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| author | Denis Kaganovich <mahatma@eu.by> | 2016-10-20 22:01:39 +0200 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2016-11-15 14:15:19 -0500 |
| commit | c7409aded44634411a19b0b7178b7faa237835e6 (patch) | |
| tree | a3fbfec4d7a785a397fe9bb2fed98c7dbf86b855 /configure.ac | |
| parent | 001f81ad1e792dddd75aa8a6f9d1d9b0ba8dc16e (diff) | |
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configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index a64aeb9979..de0a40f1a7 100644 --- a/configure.ac +++ b/configure.ac @@ -1667,12 +1667,14 @@ echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'" # symbols (resolved by the linker), so filter out unknown symbols. # This will fail to produce the correct result if the compiler # defaults to -fstack-protector but this produces an undefined symbol -# other than __stack_chk_fail. However, compilers like that have not -# been encountered in practice. -libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'` +# other than __stack_chk_fail or __stack_chk_fail_local. However, +# compilers like that have not been encountered in practice. +libc_undefs=`echo "$libc_undefs" | \ + egrep '^(foobar|__stack_chk_fail|__stack_chk_fail_local)$'` case "$libc_undefs" in foobar) libc_cv_predef_stack_protector=no ;; '__stack_chk_fail +foobar'|'__stack_chk_fail_local foobar') libc_cv_predef_stack_protector=yes ;; *) AC_MSG_ERROR([unexpected symbols in test: $libc_undefs]) ;; esac], |