[PATCH 2/3] Makefile: add -fno-semantic-interposition

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From: William Roberts <william.c.roberts@xxxxxxxxx>

Add -fno-semantic-interposition to CFLAGS. This will restore
the DSO infrastructures protections to insure internal callers
of exported symbols call into libselinux and not something laoding first
in the library list.

Clang has this enabled by default.

Signed-off-by: William Roberts <william.c.roberts@xxxxxxxxx>
---
 libselinux/src/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libselinux/src/Makefile b/libselinux/src/Makefile
index 7f5a5d7418e9..c76110fbc650 100644
--- a/libselinux/src/Makefile
+++ b/libselinux/src/Makefile
@@ -65,7 +65,7 @@ EXTRA_CFLAGS = -fipa-pure-const -Wlogical-op -Wpacked-bitfield-compat -Wsync-nan
 	-Wcoverage-mismatch -Wcpp -Wformat-contains-nul -Wnormalized=nfc -Wsuggest-attribute=const \
 	-Wsuggest-attribute=noreturn -Wsuggest-attribute=pure -Wtrampolines -Wjump-misses-init \
 	-Wno-suggest-attribute=pure -Wno-suggest-attribute=const -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 \
-	-Wstrict-overflow=5
+	-Wstrict-overflow=5 -fno-semantic-interposition
 else
 EXTRA_CFLAGS = -Wunused-command-line-argument
 endif
-- 
2.17.1




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