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| author | H.J. Lu <hjl.tools@gmail.com> | 2022-01-02 06:01:21 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-01-03 05:12:34 -0800 |
| commit | bd1616c6bee625a2726d0f8b477881b4b25697d8 (patch) | |
| tree | b3dae5efabfe793bcd72173eaab4a9dec1d06871 /aclocal.m4 | |
| parent | a51faeee6ae68da63e65eb0a1eb6c9ec2ce2148b (diff) | |
| download | glibc-bd1616c6bee625a2726d0f8b477881b4b25697d8.tar.gz glibc-bd1616c6bee625a2726d0f8b477881b4b25697d8.tar.xz glibc-bd1616c6bee625a2726d0f8b477881b4b25697d8.zip | |
Properly check linker option in LIBC_LINKER_FEATURE [BZ #28738]
Update LIBC_LINKER_FEATURE to also check linker warning message since unknown linker -z option may be ignored by linker: $ touch x.c $ gcc -shared -Wl,-z,foobar x.c /usr/bin/ld: warning: -z foobar ignored $ echo $? 0 $ This fixes BZ #28738. Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index 3a90d4f679..3e0bcdd12b 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -236,7 +236,13 @@ EOF -fPIC -shared -o conftest.so conftest.c 1>&AS_MESSAGE_LOG_FD]) then - libc_linker_feature=yes + if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp $2 -nostdlib \ + -nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \ + | grep "warning: $1 ignored" > /dev/null 2>&1; then + true + else + libc_linker_feature=yes + fi fi rm -f conftest* fi |