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Better test for conflict between optimization and FORTIFY_SOURCE

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This commit is contained in:
John Ralls
2014-05-02 16:37:47 -07:00
parent 33aa8a13a7
commit b36a98149b
1 changed files with 10 additions and 1 deletions
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11
configure.ac
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@@ -1357,7 +1357,16 @@ then
warnFLAGS="${warnFLAGS} -Wdeclaration-after-statement -Wno-pointer-sign"
# rpmbuild on FC4 forces this flag. Can't hurt to always compile with it.
warnFLAGS="${warnFLAGS} -D_FORTIFY_SOURCE=2"
cflags_save="$CFLAGS"
CFLAGS="$AM_CFLAGS $CFLAGS -Werror -D_FORTIFY_SOURCE=2"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
]],
[[ printf( "%s\n", "Hello World!");]])],
[warnFLAGS="${warnFLAGS} -D_FORTIFY_SOURCE=2"
AC_MSG_RESULT(OK)],
[AC_MSG_RESULT(No)])
CFLAGS="$cflags_save"
AM_CFLAGS="${warnFLAGS} ${AM_CFLAGS}"
AM_CXXFLAGS="${warnXXFLAGS} ${AM_CXXFLAGS}"