aw-overlay/sys-libs/glibc/files/2.19/glibc-2.19-hardened-configure-picdefault.patch

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2016-11-22 14:42:29 -05:00
Prevent default-fPIE from confusing configure into thinking
PIC code is default. This causes glibc to build both PIC and
non-PIC code as normal, which on the hardened compiler generates
PIC and PIE.
Patch by Kevin F. Quinn <kevquinn@gentoo.org>
Fixed for glibc 2.19 by Magnus Granberg <zorry@ume.nu>
--- configure.ac
+++ configure.ac
@@ -2145,7 +2145,7 @@
# error PIC is default.
#endif
EOF
-if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
+if eval "${CC-cc} -fno-PIE -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
libc_cv_pic_default=no
fi
rm -f conftest.*])
--- configure
+++ configure
@@ -7698,7 +7698,7 @@
# error PIC is default.
#endif
EOF
-if eval "${CC-cc} -S conftest.c 2>&5 1>&5"; then
+if eval "${CC-cc} -fno-PIE -S conftest.c 2>&5 1>&5"; then
libc_cv_pic_default=no
fi
rm -f conftest.*