X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=m4%2Fax_harden_compiler_flags.m4;h=247665caf8f5de88fea94133a343c50c7d23fa60;hb=386280f69a9b5050751a88addb42568e09efb44b;hp=af3ee7ff13fe54ffb12722b54ff8537253c4cfe0;hpb=e4adb623298d4ffc84a58ba34dc63dde3733a02f;p=m6w6%2Flibmemcached diff --git a/m4/ax_harden_compiler_flags.m4 b/m4/ax_harden_compiler_flags.m4 index af3ee7ff..247665ca 100644 --- a/m4/ax_harden_compiler_flags.m4 +++ b/m4/ax_harden_compiler_flags.m4 @@ -56,108 +56,124 @@ # 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 4 - - 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]) - - dnl If we are inside of VCS we append -Werror, otherwise we just use it to test other flags - AX_HARDEN_LIB= - ax_append_compile_link_flags_extra= - AS_IF([test "x$ac_cv_vcs_checkout" = "xyes"],[ - AX_CHECK_LINK_FLAG([-Werror],[ - AX_HARDEN_LIB="-Werror $AX_HARDEN_LIB" - ]) - ],[ - AX_CHECK_LINK_FLAG([-Werror],[ - ax_append_compile_link_flags_extra='-Werror' - ]) +#serial 5 + +AC_DEFUN([AX_HARDEN_LINKER_FLAGS], + [AC_PREREQ([2.63])dnl + AC_REQUIRE([AX_CHECK_LINK_FLAG]) + AC_REQUIRE([AX_VCS_CHECKOUT]) + AC_REQUIRE([AX_DEBUG]) + AC_REQUIRE([AX_CXX_COMPILER_VERSION]) + + dnl If we are inside of VCS we append -Werror, otherwise we just use it to test other flags + AX_HARDEN_LIB= + ax_append_compile_link_flags_extra= + AS_IF([test "x$ac_cv_vcs_checkout" = "xyes"], + [AX_CHECK_LINK_FLAG([-Werror], + [AX_HARDEN_LIB="-Werror $AX_HARDEN_LIB"]) + ], + [AX_CHECK_LINK_FLAG([-Werror],[ + ax_append_compile_link_flags_extra='-Werror' ]) + ]) - AX_CHECK_LINK_FLAG([-z relro -z now],[ - AX_HARDEN_LIB="-z relro -z now $AX_HARDEN_LIB" - ],,[$ax_append_compile_link_flags_extra]) + AX_CHECK_LINK_FLAG([-z relro -z now], + [AX_HARDEN_LIB="-z relro -z now $AX_HARDEN_LIB"],, + [$ax_append_compile_link_flags_extra]) - AX_CHECK_LINK_FLAG([-pie],[ - AX_HARDEN_LIB="-pie $AX_HARDEN_LIB" - ],,[$ax_append_compile_link_flags_extra]) + AX_CHECK_LINK_FLAG([-pie], + [AX_HARDEN_LIB="-pie $AX_HARDEN_LIB"],, + [$ax_append_compile_link_flags_extra]) - LIB="$LIB $AX_HARDEN_LIB" - ]) + LIB="$LIB $AX_HARDEN_LIB" + ]) - AC_DEFUN([AX_HARDEN_CC_COMPILER_FLAGS], [ - AC_REQUIRE([AX_APPEND_COMPILE_FLAGS]) - AC_REQUIRE([AX_HARDEN_LINKER_FLAGS]) + AC_DEFUN([AX_HARDEN_CC_COMPILER_FLAGS], + [AC_PREREQ([2.63])dnl + AC_REQUIRE([AX_APPEND_COMPILE_FLAGS]) + AC_REQUIRE([AX_HARDEN_LINKER_FLAGS]) - AC_LANG_PUSH([C]) + AC_LANG_PUSH([C]) - ac_cv_warnings_as_errors=no - ax_append_compile_cflags_extra= - AS_IF([test "$ac_cv_vcs_checkout" = "yes"],[ - AX_APPEND_COMPILE_FLAGS([-Werror]) - ac_cv_warnings_as_errors=yes - ],[ - AX_APPEND_COMPILE_FLAGS([-Werror],[ax_append_compile_cflags_extra]) - ]) + ac_cv_warnings_as_errors=no + ax_append_compile_cflags_extra= + AS_IF([test "$ac_cv_vcs_checkout" = "yes"],[ + AX_APPEND_COMPILE_FLAGS([-Werror]) + ac_cv_warnings_as_errors=yes + ],[ + AX_APPEND_COMPILE_FLAGS([-Werror],[ax_append_compile_cflags_extra]) + ]) - AX_APPEND_COMPILE_FLAGS([-g]) - AS_IF([test "$ax_enable_debug" = "yes"], [ - AX_APPEND_COMPILE_FLAGS([-ggdb],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-O0],,[$ax_append_compile_cflags_extra]) - ],[ - AX_APPEND_COMPILE_FLAGS([-O2],,[$ax_append_compile_cflags_extra]) - ]) + AX_APPEND_COMPILE_FLAGS([-g]) + AS_IF([test "$ax_enable_debug" = "yes"], [ + AX_APPEND_COMPILE_FLAGS([-ggdb],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-O0],,[$ax_append_compile_cflags_extra]) + ],[ + AX_APPEND_COMPILE_FLAGS([-O2],,[$ax_append_compile_cflags_extra]) + ]) + + AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_cflags_extra]) - - AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-std=c99],,[$ax_append_compile_cflags_extra]) - dnl Anything below this comment please keep sorted. - AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast],,[$ax_append_compile_cflags_extra]) - dnl Not in use -Wc++-compat - AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-std=c99],,[$ax_append_compile_cflags_extra]) + dnl Anything below this comment please keep sorted. +AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_cflags_extra]) + dnl -Wmissing-format-attribute + AX_APPEND_COMPILE_FLAGS([-Wno-attributes],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast],,[$ax_append_compile_cflags_extra]) + dnl Not in use -Wc++-compat + AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_cflags_extra]) + AS_IF([test "$MINGW" = "yes"],[ + AX_APPEND_COMPILE_FLAGS([-Wno-missing-noreturn],,[$ax_append_compile_cflags_extra]) + ],[ AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wmissing-prototypes],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wnested-externs],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wold-style-definition],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Woverride-init],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wpointer-sign],,[$ax_append_compile_cflags_extra]) + ]) + AX_APPEND_COMPILE_FLAGS([-Wmissing-prototypes],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wnested-externs],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wold-style-definition],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Woverride-init],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wpointer-sign],,[$ax_append_compile_cflags_extra]) + AS_IF([test "$MINGW" = "yes"],[ + AX_APPEND_COMPILE_FLAGS([-Wno-suggest-attribute=const],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-suggest-attribute=noreturn],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-suggest-attribute=pure],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-redundant-decls],,[$ax_append_compile_cflags_extra]) + ],[ AX_APPEND_COMPILE_FLAGS([-Wredundant-decls],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wstrict-prototypes],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_cflags_extra]) - AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_cflags_extra]) - AC_LANG_POP ]) + AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wstrict-prototypes],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_cflags_extra]) + AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_cflags_extra]) +AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_cflags_extra]) + AC_LANG_POP + ]) - AC_DEFUN([AX_HARDEN_CXX_COMPILER_FLAGS], [ + AC_DEFUN([AX_HARDEN_CXX_COMPILER_FLAGS], + [AC_PREREQ([2.63])dnl AC_REQUIRE([AX_HARDEN_CC_COMPILER_FLAGS]) AC_LANG_PUSH([C++]) @@ -169,7 +185,7 @@ ]) AX_APPEND_COMPILE_FLAGS([-g],,[$ax_append_compile_cxxflags_extra]) - AS_IF([test "$ax_enable_debug" = "yes" ], [ + AS_IF([test "$ax_enable_debug" = "yes"], [ AX_APPEND_COMPILE_FLAGS([-O0],,[$ax_append_compile_cxxflags_extra]) AX_APPEND_COMPILE_FLAGS([-ggdb],,[$ax_append_compile_cxxflags_extra]) ],[ @@ -177,59 +193,75 @@ AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2],,[$ax_append_compile_cxxflags_extra]) ]) - AS_IF([test "$ac_cv_vcs_checkout" = "yes" ], [ - AX_APPEND_COMPILE_FLAGS([-Werror],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_cxxflags_extra]) - ],[ - AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_cxxflags_extra]) - ]) + AS_IF([test "$ac_cv_vcs_checkout" = "yes"], [ + AX_APPEND_COMPILE_FLAGS([-Werror],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-fstack-check],,[$ax_append_compile_cxxflags_extra]) + ],[ + AX_APPEND_COMPILE_FLAGS([-Wno-pragmas],,[$ax_append_compile_cxxflags_extra]) + ]) - AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_cxxflags_extra]) - dnl Anything below this comment please keep sorted. - AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wctor-dtor-privacy],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wall],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wextra],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunknown-pragmas],,[$ax_append_compile_cxxflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wthis-test-should-fail],,[$ax_append_compile_cxxflags_extra]) + dnl Anything below this comment please keep sorted. +AX_APPEND_COMPILE_FLAGS([--param=ssp-buffer-size=1],,[$ax_append_compile_cxxflags_extra]) + dnl -Wmissing-format-attribute + AX_APPEND_COMPILE_FLAGS([-Wno-attributes],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Waddress],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Warray-bounds],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wcomment],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wctor-dtor-privacy],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wfloat-equal],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wformat=2],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized],,[$ax_append_compile_cxxflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers],,[$ax_append_compile_cxxflags_extra]) + AS_IF([test "$MINGW" = "yes"],[ + AX_APPEND_COMPILE_FLAGS([-Wno-missing-noreturn],,[$ax_append_compile_cxxflags_extra]) + ],[ AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_cxxflags_extra]) + ]) + AX_APPEND_COMPILE_FLAGS([-Wlogical-op],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wnormalized=id],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual],,[$ax_append_compile_cxxflags_extra]) +AX_APPEND_COMPILE_FLAGS([-Wpointer-arith],,[$ax_append_compile_cxxflags_extra]) + AS_IF([test "$MINGW" = "yes"],[ + AX_APPEND_COMPILE_FLAGS([-Wno-suggest-attribute=const],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-suggest-attribute=noreturn],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-error=suggest-attribute=noreturn],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wno-redundant-decls],,[$ax_append_compile_cxxflags_extra]) + ],[ AX_APPEND_COMPILE_FLAGS([-Wredundant-decls],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wc++11-compat],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_cxxflags_extra]) - AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_cxxflags_extra]) - AC_LANG_POP + ]) + AX_APPEND_COMPILE_FLAGS([-Wshadow],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wsign-compare],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wswitch-enum],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wundef],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wc++11-compat],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused-result],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wunused-variable],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wwrite-strings],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-Wformat-security],,[$ax_append_compile_cxxflags_extra]) + AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all],,[$ax_append_compile_cxxflags_extra]) +AX_APPEND_COMPILE_FLAGS([-fwrapv],,[$ax_append_compile_cxxflags_extra]) + AC_LANG_POP ]) - AC_DEFUN([AX_HARDEN_COMPILER_FLAGS], [ + AC_DEFUN([AX_HARDEN_COMPILER_FLAGS], + [AC_PREREQ([2.63])dnl AC_REQUIRE([AX_HARDEN_CXX_COMPILER_FLAGS]) AC_REQUIRE([AX_CC_OTHER_FLAGS]) gl_VISIBILITY - AS_IF([ test -n "$CFLAG_VISIBILITY" ], [ CPPFLAGS="$CPPFLAGS $CFLAG_VISIBILITY" ]) + AS_IF([test -n "$CFLAG_VISIBILITY"], [ CPPFLAGS="$CPPFLAGS $CFLAG_VISIBILITY" ]) ]) - AC_DEFUN([AX_CC_OTHER_FLAGS], [ + AC_DEFUN([AX_CC_OTHER_FLAGS], + [AC_PREREQ([2.63])dnl AC_REQUIRE([AX_APPEND_COMPILE_FLAGS]) AC_REQUIRE([AX_HARDEN_CC_COMPILER_FLAGS])