44 lines
1.8 KiB
Diff
44 lines
1.8 KiB
Diff
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From: Jakub Jelinek <jakub@redhat.com>
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Subject: [PATCH] Use --push-state --as-needed and --pop-state instead of --as-needed and --no-as-needed for libgcc
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As discussed, using --as-needed and --no-as-needed is dangerous, because
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it results in --no-as-needed even for libraries after -lgcc_s, even when the
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default is --as-needed or --as-needed has been specified earlier on the
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command line.
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If the linker supports --push-state/--pop-state, we should IMHO use it.
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2018-04-11 Jakub Jelinek <jakub@redhat.com>
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* configure.ac (LD_AS_NEEDED_OPTION, LD_NO_AS_NEEDED_OPTION): Use
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--push-state --as-needed and --pop-state instead of --as-needed and
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--no-as-needed if ld supports it.
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* configure: Regenerated.
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Index: b/gcc/configure.ac
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===================================================================
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--- a/gcc/configure.ac
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+++ b/gcc/configure.ac
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@@ -5518,11 +5518,21 @@ if test $in_tree_ld = yes ; then
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if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
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&& test $in_tree_ld_is_elf = yes; then
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gcc_cv_ld_as_needed=yes
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+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
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+ gcc_cv_ld_as_needed_option='--push-state --as-needed'
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+ gcc_cv_ld_no_as_needed_option='--pop-state'
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+ fi
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fi
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elif test x$gcc_cv_ld != x; then
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# Check if linker supports --as-needed and --no-as-needed options
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if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
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gcc_cv_ld_as_needed=yes
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+ if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null; then
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+ if $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null; then
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+ gcc_cv_ld_as_needed_option='--push-state --as-needed'
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+ gcc_cv_ld_no_as_needed_option='--pop-state'
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+ fi
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+ fi
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fi
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case "$target:$gnu_ld" in
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*-*-solaris2*:no)
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