diff options
Diffstat (limited to '')
| -rw-r--r-- | m4/lib-link.m4 | 53 |
1 files changed, 33 insertions, 20 deletions
diff --git a/m4/lib-link.m4 b/m4/lib-link.m4 index eecf70e..1a7c127 100644 --- a/m4/lib-link.m4 +++ b/m4/lib-link.m4 @@ -1,5 +1,5 @@ -# lib-link.m4 serial 31 -dnl Copyright (C) 2001-2020 Free Software Foundation, Inc. +# lib-link.m4 serial 34 +dnl Copyright (C) 2001-2024 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -69,11 +69,11 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], dnl Add $INC[]NAME to CPPFLAGS before performing the following checks, dnl because if the user has installed lib[]Name and not disabled its use dnl via --without-lib[]Name-prefix, he wants to use it. - ac_save_CPPFLAGS="$CPPFLAGS" + acl_saved_CPPFLAGS="$CPPFLAGS" AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [ - ac_save_LIBS="$LIBS" + acl_saved_LIBS="$LIBS" dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS, dnl because these -l options might require -L options that are present in dnl LIBS. -l options benefit only from the -L options listed before it. @@ -89,7 +89,7 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], [AC_LANG_PROGRAM([[$3]], [[$4]])], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])']) - LIBS="$ac_save_LIBS" + LIBS="$acl_saved_LIBS" ]) if test "$ac_cv_lib[]Name" = yes; then HAVE_LIB[]NAME=yes @@ -100,7 +100,7 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], HAVE_LIB[]NAME=no dnl If $LIB[]NAME didn't lead to a usable library, we don't need dnl $INC[]NAME either. - CPPFLAGS="$ac_save_CPPFLAGS" + CPPFLAGS="$acl_saved_CPPFLAGS" LIB[]NAME= LTLIB[]NAME= LIB[]NAME[]_PREFIX= @@ -196,8 +196,8 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\" ]) AC_ARG_WITH(PACK[-prefix], -[[ --with-]]PACK[[-prefix[=DIR] search for ]PACKLIBS[ in DIR/include and DIR/lib - --without-]]PACK[[-prefix don't search for ]PACKLIBS[ in includedir and libdir]], +[[ --with-]]PACK[[-prefix[=DIR] search for ]]PACKLIBS[[ in DIR/include and DIR/lib + --without-]]PACK[[-prefix don't search for ]]PACKLIBS[[ in includedir and libdir]], [ if test "X$withval" = "Xno"; then use_additional=no @@ -224,7 +224,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], additional_libdir3= fi dnl Search the library and its dependencies in $additional_libdir and - dnl $LDFLAGS. Using breadth-first-seach. + dnl $LDFLAGS. Use breadth-first search. LIB[]NAME= LTLIB[]NAME= INC[]NAME= @@ -537,12 +537,12 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], dnl Read the .la file. It defines the variables dnl dlname, library_names, old_library, dependency_libs, current, dnl age, revision, installed, dlopen, dlpreopen, libdir. - save_libdir="$libdir" + saved_libdir="$libdir" case "$found_la" in */* | *\\*) . "$found_la" ;; *) . "./$found_la" ;; esac - libdir="$save_libdir" + libdir="$saved_libdir" dnl We use only dependency_libs. for dep in $dependency_libs; do case "$dep" in @@ -631,7 +631,20 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], ;; -l*) dnl Handle this in the next round. - names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` + dnl But on GNU systems, ignore -lc options, because + dnl - linking with libc is the default anyway, + dnl - linking with libc.a may produce an error + dnl "/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie" + dnl or may produce an executable that always crashes, see + dnl <https://lists.gnu.org/archive/html/grep-devel/2020-09/msg00052.html>. + dep=`echo "X$dep" | sed -e 's/^X-l//'` + if test "X$dep" != Xc \ + || case $host_os in + linux* | gnu* | k*bsd*-gnu) false ;; + *) true ;; + esac; then + names_next_round="$names_next_round $dep" + fi ;; *.la) dnl Handle this in the next round. Throw away the .la's @@ -669,18 +682,18 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY], alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir" done dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl. - acl_save_libdir="$libdir" + acl_saved_libdir="$libdir" libdir="$alldirs" eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" + libdir="$acl_saved_libdir" LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" else dnl The -rpath options are cumulative. for found_dir in $rpathdirs; do - acl_save_libdir="$libdir" + acl_saved_libdir="$libdir" libdir="$found_dir" eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" + libdir="$acl_saved_libdir" LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" done fi @@ -777,18 +790,18 @@ AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS], for dir in $rpathdirs; do alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir" done - acl_save_libdir="$libdir" + acl_saved_libdir="$libdir" libdir="$alldirs" eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" + libdir="$acl_saved_libdir" $1="$flag" else dnl The -rpath options are cumulative. for dir in $rpathdirs; do - acl_save_libdir="$libdir" + acl_saved_libdir="$libdir" libdir="$dir" eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" + libdir="$acl_saved_libdir" $1="${$1}${$1:+ }$flag" done fi |