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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>
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8
aclocal.m4
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8
aclocal.m4
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@ -236,7 +236,13 @@ EOF
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-fPIC -shared -o conftest.so conftest.c
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1>&AS_MESSAGE_LOG_FD])
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then
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libc_linker_feature=yes
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp $2 -nostdlib \
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-nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
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| grep "warning: $1 ignored" > /dev/null 2>&1; then
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true
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else
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libc_linker_feature=yes
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fi
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fi
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rm -f conftest*
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fi
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32
configure
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32
configure
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@ -6009,7 +6009,13 @@ EOF
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_linker_feature=yes
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,-z,execstack -nostdlib \
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-nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
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| grep "warning: -z execstack ignored" > /dev/null 2>&1; then
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true
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else
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libc_linker_feature=yes
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fi
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fi
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rm -f conftest*
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fi
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@ -6039,7 +6045,13 @@ EOF
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_linker_feature=yes
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,-z,start-stop-gc -nostdlib \
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-nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
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| grep "warning: -z start-stop-gc ignored" > /dev/null 2>&1; then
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true
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else
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libc_linker_feature=yes
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fi
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fi
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rm -f conftest*
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fi
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@ -6070,7 +6082,13 @@ EOF
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_linker_feature=yes
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,--depaudit,x -nostdlib \
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-nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
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| grep "warning: --depaudit ignored" > /dev/null 2>&1; then
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true
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else
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libc_linker_feature=yes
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fi
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fi
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rm -f conftest*
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fi
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@ -6101,7 +6119,13 @@ EOF
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_linker_feature=yes
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,--no-dynamic-linker -nostdlib \
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-nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
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| grep "warning: --no-dynamic-linker ignored" > /dev/null 2>&1; then
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true
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else
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libc_linker_feature=yes
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fi
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fi
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rm -f conftest*
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fi
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