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-rw-r--r--Makefile.am2
-rw-r--r--configure.ac3
-rw-r--r--m4/attributes.m465
3 files changed, 25 insertions, 45 deletions
diff --git a/Makefile.am b/Makefile.am
index 99ad9c030..2699e594c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -106,6 +106,8 @@ AM_CPPFLAGS = \
-I $(top_srcdir)/src/journal \
-I $(top_srcdir)/src/systemd
+AM_CFLAGS = $(WARNINGFLAGS)
+
if TARGET_GENTOO
AM_CPPFLAGS += \
-DKBD_LOADKEYS=\"/usr/bin/loadkeys\" \
diff --git a/configure.ac b/configure.ac
index 47a08dda6..ac56bc717 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,7 +60,7 @@ if test -z "$GPERF" ; then
AC_MSG_ERROR([*** gperf not found])
fi
-CC_CHECK_CFLAGS_APPEND([ \
+CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-pipe \
-Wall \
-W \
@@ -105,6 +105,7 @@ CC_CHECK_CFLAGS_APPEND([ \
-fdata-sections \
-Wl,--as-needed \
-Wl,--gc-sections])
+AC_SUBST([WARNINGFLAGS], $with_cflags)
LT_PREREQ(2.2)
LT_INIT
diff --git a/m4/attributes.m4 b/m4/attributes.m4
index 9d561c244..e354375e3 100644
--- a/m4/attributes.m4
+++ b/m4/attributes.m4
@@ -1,6 +1,7 @@
dnl Macros to check the presence of generic (non-typed) symbols.
dnl Copyright (c) 2006-2008 Diego Pettenò <flameeyes@gmail.com>
dnl Copyright (c) 2006-2008 xine project
+dnl Copyright (c) 2012 Lucas De Marchi <lucas.de.marchi@gmail.com>
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
@@ -32,52 +33,28 @@ dnl distribute a modified version of the Autoconf Macro, you may extend
dnl this special exception to the GPL to apply to your modified version as
dnl well.
-dnl Check if the flag is supported by compiler
-dnl CC_CHECK_CFLAGS_SILENT([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND])
-
-AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [
- AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]),
- [ac_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $1"
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([int a;])],
- [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"],
- [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"])
- CFLAGS="$ac_save_CFLAGS"
- ])
-
- AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
- [$2], [$3])
-])
-
-dnl Check if the flag is supported by compiler (cacheable)
-dnl CC_CHECK_CFLAGS([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND])
-
-AC_DEFUN([CC_CHECK_CFLAGS], [
- AC_CACHE_CHECK([if $CC supports $1 flag],
- AS_TR_SH([cc_cv_cflags_$1]),
- CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here!
- )
-
- AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
- [$2], [$3])
-])
-
-dnl CC_CHECK_CFLAG_APPEND(FLAG, [action-if-found], [action-if-not-found])
-dnl Check for CFLAG and appends them to CFLAGS if supported
-AC_DEFUN([CC_CHECK_CFLAG_APPEND], [
- AC_CACHE_CHECK([if $CC supports $1 flag],
- AS_TR_SH([cc_cv_cflags_$1]),
- CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here!
- )
-
- AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes],
- [CFLAGS="$CFLAGS $1"; DEBUG_CFLAGS="$DEBUG_CFLAGS $1"; $2], [$3])
+dnl Check if FLAG in ENV-VAR is supported by compiler and append it
+dnl to WHERE-TO-APPEND variable
+dnl CC_CHECK_FLAG_APPEND([WHERE-TO-APPEND], [ENV-VAR], [FLAG])
+
+AC_DEFUN([CC_CHECK_FLAG_APPEND], [
+ AC_CACHE_CHECK([if $CC supports flag $3 in envvar $2],
+ AS_TR_SH([cc_cv_$2_$3]),
+ [eval "AS_TR_SH([cc_save_$2])='${$2}'"
+ eval "AS_TR_SH([$2])='$3'"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([int a = 0; int main(void) { return a; } ])],
+ [eval "AS_TR_SH([cc_cv_$2_$3])='yes'"],
+ [eval "AS_TR_SH([cc_cv_$2_$3])='no'"])
+ eval "AS_TR_SH([$2])='$cc_save_$2'"])
+
+ AS_IF([eval test x$]AS_TR_SH([cc_cv_$2_$3])[ = xyes],
+ [eval "$1='${$1} $3'"])
])
-dnl CC_CHECK_CFLAGS_APPEND([FLAG1 FLAG2], [action-if-found], [action-if-not])
-AC_DEFUN([CC_CHECK_CFLAGS_APPEND], [
- for flag in $1; do
- CC_CHECK_CFLAG_APPEND($flag, [$2], [$3])
+dnl CC_CHECK_FLAGS_APPEND([WHERE-TO-APPEND], [ENV-VAR], [FLAG1 FLAG2])
+AC_DEFUN([CC_CHECK_FLAGS_APPEND], [
+ for flag in $3; do
+ CC_CHECK_FLAG_APPEND($1, $2, $flag)
done
])