X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=m4%2Fax_harden_compiler_flags.m4;h=e33d41c96e8061cfae01a8f5d183ad929844653c;hb=3347080c209fd333955a73b2798be4f98b84d27f;hp=b847432141366f6df4e08269e55e5e286c37a770;hpb=168937e6c8d09d126458a4b698ce46f6e9560cf2;p=awesomized%2Flibmemcached

diff --git a/m4/ax_harden_compiler_flags.m4 b/m4/ax_harden_compiler_flags.m4
index b8474321..e33d41c9 100644
--- a/m4/ax_harden_compiler_flags.m4
+++ b/m4/ax_harden_compiler_flags.m4
@@ -1,14 +1,17 @@
 # ===========================================================================
-#      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
 #
-#   Any compiler flag that "hardens" or tests code.
+#   Any compiler flag that "hardens" or tests code. C99 is assumed.
 #
 #   NOTE: Implementation based on AX_APPEND_FLAG.
 #
@@ -45,28 +48,169 @@
 #  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#serial 1
-
-AC_DEFUN([AX_HARDEN_COMPILER_FLAGS],
-[AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
-AC_REQUIRE([AX_APPEND_FLAG])
-AC_REQUIRE([AX_CHECK_LINK_FLAG])
-AX_APPEND_COMPILE_FLAGS([-O2])
-AX_APPEND_COMPILE_FLAGS([-Werror])
-AX_APPEND_COMPILE_FLAGS([-Wall])
-AX_APPEND_COMPILE_FLAGS([-Wextra])
-AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized])
-AX_APPEND_COMPILE_FLAGS([-Wsign-compare])
-AX_APPEND_COMPILE_FLAGS([-Wunused-result])
-AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
-AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
-AX_APPEND_COMPILE_FLAGS([-fstack-protector-all])
-AX_APPEND_COMPILE_FLAGS([-ggdb])
-AX_APPEND_COMPILE_FLAGS([-fstack-protector-all])
-AX_APPEND_COMPILE_FLAGS([-Wstack-protector])
-AX_APPEND_COMPILE_FLAGS([-fwrapv])
-AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2])
-AX_APPEND_COMPILE_FLAGS([--param],[ssp-buffer-size=1])
-AX_CHECK_LINK_FLAG([-Werror])
-AX_CHECK_LINK_FLAG([-z relro -z now])
-])dnl AX_HARDEN_COMPILER_FLAGS
+# The Following flags are not checked for
+# -Wdeclaration-after-statement is counter to C99
+# AX_APPEND_COMPILE_FLAGS([-std=c++11]) -- Not ready yet
+# 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 3
+
+  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])
+
+      ax_append_compile_flags_extra=
+      AS_IF([test "$CLANG" = "yes"],[ax_append_compile_flags_extra="-Werror"])
+
+      AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+          AX_CHECK_LINK_FLAG([-Werror])
+          ax_append_compile_flags_extra=
+          ])
+      AX_CHECK_LINK_FLAG([-z relro -z now],,[$ax_append_compile_flags_extra])
+      AX_CHECK_LINK_FLAG([-pie],,[$ax_append_compile_flags_extra])
+      ])
+
+  AC_DEFUN([AX_HARDEN_CC_COMPILER_FLAGS], [
+      AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
+      AC_REQUIRE([AX_HARDEN_LINKER_FLAGS])
+
+      AC_LANG_PUSH([C])
+      CFLAGS=
+
+      AX_APPEND_COMPILE_FLAGS([-g])
+      AS_IF([test "$ax_enable_debug" = yes], [
+        AX_APPEND_COMPILE_FLAGS([-ggdb],,[$ax_append_compile_flags_extra])
+        AX_APPEND_COMPILE_FLAGS([-O0],,[$ax_append_compile_flags_extra])
+        ],[
+        AX_APPEND_COMPILE_FLAGS([-O2],,[$ax_append_compile_flags_extra])
+        ])
+
+      ac_cv_warnings_as_errors=no
+      AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+        AX_APPEND_COMPILE_FLAGS([-Werror],,[$ax_append_compile_flags_extra])
+        AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_flags_extra])
+        ac_cv_warnings_as_errors=yes
+        ],[
+        AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_flags_extra])
+        ])
+
+      AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-std=c99],,[$ax_append_compile_flags_extra])
+      dnl Anything below this comment please keep sorted.
+      AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast],,[$ax_append_compile_flags_extra])
+      dnl Not in use -Wc++-compat
+      AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmissing-prototypes],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wnested-externs],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wold-style-definition],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Woverride-init],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wpointer-sign],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wredundant-decls],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wstrict-prototypes],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_flags_extra])
+      AC_LANG_POP
+
+      ])
+
+  AC_DEFUN([AX_HARDEN_CXX_COMPILER_FLAGS], [
+      AC_REQUIRE([AX_HARDEN_CC_COMPILER_FLAGS])
+      AC_LANG_PUSH([C++])
+      CXXFLAGS=
+
+      AX_APPEND_COMPILE_FLAGS([-g],,[$ax_append_compile_flags_extra])
+      AS_IF([test "$ax_enable_debug" = yes], [
+        AX_APPEND_COMPILE_FLAGS([-O0],,[$ax_append_compile_flags_extra])
+        AX_APPEND_COMPILE_FLAGS([-ggdb],,[$ax_append_compile_flags_extra])
+        ],[
+        AX_APPEND_COMPILE_FLAGS([-O2],,[$ax_append_compile_flags_extra])
+        AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2],,[$ax_append_compile_flags_extra])
+        ])
+
+      AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+        AX_APPEND_COMPILE_FLAGS([-Werror],,[$ax_append_compile_flags_extra])
+        AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_flags_extra])
+        ],[
+        AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_flags_extra])
+        ])
+
+      AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_flags_extra])
+      dnl Anything below this comment please keep sorted.
+      AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wctor-dtor-privacy],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wredundant-decls],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wc++11-compat],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_flags_extra])
+      AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_flags_extra])
+      AC_LANG_POP
+  ])
+
+  AC_DEFUN([AX_HARDEN_COMPILER_FLAGS], [
+      AC_REQUIRE([AX_HARDEN_CXX_COMPILER_FLAGS],,[$ax_append_compile_flags_extra])
+      ])
+
+  AC_DEFUN([AX_CC_OTHER_FLAGS], [
+      AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
+      AC_REQUIRE([AX_HARDEN_LINKER_FLAGS])
+
+      AC_LANG_PUSH([C])
+      AX_APPEND_COMPILE_FLAGS([-pipe],,[$ax_append_compile_flags_extra])
+      AC_LANG_POP
+      ])