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Use '-D_FORTIFY_SOURCE=2' when compiling with GCC or CLang. 

For info see: http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html


svn path=/trunk/; revision=38467
This commit is contained in:
Bill Meier 2011-08-11 02:14:20 +00:00
parent a5abe51580
commit 4bf797bcc0
1 changed files with 7 additions and 0 deletions
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7
configure.in
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@ -404,6 +404,13 @@ else
CFLAGS="-D_U_=\"\" $CFLAGS"
fi
# If we're running GCC or CLang, always use FORTIFY_SOURCE=2
# See: http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
# Note: FORTIFY_SOURCE is only effective for gcc -O2 (and -O1 ?)
if test "x$GCC" = "xyes" -o "x$CC" = "xclang" ; then
CFLAGS="-D_FORTIFY_SOURCE=2 $CFLAGS"
fi
#
# If the compiler supports GCC-style flags, enable a barrier "stop on
# warning".