# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_append_flag.html
+# https://github.com/BrianAker/ddm4/
# ===========================================================================
#
# SYNOPSIS
#
-# AX_HARDEN_COMPILER_FLAGS
+# AX_HARDEN_COMPILER_FLAGS, AX_HARDEN_LINKER_FLAGS, AX_HARDEN_CC_COMPILER_FLAGS, AX_HARDEN_CXX_COMPILER_FLAGS
#
# DESCRIPTION
#
# AX_APPEND_COMPILE_FLAGS([-pedantic]) -- ?
# AX_APPEND_COMPILE_FLAGS([-Wstack-protector]) -- Issues on 32bit compile
# AX_APPEND_COMPILE_FLAGS([-fstack-protector-all]) -- Issues on 32bit compile
+# AX_APPEND_COMPILE_FLAGS([-Wlong-long]) -- Don't turn on for compatibility issues memcached_stat_st
-#serial 1
+#serial 2
- AC_DEFUN([AX_HARDEN_C_COMPILER_FLAGS], [
- AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
+ AC_DEFUN([AX_HARDEN_LINKER_FLAGS], [
AC_REQUIRE([AX_CHECK_LINK_FLAG])
AC_REQUIRE([AX_VCS_CHECKOUT])
+ AC_REQUIRE([AX_DEBUG])
+ AC_REQUIRE([AX_CXX_COMPILER_VERSION])
+
+ AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+ AX_CHECK_LINK_FLAG([-Werror])
+ ])
+ AX_CHECK_LINK_FLAG([-z relro -z now])
+ AX_CHECK_LINK_FLAG([-pie])
+ ])
+
+ AC_DEFUN([AX_HARDEN_CC_COMPILER_FLAGS], [
+ AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
+ AC_REQUIRE([AX_HARDEN_LINKER_FLAGS])
AC_LANG_PUSH([C])
- AX_APPEND_COMPILE_FLAGS([-O2])
- AX_APPEND_COMPILE_FLAGS([-Werror])
+ CFLAGS=
+
+ AX_APPEND_COMPILE_FLAGS([-g])
+ AS_IF([test "$ax_enable_debug" = yes], [
+ AX_APPEND_COMPILE_FLAGS([-ggdb])
+ AX_APPEND_COMPILE_FLAGS([-O0])
+ ],[
+ AX_APPEND_COMPILE_FLAGS([-O2])
+ ])
+
+ ac_cv_warnings_as_errors=no
+ AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+ AX_APPEND_COMPILE_FLAGS([-Werror])
+ AX_APPEND_COMPILE_FLAGS([-Wpragmas])
+ ac_cv_warnings_as_errors=yes
+ ],[
+ AX_APPEND_COMPILE_FLAGS([-Wno-pragmas])
+ ])
+
AX_APPEND_COMPILE_FLAGS([-Wall])
AX_APPEND_COMPILE_FLAGS([-Wextra])
AX_APPEND_COMPILE_FLAGS([-std=c99])
+ dnl Anything below this comment please keep sorted.
+ AX_APPEND_COMPILE_FLAGS([--paramssp-buffer-size=1])
+ AX_APPEND_COMPILE_FLAGS([-Waddress])
+ AX_APPEND_COMPILE_FLAGS([-Warray-bounds])
AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast])
+ dnl AX_APPEND_COMPILE_FLAGS([-Wc++-compat])
+ AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts])
+ AX_APPEND_COMPILE_FLAGS([-Wcomment])
+ AX_APPEND_COMPILE_FLAGS([-Wfloat-equal])
+ AX_APPEND_COMPILE_FLAGS([-Wformat-security])
+ AX_APPEND_COMPILE_FLAGS([-Wformat=2])
+ AX_APPEND_COMPILE_FLAGS([-Wlogical-op])
+ AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized])
+ AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers])
+ AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn])
AX_APPEND_COMPILE_FLAGS([-Wmissing-prototypes])
AX_APPEND_COMPILE_FLAGS([-Wnested-externs])
+ AX_APPEND_COMPILE_FLAGS([-Wnormalized=id])
AX_APPEND_COMPILE_FLAGS([-Wold-style-definition])
AX_APPEND_COMPILE_FLAGS([-Woverride-init])
+ AX_APPEND_COMPILE_FLAGS([-Wpointer-arith])
+ AX_APPEND_COMPILE_FLAGS([-Wpointer-sign])
+ AX_APPEND_COMPILE_FLAGS([-Wredundant-decls])
+ AX_APPEND_COMPILE_FLAGS([-Wshadow])
+ AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32])
+ AX_APPEND_COMPILE_FLAGS([-Wsign-compare])
+ AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1])
AX_APPEND_COMPILE_FLAGS([-Wstrict-prototypes])
+ AX_APPEND_COMPILE_FLAGS([-Wswitch-enum])
+ AX_APPEND_COMPILE_FLAGS([-Wundef])
+ AX_APPEND_COMPILE_FLAGS([-Wunused-result])
+ AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
+ AX_APPEND_COMPILE_FLAGS([-Wwrite-strings])
+ AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
+ AX_APPEND_COMPILE_FLAGS([-fwrapv])
AC_LANG_POP
+
])
- AC_DEFUN([AX_HARDEN_CC_COMPILER_FLAGS], [
- AC_REQUIRE([AX_HARDEN_C_COMPILER_FLAGS])
+ AC_DEFUN([AX_HARDEN_CXX_COMPILER_FLAGS], [
+ AC_REQUIRE([AX_HARDEN_CC_COMPILER_FLAGS])
AC_LANG_PUSH([C++])
- AX_APPEND_COMPILE_FLAGS([-O2])
- AX_APPEND_COMPILE_FLAGS([-Werror])
+ CXXFLAGS=
+
+ AX_APPEND_COMPILE_FLAGS([-g])
+ AS_IF([test "$ax_enable_debug" = yes], [
+ AX_APPEND_COMPILE_FLAGS([-O0])
+ AX_APPEND_COMPILE_FLAGS([-ggdb])
+ ],[
+ AX_APPEND_COMPILE_FLAGS([-O2])
+ AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2])
+ ])
+
+ AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+ AX_APPEND_COMPILE_FLAGS([-Werror])
+ AX_APPEND_COMPILE_FLAGS([-Wpragmas])
+ ],[
+ AX_APPEND_COMPILE_FLAGS([-Wno-pragmas])
+ ])
+
AX_APPEND_COMPILE_FLAGS([-Wall])
AX_APPEND_COMPILE_FLAGS([-Wextra])
- AX_APPEND_COMPILE_FLAGS([-Wpragmas])
+ dnl Anything below this comment please keep sorted.
AX_APPEND_COMPILE_FLAGS([--paramssp-buffer-size=1])
- AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2])
AX_APPEND_COMPILE_FLAGS([-Waddress])
AX_APPEND_COMPILE_FLAGS([-Warray-bounds])
AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts])
AX_APPEND_COMPILE_FLAGS([-Wctor-dtor-privacy])
AX_APPEND_COMPILE_FLAGS([-Wfloat-equal])
AX_APPEND_COMPILE_FLAGS([-Wformat=2])
- AX_APPEND_COMPILE_FLAGS([-Wlong-long])
AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized])
AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers])
AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn])
+ AX_APPEND_COMPILE_FLAGS([-Wlogical-op])
AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor])
AX_APPEND_COMPILE_FLAGS([-Wnormalized=id])
AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual])
AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1])
AX_APPEND_COMPILE_FLAGS([-Wswitch-enum])
AX_APPEND_COMPILE_FLAGS([-Wundef])
+ AX_APPEND_COMPILE_FLAGS([-Wc++11-compat])
AX_APPEND_COMPILE_FLAGS([-Wunused-result])
AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
AX_APPEND_COMPILE_FLAGS([-Wwrite-strings])
+ AX_APPEND_COMPILE_FLAGS([-Wformat-security])
AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
AX_APPEND_COMPILE_FLAGS([-fwrapv])
- AX_APPEND_COMPILE_FLAGS([-ggdb])
- AX_CHECK_LINK_FLAG([-Werror])
- AX_CHECK_LINK_FLAG([-z relro -z now])
AC_LANG_POP
])
+
+ AC_DEFUN([AX_HARDEN_COMPILER_FLAGS], [
+ AC_REQUIRE([AX_HARDEN_CXX_COMPILER_FLAGS])
+ ])