diff options
| -rw-r--r-- | configure.ac | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index d25e0f4496..715b65f091 100644 --- a/configure.ac +++ b/configure.ac @@ -753,12 +753,17 @@ 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="$HARDENED_CXXFLAGS -fstack-protector-all"]) - AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[ - AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[ - HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -U_FORTIFY_SOURCE" + # When enable_debug is yes, all optimizations are disabled. + # However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning. + # Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes. + if test x$enable_debug != xyes; then + AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[ + AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[ + HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -U_FORTIFY_SOURCE" + ]) + HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -D_FORTIFY_SOURCE=2" ]) - HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -D_FORTIFY_SOURCE=2" - ]) + fi AX_CHECK_LINK_FLAG([[-Wl,--dynamicbase]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--dynamicbase"]) AX_CHECK_LINK_FLAG([[-Wl,--nxcompat]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--nxcompat"]) |