7 @@ void readin (void)
 
 	OUT_BEGIN_CODE ();
 	if (fullspd)
-		outn ("typedef yyconst struct yy_trans_info *yy_state_type;");
+		outn ("typedef const struct yy_trans_info *yy_state_type;");
 	else if (!C_plus_plus)
 		outn ("typedef int yy_state_type;");
 	OUT_END_CODE ();
@@ -1850,8 +1836,6 @@ void usage (void)
 		  "       --bison-bridge      scanner for bison pure parser.\n"
 		  "       --bison-locations   include yylloc support.\n"
 		  "       --stdinit           initialize yyin/yyout to stdin/stdout\n"
-          "       --noansi-definitions old-style function definitions\n"
-          "       --noansi-prototypes  empty parameter list in prototypes\n"
 		  "       --nounistd          do not include <unistd.h>\n"
 		  "       --noFUNCTION        do not generate a particular FUNCTION\n"
 		  "\n" "Miscellaneous:\n"
diff --git a/src/misc.c b/src/misc.c
index a2f67fc..ef27833 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -30,7 +30,6 @@
 /*  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */
 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
 /*  PURPOSE. */
-
 #include "flexdef.h"
 #include "tables.h"
 
@@ -111,30 +110,6 @@ void action_define (const char *defname, int value)
 	buf_append (&defs_buf, &cpy, 1);
 }
 
-
-#ifdef notdef
-/** Append "m4_define([[defname]],[[value]])m4_dnl\n" to the running buffer.
- *  @param defname The macro name.
- *  @param value The macro value, can be NULL, which is the same as the empty string.
- */
-static void action_m4_define (const char *defname, const char * value)
-{
-	char    buf[MAXLINE];
-
-    flexfatal ("DO NOT USE THIS FUNCTION!");
-
-	if ((int) strlen (defname) > MAXLINE / 2) {
-		format_pinpoint_message (_
-					 ("name \"%s\" ridiculously long"),
-					 defname);
-		return;
-	}
-
-	snprintf (buf, sizeof(buf), "m4_define([[%s]],[[%s]])m4_dnl\n", defname, value?value:"");
-	add_action (buf);
-}
-#endif
-
 /* Append "new_text" to the running buffer. */
 void add_action (const char *new_text)
 {
@@ -167,9 +142,14 @@ void add_action (const char *new_text)
 void   *allocate_array (int size, size_t element_size)
 {
 	void *mem;
-	size_t  num_bytes = element_size * size;
-
-	mem = malloc(num_bytes);
+#if HAVE_REALLOCARRAY
+	/* reallocarray has built-in overflow detection */
+	mem = reallocarray(NULL, (size_t) size, element_size);
+#else
+	size_t num_bytes = (size_t) size * element_size;
+	mem = (size && SIZE_MAX / (size_t) size < element_size) ? NULL :
+		malloc(num_bytes);
+#endif
 	if (!mem)
 		flexfatal (_
 			   ("memory allocation failed in allocate_array()"));
@@ -326,18 +306,6 @@ void flexfatal (const char *msg)
 }
 
 
-/* htoi - convert a hexadecimal digit string to an integer value */
-
-int htoi (unsigned char str[])
-{
-	unsigned int result;
-
-	(void) sscanf ((char *) str, "%x", &result);
-
-	return result;
-}
-
-
 /* lerr - report an error message */
 
 void lerr (const char *msg, ...)
@@ -372,7 +340,7 @@ void line_directive_out (FILE *output_file, int do_infile)
 {
 	char    directive[MAXLINE], filename[MAXLINE];
 	char   *s1, *s2, *s3;
-	static const char *line_fmt = "#line %d \"%s\"\n";
+	static const char line_fmt[] = "#line %d \"%s\"\n";
 
 	if (!gen_line_dirs)
 		return;
@@ -386,8 +354,8 @@ void line_directive_out (FILE *output_file, int do_infile)
 	s3 = &filename[sizeof (filename) - 2];
 
 	while (s2 < s3 && *s1) {
-		if (*s1 == '\\')
-			/* Escape the '\' */
+		if (*s1 == '\\' || *s1 == '"')
+			/* Escape the '\' or '"' */
 			*s2++ = '\\';
 
 		*s2++ = *s1++;
@@ -536,18 +504,15 @@ unsigned char myesc (unsigned char array[])
 		{		/* \<octal> */
 			int     sptr = 1;
 
-			while (isascii (array[sptr]) &&
-			       isdigit (array[sptr]))
-				/* Don't increment inside loop control
-				 * because if isdigit() is a macro it might
-				 * expand into multiple increments ...
-				 */
+			while (sptr <= 3 &&
+                               array[sptr] >= '0' && array[sptr] <= '7') {
 				++sptr;
+			}
 
 			c = array[sptr];
 			array[sptr] = '\0';
 
-			esc_char = otoi (array + 1);
+			esc_char = (unsigned char) strtoul (array + 1, NULL, 8);
 
 			array[sptr] = c;
 
@@ -558,18 +523,18 @@ unsigned char myesc (unsigned char array[])
 		{		/* \x<hex> */
 			int     sptr = 2;
 
-			while (isascii (array[sptr]) &&
-			       isxdigit (array[sptr]))
+			while (sptr <= 3 && isxdigit (array[sptr])) {
 				/* Don't increment inside loop control
-				 * because if isdigit() is a macro it might
+				 * because if isxdigit() is a macro it might
 				 * expand into multiple increments ...
 				 */
 				++sptr;
+			}
 
 			c = array[sptr];
 			array[sptr] = '\0';
 
-			esc_char = htoi (array + 2);
+			esc_char = (unsigned char) strtoul (array + 2, NULL, 16);
 
 			array[sptr] = c;
 
@@ -582,17 +547,6 @@ unsigned char myesc (unsigned char array[])
 }
 
 
-/* otoi - convert an octal digit string to an integer value */
-
-int otoi (unsigned char str[])
-{
-	unsigned int result;
-
-	(void) sscanf ((char *) str, "%o", &result);
-	return result;
-}
-
-
 /* out - various flavors of outputing a (possibly formatted) string for the
  *	 generated scanner, keeping track of the line count.
  */
@@ -692,7 +646,7 @@ char   *readable_form (int c)
 		return "' '";
 
 	else {
-		rform[0] = c;
+		rform[0] = (char) c;
 		rform[1] = '\0';
 
 		return rform;
@@ -705,9 +659,14 @@ char   *readable_form (int c)
 void   *reallocate_array (void *array, int size, size_t element_size)
 {
 	void *new_array;
-	size_t  num_bytes = element_size * size;
-
-	new_array = realloc(array, num_bytes);
+#if HAVE_REALLOCARRAY
+	/* reallocarray has built-in overflow detection */
+	new_array = reallocarray(array, (size_t) size, element_size);
+#else
+	size_t num_bytes = (size_t) size * element_size;
+	new_array = (size && SIZE_MAX / (size_t) size < element_size) ? NULL :
+		realloc(array, num_bytes);
+#endif
 	if (!new_array)
 		flexfatal (_("attempt to increase array size failed"));
 
@@ -832,9 +791,6 @@ void skelout (void)
 				/* %e end linkage-only code. */
 				OUT_END_CODE ();
 			}
-			else if (buf[1] == '#') {
-				/* %# a comment in the skel. ignore. */
-			}
 			else {
 				flexfatal (_("bad line in skeleton file"));
 			}
diff --git a/src/mkskel.sh b/src/mkskel.sh
index 02c397a..1aa59e1 100755
--- a/src/mkskel.sh
+++ b/src/mkskel.sh
@@ -21,17 +21,34 @@
 #  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 #  PURPOSE.
 
-cat <<!
-/* File created from flex.skl via mkskel.sh */
+if test ! $# = 3; then
+   echo 'Usage: mkskel.sh srcdir m4 version' >&2
+   exit 1
+fi
+echo '/* File created from flex.skl via mkskel.sh */
 
 #include "flexdef.h"
 
-const char *skel[] = {
-!
-
-sed 's/\\/&&/g' | sed 's/"/\\"/g' | sed 's/.*/  "&",/'
-
-cat <<!
-  0
-};
-!
+const char *skel[] = {'
+srcdir=$1
+m4=$2
+VERSION=$3
+case $VERSION in
+   *[!0-9.]*) echo 'Invalid version number' >&2; exit 1;;
+esac
+IFS=.
+set $VERSION
+sed 's/4_/a4_/g
+s/m4preproc_/m4_/g
+' "$srcdir/flex.skl" |
+"$m4" -P -I "$srcdir" "-DFLEX_MAJOR_VERSION=$1" \
+   "-DFLEX_MINOR_VERSION=$2" \
+   "-DFLEX_SUBMINOR_VERSION=$3" |
+sed '/^%#/d
+s/m4_/m4preproc_/g
+s/a4_/4_/g
+s/[\\"]/\\&/g
+s/.*/  "&",/'
+
+echo '  0
+};'
diff --git a/src/nfa.c b/src/nfa.c
index 816c356..9143cf6 100644
--- a/src/nfa.c
+++ b/src/nfa.c
@@ -287,6 +287,7 @@ void    finish_rule (int mach, int variable_trail_rule, int headcnt, int trailcn
 		add_action ("YY_RULE_SETUP\n");
 
 	line_directive_out(NULL, 1);
+        add_action("[[");
 }
 
 
diff --git a/src/options.c b/src/options.c
index 39d020e..366bc2e 100644
--- a/src/options.c
+++ b/src/options.c
@@ -213,10 +213,6 @@ optspec_t flexopts[] = {
 	,
 	{"--nowarn", OPT_NO_WARN, 0}
 	,			/* Suppress warning messages. */
-	{"--noansi-definitions", OPT_NO_ANSI_FUNC_DEFS, 0}
-	,
-	{"--noansi-prototypes", OPT_NO_ANSI_FUNC_PROTOS, 0}
-	,
 	{"--yyclass=NAME", OPT_YYCLASS, 0}
 	,
 	{"--yylineno", OPT_YYLINENO, 0}
@@ -275,7 +271,8 @@ optspec_t flexopts[] = {
 	,
 	{"--noyyset_lloc", OPT_NO_YYSET_LLOC, 0}
 	,
-
+        {"--unsafe-no-m4-sect3-escape", OPT_NO_SECT3_ESCAPE, 0}
+        ,
 	{0, 0, 0}		/* required final NULL entry. */
 };
 
diff --git a/src/options.h b/src/options.h
index ac3391c..5b51c23 100644
--- a/src/options.h
+++ b/src/options.h
@@ -68,8 +68,6 @@ enum flexopt_flag_t {
 	OPT_META_ECS,
 	OPT_NEVER_INTERACTIVE,
 	OPT_NO_ALIGN,
-        OPT_NO_ANSI_FUNC_DEFS,
-        OPT_NO_ANSI_FUNC_PROTOS,
 	OPT_NO_DEBUG,
 	OPT_NO_DEFAULT,
 	OPT_NO_ECS,
@@ -127,7 +125,8 @@ enum flexopt_flag_t {
 	OPT_YYCLASS,
 	OPT_YYLINENO,
 	OPT_YYMORE,
-	OPT_YYWRAP
+	OPT_YYWRAP,
+        OPT_NO_SECT3_ESCAPE,
 };
 
 #endif
diff --git a/src/parse.y b/src/parse.y
index 908361b..5a07320 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -80,7 +80,7 @@ int previous_continued_action;	/* whether the previous rule's action was '|' */
 	do{ \
         char fw3_msg[MAXLINE];\
         snprintf( fw3_msg, MAXLINE,(fmt), (a1), (a2) );\
-        warn( fw3_msg );\
+        lwarn( fw3_msg );\
 	}while(0)
 
 /* Expand a POSIX character class expression. */
@@ -140,7 +140,7 @@ goal		:  initlex sect1 sect1end sect2 initforrule
 			else
 				add_action( "ECHO" );
 
-			add_action( ";\n\tYY_BREAK\n" );
+			add_action( ";\n\tYY_BREAK]]\n" );
 			}
 		;
 
@@ -199,7 +199,9 @@ option		:  TOK_OUTFILE '=' NAME
 		|  TOK_EXTRA_TYPE '=' NAME
 			{ extra_type = xstrdup(nmstr); }
 		|  TOK_PREFIX '=' NAME
-			{ prefix = xstrdup(nmstr); }
+			{ prefix = xstrdup(nmstr);
+                          if (strchr(prefix, '[') || strchr(prefix, ']'))
+                              flexerror(_("Prefix must not contain [ or ]")); }
 		|  TOK_YYCLASS '=' NAME
 			{ yyclass = xstrdup(nmstr); }
 		|  TOK_HEADER_FILE '=' NAME
@@ -303,7 +305,7 @@ flexrule	:  '^' rule
 						scon_stk[++scon_stk_ptr] = i;
 
 				if ( scon_stk_ptr == 0 )
-					warn(
+					lwarn(
 			"all start conditions already have <<EOF>> rules" );
 
 				else
@@ -398,7 +400,7 @@ rule		:  re2 re
 				 * erroneously.
 				 */
 				if ( ! varlength || headcnt != 0 )
-					warn(
+					lwarn(
 		"trailing context made variable due to preceding '|' action" );
 
 				/* Mark as variable. */
@@ -453,7 +455,7 @@ rule		:  re2 re
 				/* See the comment in the rule for "re2 re"
 				 * above.
 				 */
-				warn(
+				lwarn(
 		"trailing context made variable due to preceding '|' action" );
 
 				varlength = true;
@@ -913,13 +915,13 @@ ccl_expr:
 		|  CCE_NEG_XDIGIT	{ CCL_NEG_EXPR(isxdigit); }
 		|  CCE_NEG_LOWER	{ 
 				if ( sf_case_ins() )
-					warn(_("[:^lower:] is ambiguous in case insensitive scanner"));
+					lwarn(_("[:^lower:] is ambiguous in case insensitive scanner"));
 				else
 					CCL_NEG_EXPR(islower);
 				}
 		|  CCE_NEG_UPPER	{
 				if ( sf_case_ins() )
-					warn(_("[:^upper:] ambiguous in case insensitive scanner"));
+					lwarn(_("[:^upper:] ambiguous in case insensitive scanner"));
 				else
 					CCL_NEG_EXPR(isupper);
 				}
@@ -977,6 +979,7 @@ void build_eof_action(void)
 		}
 
 	line_directive_out(NULL, 1);
+        add_action("[[");
 
 	/* This isn't a normal rule after all - don't count it as
 	 * such, so we don't have any holes in the rule numbering
@@ -1015,13 +1018,13 @@ void format_warn( const char *msg, const char arg[] )
 	char warn_msg[MAXLINE];
 
 	snprintf( warn_msg, sizeof(warn_msg), msg, arg );
-	warn( warn_msg );
+	lwarn( warn_msg );
 	}
 
 
-/* warn - report a warning, unless -w was given */
+/* lwarn - report a warning, unless -w was given */
 
-void warn( const char *str )
+void lwarn( const char *str )
 	{
 	line_warning( str, linenum );
 	}
diff --git a/src/regex.c b/src/regex.c
index 84f0e9e..38e658b 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -54,21 +54,17 @@ void flex_regcomp(regex_t *preg, const char *regex, int cflags)
 	memset (preg, 0, sizeof (regex_t));
 
 	if ((err = regcomp (preg, regex, cflags)) != 0) {
-        const int errbuf_sz = 200;
-        char *errbuf, *rxerr;
+		const size_t errbuf_sz = 200;
+		char *errbuf;
+		int n;
 
 		errbuf = malloc(errbuf_sz * sizeof(char));
 		if (!errbuf)
 			flexfatal(_("Unable to allocate buffer to report regcomp"));
-		rxerr = malloc(errbuf_sz * sizeof(char));
-		if (!rxerr)
-			flexfatal(_("Unable to allocate buffer for regerror"));
-		regerror (err, preg, rxerr, errbuf_sz);
-		snprintf (errbuf, errbuf_sz, "regcomp for \"%s\" failed: %s", regex, rxerr);
-
-		flexfatal (errbuf);
-        free(errbuf);
-        free(rxerr);
+		n = snprintf(errbuf, errbuf_sz, "regcomp for \"%s\" failed: ", regex);
+		regerror(err, preg, errbuf+n, errbuf_sz-(size_t)n);
+
+		flexfatal (errbuf); /* never returns - no need to free(errbuf) */
 	}
 }
 
@@ -80,11 +76,11 @@ void flex_regcomp(regex_t *preg, const char *regex, int cflags)
 char   *regmatch_dup (regmatch_t * m, const char *src)
 {
 	char   *str;
-	int     len;
+	size_t  len;
 
-	if (m == NULL || m->rm_so < 0)
+	if (m == NULL || m->rm_so < 0 || m->rm_eo < m->rm_so)
 		return NULL;
-	len = m->rm_eo - m->rm_so;
+	len = (size_t) (m->rm_eo - m->rm_so);
 	str = malloc((len + 1) * sizeof(char));
 	if (!str)
 		flexfatal(_("Unable to allocate a copy of the match"));
@@ -107,7 +103,7 @@ char   *regmatch_cpy (regmatch_t * m, char *dest, const char *src)
 		return dest;
 	}
 
-	snprintf (dest, regmatch_len(m), "%s", src + m->rm_so);
+	snprintf (dest, (size_t) regmatch_len(m), "%s", src + m->rm_so);
     return dest;
 }
 
@@ -150,7 +146,7 @@ int regmatch_strtol (regmatch_t * m, const char *src, char **endptr,
 	else
 		s = regmatch_dup (m, src);
 
-	n = strtol (s, endptr, base);
+	n = (int) strtol (s, endptr, base);
 
 	if (s != buf)
 		free (s);
diff --git a/src/scan.l b/src/scan.l
index cfc832d..66db864 100644
--- a/src/scan.l
+++ b/src/scan.l
@@ -38,6 +38,12 @@ extern bool tablesverify, tablesext;
 extern int trlcontxt; /* Set in  parse.y for each rule. */
 extern const char *escaped_qstart, *escaped_qend;
 
+#define M4QSTART "[""["
+#define M4QEND "]""]"
+
+#define ESCAPED_QSTART "[" M4QEND M4QSTART "[" M4QEND M4QSTART
+#define ESCAPED_QEND M4QEND "]" M4QSTART M4QEND "]" M4QSTART
+
 #define ACTION_ECHO add_action( yytext )
 #define ACTION_IFDEF(def, should_define) \
 	{ \
@@ -45,8 +51,8 @@ extern const char *escaped_qstart, *escaped_qend;
 		action_define( def, 1 ); \
 	}
 
-#define ACTION_ECHO_QSTART add_action (escaped_qstart)
-#define ACTION_ECHO_QEND   add_action (escaped_qend)
+#define ACTION_ECHO_QSTART add_action (ESCAPED_QSTART)
+#define ACTION_ECHO_QEND   add_action (ESCAPED_QEND)
 
 #define ACTION_M4_IFDEF(def, should_define) \
     do{ \
@@ -68,18 +74,20 @@ extern const char *escaped_qstart, *escaped_qend;
 #define RETURNNAME \
 	if(yyleng < MAXLINE) \
          { \
-	strcpy( nmstr, yytext ); \
+	strncpy( nmstr, yytext, sizeof(nmstr) ); \
+	return NAME; \
 	 } \
 	else \
-	 { \
+	 do { \
 	   synerr(_("Input line too long\n")); \
 	   FLEX_EXIT(EXIT_FAILURE);  \
-	 }  \
-	return NAME;
+	 } while (0)
 
 #define PUT_BACK_STRING(str, start) \
-	for ( i = strlen( str ) - 1; i >= start; --i ) \
-		unput((str)[i])
+	{ size_t i = strlen( str );	\
+	  while ( i > start )		\
+	    unput((str)[--i]);		\
+	}
 
 #define CHECK_REJECT(str) \
 	if ( all_upper( str ) ) \
@@ -93,6 +101,23 @@ extern const char *escaped_qstart, *escaped_qend;
 	if ( getenv("POSIXLY_CORRECT") ) \
 		posix_compat = true;
 
+#define START_CODEBLOCK(x) do { \
+    /* Emit the needed line directive... */\
+    if (indented_code == false) { \
+        linenum++; \
+        line_directive_out(NULL, 1); \
+    } \
+    add_action(M4QSTART); \
+    yy_push_state(CODEBLOCK); \
+    if ((indented_code = x)) ACTION_ECHO; \
+} while(0)
+
+#define END_CODEBLOCK do { \
+    yy_pop_state();\
+    add_action(M4QEND); \
+    if (!indented_code) line_directive_out(NULL, 0);\
+} while (0)
+
 %}
 
 %option caseless nodefault noreject stack noyy_top_state
@@ -104,7 +129,9 @@ extern const char *escaped_qstart, *escaped_qend;
 %x GROUP_WITH_PARAMS
 %x GROUP_MINUS_PARAMS
 %x EXTENDED_COMMENT
-%x COMMENT_DISCARD
+%x COMMENT_DISCARD CODE_COMMENT
+%x SECT3_NOESCAPE
+%x CHARACTER_CONSTANT
 
 WS		[[:blank:]]+
 OPTWS		[[:blank:]]*
@@ -125,8 +152,8 @@ CCL_EXPR	("[:"^?[[:alpha:]]+":]")
 
 LEXOPT		[aceknopr]
 
-M4QSTART    "[["
-M4QEND      "]]"
+M4QSTART    "[""["
+M4QEND      "]""]"
 
 %%
 	static int bracelevel, didadef, indented_code;
@@ -134,22 +161,17 @@ M4QEND      "]]"
 	static int option_sense;
 
 	int doing_codeblock = false;
-	int i, brace_depth=0, brace_start_line=0;
+	int brace_depth=0, brace_start_line=0;
 	char nmdef[MAXLINE];
 
 
 <INITIAL>{
-	^{WS}		indented_code = true; BEGIN(CODEBLOCK);
-	^"/*"		ACTION_ECHO; yy_push_state( COMMENT );
+	^{WS}		START_CODEBLOCK(true);
+	^"/*"		add_action("/*[""["); yy_push_state( COMMENT );
 	^#{OPTWS}line{WS}	yy_push_state( LINEDIR );
 	^"%s"{NAME}?	return SCDECL;
 	^"%x"{NAME}?	return XSCDECL;
-	^"%{".*{NL}	{
-			++linenum;
-			line_directive_out(NULL, 1);
-			indented_code = false;
-			BEGIN(CODEBLOCK);
-			}
+	^"%{".*{NL}	START_CODEBLOCK(false);
     ^"%top"[[:blank:]]*"{"[[:blank:]]*{NL}    {
                 brace_start_line = linenum;
                 ++linenum;
@@ -185,7 +207,7 @@ M4QEND      "]]"
 	^{NAME}		{
 			if(yyleng < MAXLINE)
         		 {
-			strcpy( nmstr, yytext );
+			strncpy( nmstr, yytext, sizeof(nmstr) );
 			 }
 			else
 			 {
@@ -203,14 +225,18 @@ M4QEND      "]]"
 }
 
 
-<COMMENT>{
-	"*/"		ACTION_ECHO; yy_pop_state();
-	"*"		ACTION_ECHO;
-    {M4QSTART}  ACTION_ECHO_QSTART;
-    {M4QEND}    ACTION_ECHO_QEND;
-	[^*\n]      ACTION_ECHO;
+<COMMENT,CODE_COMMENT>{ /* */
+        [^\[\]\*\n]*  ACTION_ECHO;
+        .           ACTION_ECHO;
+
 	{NL}	    ++linenum; ACTION_ECHO;
 }
+<COMMENT>{
+	"*/"	    add_action("*/]""]"); yy_pop_state();
+}
+<CODE_COMMENT>{
+        "*/"        ACTION_ECHO; yy_pop_state();
+}
 
 <COMMENT_DISCARD>{
         /* This is the same as COMMENT, but is discarded rather than output. */
@@ -223,7 +249,7 @@ M4QEND      "]]"
 <EXTENDED_COMMENT>{
     ")"         yy_pop_state();
     [^\n\)]+      ;
-    {NL}        ++linenum;        
+    {NL}        ++linenum;
 }
 
 <LINEDIR>{
@@ -237,19 +263,19 @@ M4QEND      "]]"
 			}
 	.		/* ignore spurious characters */
 }
+<ACTION,CODEBLOCK,ACTION_STRING,PERCENT_BRACE_ACTION,CHARACTER_CONSTANT,COMMENT,CODE_COMMENT>{
+   {M4QSTART}   ACTION_ECHO_QSTART;
+   {M4QEND}     ACTION_ECHO_QEND;
+}
 
 <CODEBLOCK>{
-	^"%}".*{NL}	++linenum; BEGIN(INITIAL);
-
-    {M4QSTART}  ACTION_ECHO_QSTART;
-    {M4QEND}    ACTION_ECHO_QEND;
-	.	        ACTION_ECHO;
-
+	^"%}".*{NL}	++linenum; END_CODEBLOCK;
+	[^\n%\[\]]*         ACTION_ECHO;
+        .		ACTION_ECHO;
 	{NL}		{
 			++linenum;
 			ACTION_ECHO;
-			if ( indented_code )
-				BEGIN(INITIAL);
+			if ( indented_code ) END_CODEBLOCK;
 			}
 }
 
@@ -274,10 +300,9 @@ M4QEND      "]]"
 
     {M4QSTART}  buf_strnappend(&top_buf, escaped_qstart, (int) strlen(escaped_qstart));
     {M4QEND}    buf_strnappend(&top_buf, escaped_qend, (int) strlen(escaped_qend));
-
-    [^{}\r\n]  {
-                buf_strnappend(&top_buf, yytext, yyleng);
-               }
+    ([^{}\r\n\[\]]+)|[^{}\r\n]  {
+       buf_strnappend(&top_buf, yytext, yyleng);
+    }
 
     <<EOF>>     {
                 linenum = brace_start_line;
@@ -293,7 +318,7 @@ M4QEND      "]]"
 	{NOT_WS}[^\r\n]*	{
  		        if(yyleng < MAXLINE)
  		         {
-			strcpy( nmdef, yytext );
+			strncpy( nmdef, yytext, sizeof(nmdef) );
  		         }
  		        else
  		         {
@@ -301,12 +326,12 @@ M4QEND      "]]"
  		           FLEX_EXIT(EXIT_FAILURE);
 			 }
 			/* Skip trailing whitespace. */
-			for ( i = strlen( nmdef ) - 1;
-			      i >= 0 && (nmdef[i] == ' ' || nmdef[i] == '\t');
-			      --i )
-				;
-
-			nmdef[i + 1] = '\0';
+			{
+			    size_t i = strlen( nmdef );
+			    while (i > 0 && (nmdef[i-1] == ' ' || nmdef[i-1] == '\t'))
+			       --i;
+			    nmdef[i] = '\0';
+			}
 
 			ndinstal( nmstr, nmdef );
 			didadef = true;
@@ -338,8 +363,6 @@ M4QEND      "]]"
             interactive = option_sense;
 			}
 	array		yytext_is_array = option_sense;
-    ansi-definitions ansi_func_defs = option_sense;
-    ansi-prototypes  ansi_func_protos = option_sense;
 	backup		backing_up_report = option_sense;
 	batch		interactive = ! option_sense;
     bison-bridge     bison_bridge_lval = option_sense;
@@ -437,7 +460,7 @@ M4QEND      "]]"
 	\"[^"\n]*\"	{
 			if(yyleng-1 < MAXLINE)
         		 {
-			strcpy( nmstr, yytext + 1 );
+			strncpy( nmstr, yytext + 1, sizeof(nmstr) );
 			 }
 			else
 			 {
@@ -462,19 +485,20 @@ M4QEND      "]]"
 	^"%{".*	++bracelevel; yyless( 2 );	/* eat only %{ */
 	^"%}".*	--bracelevel; yyless( 2 );	/* eat only %} */
 
-	^{WS}.*	ACTION_ECHO;	/* indented code in prolog */
-
-	^{NOT_WS}.*	{	/* non-indented code */
-			if ( bracelevel <= 0 )
-				{ /* not in %{ ... %} */
-				yyless( 0 );	/* put it all back */
-				yy_set_bol( 1 );
-				mark_prolog();
-				BEGIN(SECT2);
-				}
-			else
-				ACTION_ECHO;
-			}
+	^{WS} START_CODEBLOCK(true); /* indented code in prolog */
+
+	^{NOT_WS}.*	{
+        /* non-indented code */
+		if ( bracelevel <= 0 ) {
+            /* not in %{ ... %} */
+            yyless( 0 );	/* put it all back */
+            yy_set_bol( 1 );
+            mark_prolog();
+            BEGIN(SECT2);
+        } else {
+            START_CODEBLOCK(true);
+        }
+    }
 
 	.		ACTION_ECHO;
 	{NL}	++linenum; ACTION_ECHO;
@@ -532,6 +556,7 @@ M4QEND      "]]"
                             yyless(amt);
                         }
                         else {
+                            add_action("]""]");
                             continued_action = true;
                             ++linenum;
                             return '\n';
@@ -601,9 +626,10 @@ M4QEND      "]]"
 
 	^"%%".*		{
 			sectnum = 3;
-			BEGIN(SECT3);
+			BEGIN(no_section3_escape ? SECT3_NOESCAPE : SECT3);
 			outn("/* Begin user sect3 */");
 			yyterminate(); /* to stop the parser */
+
 			}
 
 	"["({FIRST_CCL_CHAR}|{CCL_EXPR})({CCL_CHAR}|{CCL_EXPR})*	{
@@ -611,7 +637,7 @@ M4QEND      "]]"
 
 			if(yyleng < MAXLINE)
         		 {
-			strcpy( nmstr, yytext );
+			strncpy( nmstr, yytext, sizeof(nmstr) );
 			 }
 			else
 			 {
@@ -669,7 +695,7 @@ M4QEND      "]]"
 
  			if(yyleng-1 < MAXLINE)
          		 {
-			strcpy( nmstr, yytext + 1 );
+			strncpy( nmstr, yytext + 1, sizeof(nmstr) );
  			 }
  			else
  			 {
@@ -685,7 +711,7 @@ nmstr[yyleng - 2 - end_is_ws] = '\0';  /* chop trailing brace */
 
 			else
 				{ /* push back name surrounded by ()'s */
-				int len = strlen( nmdefptr );
+				size_t len = strlen( nmdefptr );
                 if (end_is_ws)
                     unput(end_ch);
 
@@ -876,35 +902,31 @@ nmstr[yyleng - 2 - end_is_ws] = '\0';  /* chop trailing brace */
 <PERCENT_BRACE_ACTION>{
 	{OPTWS}"%}".*		bracelevel = 0;
 
-	<ACTION>"/*"		ACTION_ECHO; yy_push_state( COMMENT );
+	<ACTION>"/*"		ACTION_ECHO; yy_push_state( CODE_COMMENT );
 
 	<CODEBLOCK,ACTION>{
-		"reject"	{
-			ACTION_ECHO;
-			CHECK_REJECT(yytext);
-			}
-		"yymore"	{
-			ACTION_ECHO;
-			CHECK_YYMORE(yytext);
-			}
+		"reject" {
+            ACTION_ECHO;
+            CHECK_REJECT(yytext);
+        }
+		"yymore" {
+            ACTION_ECHO;
+            CHECK_YYMORE(yytext);
+        }
 	}
 
-    {M4QSTART}  ACTION_ECHO_QSTART;
-    {M4QEND}    ACTION_ECHO_QEND;
-    .           ACTION_ECHO;
-	{NL}		{
-			++linenum;
-			ACTION_ECHO;
-			if ( bracelevel == 0 ||
-			     (doing_codeblock && indented_code) )
-				{
-				if ( doing_rule_action )
-					add_action( "\tYY_BREAK\n" );
-
-				doing_rule_action = doing_codeblock = false;
-				BEGIN(SECT2);
-				}
-			}
+    .       ACTION_ECHO;
+	{NL}	{
+		++linenum;
+		ACTION_ECHO;
+		if (bracelevel <= 0 || (doing_codeblock && indented_code)) {
+            if ( doing_rule_action )
+                add_action( "\tYY_BREAK]""]\n" );
+
+            doing_rule_action = doing_codeblock = false;
+            BEGIN(SECT2);
+        }
+    }
 }
 
 
@@ -912,37 +934,41 @@ nmstr[yyleng - 2 - end_is_ws] = '\0';  /* chop trailing brace */
 <ACTION>{
 	"{"		ACTION_ECHO; ++bracelevel;
 	"}"		ACTION_ECHO; --bracelevel;
-    {M4QSTART}  ACTION_ECHO_QSTART;
-    {M4QEND}    ACTION_ECHO_QEND;
-	[^[:alpha:]_{}"'/\n\[\]]+	ACTION_ECHO;
-    [\[\]]      ACTION_ECHO;
-	{NAME}		ACTION_ECHO;
-	"'"([^'\\\n]|\\.)*"'"	ACTION_ECHO; /* character constant */
+	[^[:alpha:]_{}\"'/\n\[\]]+	ACTION_ECHO;
+        {NAME}		ACTION_ECHO;
+        "'"([^\'\\\n]|\\.)"'" ACTION_ECHO; /* character constant */
+        "'"             ACTION_ECHO; BEGIN(CHARACTER_CONSTANT);
 	\"		ACTION_ECHO; BEGIN(ACTION_STRING);
-	{NL}		{
-			++linenum;
-			ACTION_ECHO;
-			if ( bracelevel == 0 )
-				{
-				if ( doing_rule_action )
-					add_action( "\tYY_BREAK\n" );
+	{NL} {
+                ++linenum;
+                ACTION_ECHO;
+                if (bracelevel <= 0) {
+                   if ( doing_rule_action )
+                      add_action( "\tYY_BREAK]""]\n" );
 
-				doing_rule_action = false;
-				BEGIN(SECT2);
-				}
-			}
-	.		ACTION_ECHO;
+                   doing_rule_action = false;
+                   BEGIN(SECT2);
+                }
+             }
+        .      ACTION_ECHO;
 }
 
 <ACTION_STRING>{
-	[^"\\\n]+	ACTION_ECHO;
-	\\.		ACTION_ECHO;
-	{NL}		++linenum; ACTION_ECHO; BEGIN(ACTION);
+	[^\[\]\"\\\n]+	ACTION_ECHO;
 	\"		ACTION_ECHO; BEGIN(ACTION);
-	.		ACTION_ECHO;
+}
+<CHARACTER_CONSTANT>{
+	[^\[\]\'\\\n]+  ACTION_ECHO;
+        \'              ACTION_ECHO; BEGIN(ACTION);
+}
+<ACTION_STRING,CHARACTER_CONSTANT>{
+        (\\\n)*         ACTION_ECHO;
+	\\(\\\n)*.	ACTION_ECHO;
+	{NL}	++linenum; ACTION_ECHO; if (bracelevel <= 0) { BEGIN(SECT2); } else { BEGIN(ACTION); }
+        .	ACTION_ECHO;
 }
 
-<COMMENT,COMMENT_DISCARD,ACTION,ACTION_STRING><<EOF>>	{
+<COMMENT,CODE_COMMENT,COMMENT_DISCARD,ACTION,ACTION_STRING,CHARACTER_CONSTANT><<EOF>>	{
 			synerr( _( "EOF encountered inside an action" ) );
 			yyterminate();
 			}
@@ -961,15 +987,26 @@ nmstr[yyleng - 2 - end_is_ws] = '\0';  /* chop trailing brace */
 			return CHAR;
 			}
 
-
 <SECT3>{
-    {M4QSTART}  fwrite (escaped_qstart, 1, strlen(escaped_qstart), yyout);
-    {M4QEND}    fwrite (escaped_qend, 1, strlen(escaped_qend), yyout);
-	[^\[\]\n]*(\n?) ECHO;
-	(.|\n)      ECHO;
-	<<EOF>>		sectnum = 0; yyterminate();
+    {M4QSTART}   fputs(escaped_qstart, yyout);
+    {M4QEND}     fputs(escaped_qend, yyout);
+    [^\[\]]*     ECHO;
+    [][]         ECHO;
+    <<EOF>>      {
+        sectnum = 0;
+        yyterminate();
+    }
+}
+<SECT3_NOESCAPE>{
+    {M4QSTART}  fprintf(yyout, "[""[%s]""]", escaped_qstart);
+    {M4QEND}    fprintf(yyout, "[""[%s]""]", escaped_qend);
+    [^][]*      ECHO;
+    [][]        ECHO;
+    <<EOF>>		{
+       sectnum = 0;
+       yyterminate();
+    }
 }
-
 <*>.|\n			format_synerr( _( "bad character: %s" ), yytext );
 
 %%
diff --git a/src/scanflags.c b/src/scanflags.c
index aa3de8a..9699a31 100644
--- a/src/scanflags.c
+++ b/src/scanflags.c
@@ -39,9 +39,10 @@ size_t _sf_top_ix=0, _sf_max=0;
 void
 sf_push (void)
 {
-    if (_sf_top_ix + 1 >= _sf_max)
+    if (_sf_top_ix + 1 >= _sf_max) {
         _sf_max += 32;
         _sf_stk = realloc(_sf_stk, sizeof(scanflags_t) * _sf_max);
+    }
 
     // copy the top element
     _sf_stk[_sf_top_ix + 1] = _sf_stk[_sf_top_ix];
diff --git a/src/scanopt.c b/src/scanopt.c
index a118541..a475b6f 100644
--- a/src/scanopt.c
+++ b/src/scanopt.c
@@ -186,21 +186,21 @@ scanopt_t *scanopt_init (const optspec_t *options, int argc, char **argv, int fl
 			if (*p == '=' || isspace ((unsigned char)*p)
 			    || !(aux->flags & IS_LONG)) {
 				if (aux->namelen == 0)
-					aux->namelen = p - pname;
+					aux->namelen = (int) (p - pname);
 				aux->flags |= ARG_REQ;
 				aux->flags &= ~ARG_NONE;
 			}
 			/* detect optional arg. This overrides required arg. */
 			if (*p == '[') {
 				if (aux->namelen == 0)
-					aux->namelen = p - pname;
+					aux->namelen = (int) (p - pname);
 				aux->flags &= ~(ARG_REQ | ARG_NONE);
 				aux->flags |= ARG_OPT;
 				break;
 			}
 		}
 		if (aux->namelen == 0)
-			aux->namelen = p - pname;
+			aux->namelen = (int) (p - pname);
 	}
 	return (scanopt_t *) s;
 }
@@ -571,7 +571,7 @@ static int matchlongopt (char *str, char **optname, int *optlen, char **arg, int
 	while (*p && *p != '=')
 		++p;
 
-	*optlen = p - *optname;
+	*optlen = (int) (p - *optname);
 
 	if (!*p)
 		/* an option with no '=...' part. */
@@ -583,7 +583,7 @@ static int matchlongopt (char *str, char **optname, int *optlen, char **arg, int
 	*arg = p;
 	while (*p)
 		++p;
-	*arglen = p - *arg;
+	*arglen = (int) (p - *arg);
 
 	return 1;
 }
@@ -614,7 +614,7 @@ static int find_opt (struct _scanopt_t *s, int lookup_long, char *optstart, int
 			if (len > s->aux[i].namelen)
 				continue;
 
-			if (strncmp (optname, optstart, len) == 0) {
+			if (strncmp (optname, optstart, (size_t) len) == 0) {
 				nmatch++;
 				*opt_offset = i;
 
diff --git a/src/tables.c b/src/tables.c
index 3d043c6..980d2e9 100644
--- a/src/tables.c
+++ b/src/tables.c
@@ -55,7 +55,7 @@
 int     yytbl_write32 (struct yytbl_writer *wr, flex_uint32_t v);
 int     yytbl_write16 (struct yytbl_writer *wr, flex_uint16_t v);
 int     yytbl_write8 (struct yytbl_writer *wr, flex_uint8_t v);
-int     yytbl_writen (struct yytbl_writer *wr, void *v, flex_int32_t len);
+int     yytbl_writen (struct yytbl_writer *wr, void *v, int len);
 static flex_int32_t yytbl_data_geti (const struct yytbl_data *tbl, int i);
 /* XXX Not used
 static flex_int32_t yytbl_data_getijk (const struct yytbl_data *tbl, int i,
@@ -86,7 +86,7 @@ int yytbl_hdr_init (struct yytbl_hdr *th, const char *version_str,
 	memset (th, 0, sizeof (struct yytbl_hdr));
 
 	th->th_magic = YYTBL_MAGIC;
-	th->th_hsize = 14 + strlen (version_str) + 1 + strlen (name) + 1;
+	th->th_hsize = (flex_uint32_t) (14 + strlen (version_str) + 1 + strlen (name) + 1);
 	th->th_hsize += yypad64 (th->th_hsize);
 	th->th_ssize = 0;	// Not known at this point.
 	th->th_flags = 0;
@@ -213,13 +213,13 @@ int yytbl_data_fwrite (struct yytbl_writer *wr, struct yytbl_data *td)
 	for (i = 0; i < total_len; i++) {
 		switch (YYTDFLAGS2BYTES (td->td_flags)) {
 		case sizeof (flex_int8_t):
-			rv = yytbl_write8 (wr, yytbl_data_geti (td, i));
+			rv = yytbl_write8 (wr, (flex_uint8_t) yytbl_data_geti (td, i));
 			break;
 		case sizeof (flex_int16_t):
-			rv = yytbl_write16 (wr, yytbl_data_geti (td, i));
+			rv = yytbl_write16 (wr, (flex_uint16_t) yytbl_data_geti (td, i));
 			break;
 		case sizeof (flex_int32_t):
-			rv = yytbl_write32 (wr, yytbl_data_geti (td, i));
+			rv = yytbl_write32 (wr, (flex_uint32_t) yytbl_data_geti (td, i));
 			break;
 		default:
 			flex_die (_("invalid td_flags detected"));
@@ -232,7 +232,7 @@ int yytbl_data_fwrite (struct yytbl_writer *wr, struct yytbl_data *td)
 	}
 
 	/* Sanity check */
-	if (bwritten != (int) (12 + total_len * YYTDFLAGS2BYTES (td->td_flags))) {
+	if (bwritten != (12 + total_len * (int) YYTDFLAGS2BYTES (td->td_flags))) {
 		flex_die (_("insanity detected"));
 		return -1;
 	}
@@ -247,14 +247,14 @@ int yytbl_data_fwrite (struct yytbl_writer *wr, struct yytbl_data *td)
 	/* Now go back and update the th_hsize member */
 	if (fgetpos (wr->out, &pos) != 0
 	    || fsetpos (wr->out, &(wr->th_ssize_pos)) != 0
-	    || yytbl_write32 (wr, wr->total_written) < 0
+	    || yytbl_write32 (wr, (flex_uint32_t) wr->total_written) < 0
 	    || fsetpos (wr->out, &pos)) {
 		flex_die (_("get|set|fwrite32 failed"));
 		return -1;
 	}
 	else
 		/* Don't count the int we just wrote. */
-		wr->total_written -= sizeof (flex_int32_t);
+		wr->total_written -= (int) sizeof (flex_int32_t);
 	return bwritten;
 }
 
@@ -264,11 +264,11 @@ int yytbl_data_fwrite (struct yytbl_writer *wr, struct yytbl_data *td)
  *  @param  len  number of bytes
  *  @return  -1 on error. number of bytes written on success.
  */
-int yytbl_writen (struct yytbl_writer *wr, void *v, flex_int32_t len)
+int yytbl_writen (struct yytbl_writer *wr, void *v, int len)
 {
 	int  rv;
 
-	rv = fwrite (v, 1, len, wr->out);
+	rv = (int) fwrite (v, 1, (size_t) len, wr->out);
 	if (rv != len)
 		return -1;
 	wr->total_written += len;
@@ -283,11 +283,11 @@ int yytbl_writen (struct yytbl_writer *wr, void *v, flex_int32_t len)
 int yytbl_write32 (struct yytbl_writer *wr, flex_uint32_t v)
 {
 	flex_uint32_t vnet;
-	size_t  bytes, rv;
+	int  bytes, rv;
 
 	vnet = htonl (v);
-	bytes = sizeof (flex_uint32_t);
-	rv = fwrite (&vnet, bytes, 1, wr->out);
+	bytes = (int) sizeof (flex_uint32_t);
+	rv = (int) fwrite (&vnet, (size_t) bytes, 1, wr->out);
 	if (rv != 1)
 		return -1;
 	wr->total_written += bytes;
@@ -302,11 +302,11 @@ int yytbl_write32 (struct yytbl_writer *wr, flex_uint32_t v)
 int yytbl_write16 (struct yytbl_writer *wr, flex_uint16_t v)
 {
 	flex_uint16_t vnet;
-	size_t  bytes, rv;
+	int  bytes, rv;
 
 	vnet = htons (v);
-	bytes = sizeof (flex_uint16_t);
-	rv = fwrite (&vnet, bytes, 1, wr->out);
+	bytes = (int) sizeof (flex_uint16_t);
+	rv = (int) fwrite (&vnet, (size_t) bytes, 1, wr->out);
 	if (rv != 1)
 		return -1;
 	wr->total_written += bytes;
@@ -320,10 +320,10 @@ int yytbl_write16 (struct yytbl_writer *wr, flex_uint16_t v)
  */
 int yytbl_write8 (struct yytbl_writer *wr, flex_uint8_t v)
 {
-	size_t  bytes, rv;
+	int  bytes, rv;
 
-	bytes = sizeof (flex_uint8_t);
-	rv = fwrite (&v, bytes, 1, wr->out);
+	bytes = (int) sizeof (flex_uint8_t);
+	rv = (int) fwrite (&v, (size_t) bytes, 1, wr->out);
 	if (rv != 1)
 		return -1;
 	wr->total_written += bytes;
@@ -427,7 +427,7 @@ static void yytbl_data_seti (const struct yytbl_data *tbl, int i,
  */
 static size_t min_int_size (struct yytbl_data *tbl)
 {
-	flex_uint32_t i, total_len;
+	flex_int32_t i, total_len;
 	flex_int32_t max = 0;
 
 	total_len = yytbl_calc_total_len (tbl);
@@ -437,7 +437,7 @@ static size_t min_int_size (struct yytbl_data *tbl)
 
 		n = abs (yytbl_data_geti (tbl, i));
 
-		if (n > max)
+		if (max < n)
 			max = n;
 	}
 
@@ -460,7 +460,8 @@ static size_t min_int_size (struct yytbl_data *tbl)
  */
 void yytbl_data_compress (struct yytbl_data *tbl)
 {
-	flex_int32_t i, newsz, total_len;
+	flex_int32_t i, total_len;
+	size_t newsz;
 	struct yytbl_data newtbl;
 
 	yytbl_data_init (&newtbl, tbl->td_id);
@@ -471,19 +472,19 @@ void yytbl_data_compress (struct yytbl_data *tbl)
 	newsz = min_int_size (tbl);
 
 
-	if (newsz == (int) YYTDFLAGS2BYTES (tbl->td_flags))
+	if (newsz == YYTDFLAGS2BYTES (tbl->td_flags))
 		/* No change in this table needed. */
 		return;
 
-	if (newsz > (int) YYTDFLAGS2BYTES (tbl->td_flags)) {
+	if (newsz > YYTDFLAGS2BYTES (tbl->td_flags)) {
 		flex_die (_("detected negative compression"));
 		return;
 	}
 
 	total_len = yytbl_calc_total_len (tbl);
 	newtbl.td_data = calloc ((size_t) total_len, newsz);
-	newtbl.td_flags =
-		TFLAGS_CLRDATA (newtbl.td_flags) | BYTES2TFLAG (newsz);
+	newtbl.td_flags = (flex_uint16_t)
+		(TFLAGS_CLRDATA (newtbl.td_flags) | BYTES2TFLAG (newsz));
 
 	for (i = 0; i < total_len; i++) {
 		flex_int32_t g;
diff --git a/src/tables.h b/src/tables.h
index 2e4afe5..b8c2bbe 100644
--- a/src/tables.h
+++ b/src/tables.h
@@ -45,7 +45,7 @@ extern  "C" {
 #include "tables_shared.h"
 struct yytbl_writer {
 	FILE   *out;
-	flex_uint32_t total_written;
+	int total_written;
 			    /**< bytes written so far */
 	fpos_t  th_ssize_pos;
 			    /**< position of th_ssize */
diff --git a/src/tables_shared.c b/src/tables_shared.c
index 123626c..fca0438 100644
--- a/src/tables_shared.c
+++ b/src/tables_shared.c
@@ -57,7 +57,7 @@ dnl
  */
 yyskel_static flex_int32_t yytbl_calc_total_len (const struct yytbl_data *tbl)
 {
-	flex_int32_t n;
+	flex_uint32_t n;
 
 	/* total number of ints */
 	n = tbl->td_lolen;
@@ -66,5 +66,5 @@ yyskel_static flex_int32_t yytbl_calc_total_len (const struct yytbl_data *tbl)
 
 	if (tbl->td_id == YYTD_ID_TRANSITION)
 		n *= 2;
-	return n;
+	return (flex_int32_t) n;
 }
diff --git a/src/tblcmp.c b/src/tblcmp.c
index b0dc8b3..81dfbc1 100644
--- a/src/tblcmp.c
+++ b/src/tblcmp.c
@@ -420,7 +420,7 @@ void    inittbl (void)
 {
 	int i;
 
-	memset(chk, 0, current_max_xpairs * sizeof(int));
+	memset(chk, 0, (size_t) current_max_xpairs * sizeof(int));
 
 	tblend = 0;
 	firstfree = tblend + 1;
@@ -703,7 +703,8 @@ void    mktemplate (int state[], int statenum, int comstate)
 		if (state[i] == 0)
 			tnxt[tmpbase + i] = 0;
 		else {
-			transset[tsptr++] = i;
+			/* Note: range 1..256 is mapped to 1..255,0 */
+			transset[tsptr++] = (unsigned char) i;
 			tnxt[tmpbase + i] = comstate;
 		}
 
diff --git a/src/yylex.c b/src/yylex.c
index c3de1d5..521db7f 100644
--- a/src/yylex.c
+++ b/src/yylex.c
@@ -37,18 +37,19 @@
 
 
 /* yylex - scan for a regular expression token */
-
 extern char *yytext;
+extern FILE *yyout;
+bool no_section3_escape = false;
 int     yylex (void)
 {
 	int     toktype;
 	static int beglin = false;
 
-	if (eofseen)
+	if (eofseen) {
 		toktype = EOF;
-	else
+        } else {
 		toktype = flexscan ();
-
+        }
 	if (toktype == EOF || toktype == 0) {
 		eofseen = 1;