diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index acd4e0cf6c..343eb24c90 100644 --- a/configure.ac +++ b/configure.ac @@ -795,6 +795,14 @@ if test x$use_hardening != xno; then AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"]) AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"]) + AX_CHECK_COMPILE_FLAG([-fcf-protection=full],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fcf-protection=full"]) + + dnl stack-clash-protection does not work properly when building for Windows. + dnl We use the test case from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90458 + dnl to determine if it can be enabled. + AX_CHECK_COMPILE_FLAG([-fstack-clash-protection],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-clash-protection"],[],["-O0"], + [AC_LANG_SOURCE([[class D {public: unsigned char buf[32768];}; int main() {D d; return 0;}]])]) + dnl When enable_debug is yes, all optimizations are disabled. dnl However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning. dnl Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes. |