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Disable FORTIFY_SOURCE on glibc targets

Improve binary distributions by defeating longjmp interception. See
http://code.google.com/p/webm/issues/detail?id=166 for more information.

Change-Id: I5ac731ec3f3570088597201d0f411473e2dffa4f

--- a/build/make/configure.sh

+++ b/build/make/configure.sh

@@ -952,6 +952,10 @@

     # shared objects

     enabled gcc && enabled pic && check_add_cflags -fPIC

+    # Work around longjmp interception on glibc >= 2.11, to improve binary

+    # compatibility. See http://code.google.com/p/webm/issues/detail?id=166

+    enabled linux && check_add_cflags -D_FORTIFY_SOURCE=0

+

     # Check for strip utility variant

     ${STRIP} -V 2>/dev/null | grep GNU >/dev/null && enable gnu_strip

-- 

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