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+?RCS: $Id: libc.U,v 3.0.1.10 1997/02/28 15:56:48 ram Exp $
+?RCS:
+?RCS: Copyright (c) 1991-1993, Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 3.0.
+?RCS:
+?RCS: $Log: libc.U,v $
+?RCS: Revision 3.0.1.10 1997/02/28 15:56:48 ram
+?RCS: patch61: replaced .a with $_a all over the place
+?RCS: patch61: added support for HPUX-10 nm output
+?RCS:
+?RCS: Revision 3.0.1.9 1995/07/25 14:11:56 ram
+?RCS: patch56: now knows about OS/2 platforms
+?RCS:
+?RCS: Revision 3.0.1.8 1995/05/12 12:20:47 ram
+?RCS: patch54: made sure only most recent version of shared lib is picked
+?RCS: patch54: final "nm -p" check now uses xscan and xrun like everybody
+?RCS: patch54: can now grok linux nm output with lead __IO (ADO)
+?RCS: patch54: added support for linux ELF output, using 'W' for alias (ADO)
+?RCS:
+?RCS: Revision 3.0.1.7 1994/10/29 16:23:40 ram
+?RCS: patch36: now looks for shared libraries before anything else (ADO)
+?RCS: patch36: added new nm output format (ADO)
+?RCS:
+?RCS: Revision 3.0.1.6 1994/08/29 16:28:10 ram
+?RCS: patch32: added I-type symbols for nm output parsing on Linux
+?RCS:
+?RCS: Revision 3.0.1.5 1994/06/20 07:03:24 ram
+?RCS: patch30: checks are now presented by succession of if/elif
+?RCS: patch30: uniformized checks for shared objects with new so symbol
+?RCS:
+?RCS: Revision 3.0.1.4 1994/05/06 15:06:33 ram
+?RCS: patch23: added shared library knowledge (ADO and WED)
+?RCS:
+?RCS: Revision 3.0.1.3 1994/01/24 14:12:17 ram
+?RCS: patch16: can now export nm_extract as an internal-use only variable
+?RCS:
+?RCS: Revision 3.0.1.2 1993/09/13 16:09:03 ram
+?RCS: patch10: added special handling for Apollo systems (WAD)
+?RCS:
+?RCS: Revision 3.0.1.1 1993/08/27 14:40:03 ram
+?RCS: patch7: added entry for /usr/shlib/libc.so (OSF/1 machines)
+?RCS:
+?RCS: Revision 3.0 1993/08/18 12:08:57 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:libc +nm_extract: echo n c rm test grep Getfile Myread Oldconfig Loc \
+ sed libs incpath libpth runnm nm_opt nm_so_opt contains xlibpth so _a _o
+?MAKE: -pick add $@ %<
+?S:libc:
+?S: This variable contains the location of the C library.
+?S:.
+?S:nm_extract:
+?S: This variable holds the name of the extraction command used to process
+?S: the output of nm and yield the list of defined symbols. It is used
+?S: internally by Configure.
+?S:.
+?T:thislib try libnames xxx xscan xrun thisname com tans file
+?F:!libnames
+?LINT:change nm_opt
+case "$runnm" in
+true)
+?X: indentation is wrong on purpose--RAM
+: get list of predefined functions in a handy place
+echo " "
+case "$libc" in
+'') libc=unknown
+ case "$libs" in
+ *-lc_s*) libc=`./loc libc_s$_a $libc $libpth`
+ esac
+ ;;
+esac
+libnames='';
+case "$libs" in
+'') ;;
+*) for thislib in $libs; do
+ case "$thislib" in
+ -lc|-lc_s)
+ : Handle C library specially below.
+ ;;
+ -l*)
+ thislib=`echo $thislib | $sed -e 's/^-l//'`
+ if try=`./loc lib$thislib.$so.'*' X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc lib$thislib.$so X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc lib$thislib$_a X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc $thislib$_a X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc lib$thislib X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc $thislib X $libpth`; $test -f "$try"; then
+ :
+ elif try=`./loc Slib$thislib$_a X $xlibpth`; $test -f "$try"; then
+ :
+ else
+ try=''
+ fi
+ libnames="$libnames $try"
+ ;;
+ *) libnames="$libnames $thislib" ;;
+ esac
+ done
+ ;;
+esac
+?X:
+?X: Some systems (e.g. DG/UX) use "environmental" links, which make the test
+?X: -f fail. Ditto for symbolic links. So in order to reliably check the
+?X: existence of a file, we use test -r. It will still fail with DG/UX links
+?X: though, but at least it will detect symbolic links. At some strategic
+?X: points, we make use of (test -h), using a sub-shell in case builtin test
+?X: does not implement the -h check for symbolic links. This makes it
+?X: possible to preset libc in a hint file for instance and have it show up
+?X: as-is in the question.
+?X:
+xxx=normal
+case "$libc" in
+unknown)
+?X:
+?X: The sed below transforms .so.9 .so.12 into something like .so.0009 .so.0012,
+?X: then sorts on it to allow keeping .so.12 instead of .so.9 as the latest
+?X: up-to-date library. The initial filename (before sed munging, saved in hold
+?X: space via 'h') is appended via 'G' before sorting, then the leading munged
+?X: part is removed after sorting. Nice efficient work from Tye McQueen.
+?X: The initial blurfl is here to prevent the trailing pipe from producing an
+?X: empty string, causing Configure to output all its set variables!
+?X:
+ set /lib/libc.$so
+ for xxx in $libpth; do
+ $test -r $1 || set $xxx/libc.$so
+ $test -r $1 || \
+ set `echo blurfl; echo /usr/lib/libc.$so.[0-9]* | \
+ tr ' ' '\012' | egrep -v '\.[A-Za-z]*$' | $sed -e '
+ h
+ s/[0-9][0-9]*/0000&/g
+ s/0*\([0-9][0-9][0-9][0-9][0-9]\)/\1/g
+ G
+ s/\n/ /' | \
+ sort | $sed -e 's/^.* //'`
+ eval set \$$#
+ done
+ $test -r $1 || set /usr/ccs/lib/libc.$so
+ $test -r $1 || set /lib/libsys_s$_a
+ ;;
+*)
+?X: ensure the test below for the (shared) C library will fail
+ set blurfl
+ ;;
+esac
+if $test -r "$1"; then
+ echo "Your (shared) C library seems to be in $1."
+ libc="$1"
+elif $test -r /lib/libc && $test -r /lib/clib; then
+?X:
+?X: Apollo has its C library in /lib/clib AND /lib/libc
+?X: not to mention its math library in /lib/syslib...
+?X:
+ echo "Your C library seems to be in both /lib/clib and /lib/libc."
+ xxx=apollo
+ libc='/lib/clib /lib/libc'
+ if $test -r /lib/syslib; then
+ echo "(Your math library is in /lib/syslib.)"
+?X: Put syslib in libc -- not quite right, but won't hurt
+ libc="$libc /lib/syslib"
+ fi
+elif $test -r "$libc" || (test -h "$libc") >/dev/null 2>&1; then
+ echo "Your C library seems to be in $libc, as you said before."
+?X: For mips, and...
+elif $test -r $incpath/usr/lib/libc$_a; then
+ libc=$incpath/usr/lib/libc$_a;
+ echo "Your C library seems to be in $libc. That's fine."
+elif $test -r /lib/libc$_a; then
+ libc=/lib/libc$_a;
+ echo "Your C library seems to be in $libc. You're normal."
+else
+ if tans=`./loc libc$_a blurfl/dyick $libpth`; $test -r "$tans"; then
+ :
+ elif tans=`./loc libc blurfl/dyick $libpth`; $test -r "$tans"; then
+ libnames="$libnames "`./loc clib blurfl/dyick $libpth`
+ elif tans=`./loc clib blurfl/dyick $libpth`; $test -r "$tans"; then
+ :
+ elif tans=`./loc Slibc$_a blurfl/dyick $xlibpth`; $test -r "$tans"; then
+ :
+ elif tans=`./loc Mlibc$_a blurfl/dyick $xlibpth`; $test -r "$tans"; then
+ :
+ else
+ tans=`./loc Llibc$_a blurfl/dyick $xlibpth`
+ fi
+ if $test -r "$tans"; then
+ echo "Your C library seems to be in $tans, of all places."
+ libc=$tans
+ else
+ libc='blurfl'
+ fi
+fi
+if $test $xxx = apollo -o -r "$libc" || (test -h "$libc") >/dev/null 2>&1; then
+ dflt="$libc"
+ cat <<EOM
+
+If the guess above is wrong (which it might be if you're using a strange
+compiler, or your machine supports multiple models), you can override it here.
+
+EOM
+else
+ dflt=''
+ echo $libpth | tr ' ' '\012' | sort | uniq > libpath
+ cat >&4 <<EOM
+I can't seem to find your C library. I've looked in the following places:
+
+EOM
+ $sed 's/^/ /' libpath
+ cat <<EOM
+
+None of these seems to contain your C library. I need to get its name...
+
+EOM
+fi
+fn=f
+rp='Where is your C library?'
+. ./getfile
+libc="$ans"
+
+echo " "
+echo $libc $libnames | tr ' ' '\012' | sort | uniq > libnames
+set X `cat libnames`
+shift
+xxx=files
+case $# in 1) xxx=file; esac
+echo "Extracting names from the following $xxx for later perusal:" >&4
+echo " "
+$sed 's/^/ /' libnames >&4
+echo " "
+$echo $n "This may take a while...$c" >&4
+
+?X:
+?X: Linux may need the special Dynamic option to nm for shared libraries.
+?X: In general, this is stored in the nm_so_opt variable.
+?X: Unfortunately, that option may be fatal on non-shared libraries.
+?X:
+for file in $*; do
+ case $file in
+ *$so*) nm $nm_so_opt $nm_opt $file 2>/dev/null;;
+ *) nm $nm_opt $file 2>/dev/null;;
+ esac
+done >libc.tmp
+
+$echo $n ".$c"
+?X:
+?X: To accelerate processing, we look at the correct 'sed' command
+?X: by using a small subset of libc.tmp, i.e. fprintf function.
+?X: When we know which sed command to use, do the name extraction
+?X:
+$grep fprintf libc.tmp > libc.ptf
+?X:
+?X: In order to ehance readability and save some space, we define
+?X: some variables that will be "eval"ed.
+?X:
+xscan='eval "<libc.ptf $com >libc.list"; $echo $n ".$c" >&4'
+xrun='eval "<libc.tmp $com >libc.list"; echo "done" >&4'
+?X: BSD-like output, I and W types added for Linux
+?X: Some versions of Linux include a leading __IO in the symbol name.
+?X: HPUX10 reportedly has trailing spaces, though I'm suprised it has
+?X: BSD-like output. (AD).
+xxx='[ADTSIW]'
+if com="$sed -n -e 's/__IO//' -e 's/^.* $xxx *_[_.]*//p' -e 's/^.* $xxx *//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+?X: SYSV-like output
+elif com="$sed -n -e 's/^__*//' -e 's/^\([a-zA-Z_0-9$]*\).*xtern.*/\1/p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e '/|UNDEF/d' -e '/FUNC..GL/s/^.*|__*//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e 's/^.* D __*//p' -e 's/^.* D //p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e 's/^_//' -e 's/^\([a-zA-Z_0-9]*\).*xtern.*text.*/\1/p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e 's/^.*|FUNC |GLOB .*|//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$grep '|' | $sed -n -e '/|COMMON/d' -e '/|DATA/d' \
+ -e '/ file/d' -e 's/^\([^ ]*\).*/\1/p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e 's/^.*|FUNC |GLOB .*|//p' -e 's/^.*|FUNC |WEAK .*|//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+?X: mips nm output (sysV)
+elif com="$sed -n -e 's/^__//' -e '/|Undef/d' -e '/|Proc/s/ .*//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e '/Def. Text/s/.* \([^ ]*\)\$/\1/p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+?X: OS/2 nm output
+elif com="$sed -n -e 's/^[-0-9a-f ]*_\(.*\)=.*/\1/p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+elif com="$sed -n -e 's/.*\.text n\ \ \ \.//p'";\
+ eval $xscan;\
+ $contains '^fprintf$' libc.list >/dev/null 2>&1; then
+ eval $xrun
+else
+ nm -p $* 2>/dev/null >libc.tmp
+ $grep fprintf libc.tmp > libc.ptf
+ if com="$sed -n -e 's/^.* [ADTSIW] *_[_.]*//p' -e 's/^.* [ADTSIW] //p'";\
+ eval $xscan; $contains '^fprintf$' libc.list >/dev/null 2>&1
+ then
+ nm_opt='-p'
+ eval $xrun
+ else
+ echo " "
+ echo "nm didn't seem to work right. Trying ar instead..." >&4
+ com=''
+ if ar t $libc > libc.tmp; then
+ for thisname in $libnames; do
+ ar t $thisname >>libc.tmp
+ done
+ $sed -e "s/\\$_o\$//" < libc.tmp > libc.list
+ echo "Ok." >&4
+ else
+ echo "ar didn't seem to work right." >&4
+ echo "Maybe this is a Cray...trying bld instead..." >&4
+ if bld t $libc | $sed -e 's/.*\///' -e "s/\\$_o:.*\$//" > libc.list
+ then
+ for thisname in $libnames; do
+ bld t $libnames | \
+ $sed -e 's/.*\///' -e "s/\\$_o:.*\$//" >>libc.list
+ ar t $thisname >>libc.tmp
+ done
+ echo "Ok." >&4
+ else
+ echo "That didn't work either. Giving up." >&4
+ exit 1
+ fi
+ fi
+ fi
+fi
+nm_extract="$com"
+if $test -f /lib/syscalls.exp; then
+ echo " "
+ echo "Also extracting names from /lib/syscalls.exp for good ole AIX..." >&4
+ $sed -n 's/^\([^ ]*\)[ ]*syscall$/\1/p' /lib/syscalls.exp >>libc.list
+fi
+?X: remember, indentation is wrong on purpose--RAM
+;;
+esac
+$rm -f libnames libpath
+