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configure.ac : Add detection of -fsanitizer=undefined.

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Both Clang and GCC-4.9 now support the undefined behaviour sanitizer
so detect and enable it when configuring with --enable-sanitizer.

Also improve configure reporting of sanitizer and stack smash
protection.
This commit is contained in:
Erik de Castro Lopo 2014-11-09 10:43:56 +10:00
parent 9410ca5075
commit 4c7e1bd99c
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -138,7 +138,7 @@ AC_ARG_ENABLE(test-coverage,
AM_CONDITIONAL([ENABLE_TEST_COVERAGE], [test "$enable_test_coverage" = yes])
AC_ARG_ENABLE(sanitizer,
AC_HELP_STRING([--sanitizer], [enable ggc/clang code sanitizier runtime checks]))
AC_HELP_STRING([--enable-sanitizer], [enable ggc/clang code sanitizier runtime checks]))
#====================================================================================
# Check types and their sizes.
@ -579,11 +579,13 @@ if test x$ac_cv_c_compiler_gnu = xyes ; then
if test x$enable_sanitizer = "xyes" ; then
MN_ADD_CFLAGS([-fsanitize=address])
MN_ADD_CFLAGS([-fsanitize=integer])
MN_ADD_CFLAGS([-fsanitize=undefined])
# If we enable it for the C compiler we have to do it for the C++ compiler as well.
AC_LANG_PUSH([C++])
MN_ADD_CXXFLAGS([-fsanitize=address])
MN_ADD_CXXFLAGS([-fsanitize=integer])
MN_ADD_CXXFLAGS([-fsanitize=undefined])
AC_LANG_POP([C++])
fi
@ -707,6 +709,8 @@ if test x$ac_cv_c_compiler_gnu = xyes ; then
echo " ** Compile with GCC version 3.X or above to avoid this problem."
fi
fi
echo " Sanitizer enabled : ................... ${enable_sanitizer:-no}"
echo " Stack smash protection : .............. ${enable_stack_smash_protection:-no}"
./echo-install-dirs