+# vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
# ===========================================================================
# https://github.com/BrianAker/ddm4/
# ===========================================================================
#
# Any compiler flag that "hardens" or tests code. C99 is assumed.
#
-# NOTE: Implementation based on AX_APPEND_FLAG.
-#
# LICENSE
#
-# Copyright (C) 2012 Brian Aker
+# Copyright (C) 2012-2019 Brian Aker
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Notes:
+# We do not test for c99 or c++11, that is out of scope.
# The Following flags are not checked for
# -Wdeclaration-after-statement is counter to C99
-# _APPEND_COMPILE_FLAGS_ERROR([-std=c++11]) -- Not ready yet
-# _APPEND_COMPILE_FLAGS_ERROR([-pedantic]) --
-# ? _APPEND_COMPILE_FLAGS_ERROR([-Wlong-long]) -- Don't turn on for
-# compatibility issues memcached_stat_st
+# _APPEND_COMPILE_FLAGS_ERROR([-pedantic])
-#serial 6
+#serial 17
+AC_DEFUN([_SET_SANITIZE_FLAGS],
+ [AS_IF([test "x$MINGW" != xyes],[
+ AS_IF([test "x$enable_shared" = "xyes"],
+ [AS_CASE([$ax_harden_sanitize],
+ [thread],[
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=thread])],
+ [address],[
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=address])],
+ [rest],[
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-omit-frame-pointer])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=integer])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=memory])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=alignment])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=bool])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=bounds])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=enum])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=float-cast-overflow])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=float-divide-by-zero])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=integer-divide-by-zero])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=null])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=object-size])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=return])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=shift])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=signed-integer-overflow])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=unreachable])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=unsigned-integer-overflow])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=vla-bound])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=vptr])])
+ ])
+ ])
+ ])
+
+# Note: Should this be LIBS or LDFLAGS?
AC_DEFUN([_APPEND_LINK_FLAGS_ERROR],
- [AC_REQUIRE([AX_APPEND_LINK_FLAGS])
- AX_APPEND_LINK_FLAGS([$1],[LIB],[-Werror])
+ [AX_APPEND_LINK_FLAGS([$1],[LDFLAGS],[-Werror])
])
AC_DEFUN([_APPEND_COMPILE_FLAGS_ERROR],
- [AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
- AX_APPEND_COMPILE_FLAGS([$1],,[-Werror])
+ [AX_APPEND_COMPILE_FLAGS([$1],,[-Werror])
])
+# Everything above this does the heavy lifting, while what follows does the specifics.
+
AC_DEFUN([_HARDEN_LINKER_FLAGS],
- [_APPEND_LINK_FLAGS_ERROR([-z relro -z now])
- _APPEND_LINK_FLAGS_ERROR([-pie])
- AS_IF([test "x$ac_cv_warnings_as_errors" = xyes],
- [_APPEND_LINK_FLAGS_ERROR([-Werror])])
+ [AS_IF([test "$ax_cv_c_compiler_vendor" != "clang"],
+ [_APPEND_LINK_FLAGS_ERROR(["-z relro" "-z now"])
+ AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
+ [_APPEND_LINK_FLAGS_ERROR([-rdynamic])
+# AX_APPEND_LINK_FLAGS([--coverage])])
+ AS_IF([test "x$ac_cv_warnings_as_errors" = xyes],[AX_APPEND_LINK_FLAGS([-Werror])])
+ ])
+ ])
+
+AC_DEFUN([_AX_HARDEN_SANITIZE],
+ [AC_REQUIRE([AX_DEBUG])
+ AC_ARG_WITH([sanitize],
+ [AS_HELP_STRING([--with-sanitize],
+ [Enable sanitize flag for compiler if it supports them @<:@default=no@:>@])],
+ [AS_CASE([$with_sanitize],
+ [thread],[
+ ax_harden_sanitize='thread'],
+ [address],[
+ ax_harden_sanitize='address'],
+ [ax_harden_sanitize='rest'])
+ ],
+ [AS_IF([test "x$ax_enable_debug" = xyes],[ax_harden_sanitize='rest'])])
])
AC_DEFUN([_HARDEN_CC_COMPILER_FLAGS],
[AC_LANG_PUSH([C])dnl
- _APPEND_COMPILE_FLAGS_ERROR([-g])
AS_IF([test "x$ax_enable_debug" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-ggdb])
- _APPEND_COMPILE_FLAGS_ERROR([-O0])],
- [_APPEND_COMPILE_FLAGS_ERROR([-O2])])
+ [
+ #_APPEND_COMPILE_FLAGS_ERROR([-H])
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-g3])
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-eliminate-unused-debug-types])
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-omit-frame-pointer])
+ ],[
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-O2])
+ ])
+
+ AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])
+# _APPEND_COMPILE_FLAGS_ERROR([--coverage])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])],
+ [_APPEND_COMPILE_FLAGS_ERROR([-Wno-unknown-pragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])])
+
+ AS_IF([test "$ax_cv_c_compiler_vendor" = "clang"],[_APPEND_COMPILE_FLAGS_ERROR([-Qunused-arguments])])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])
_APPEND_COMPILE_FLAGS_ERROR([-Wall])
_APPEND_COMPILE_FLAGS_ERROR([-Wextra])
- _APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Weverything])
_APPEND_COMPILE_FLAGS_ERROR([-Wthis-test-should-fail])
- _APPEND_COMPILE_FLAGS_ERROR([-std=c99])
# Anything below this comment please keep sorted.
- _APPEND_COMPILE_FLAGS_ERROR([--param=ssp-buffer-size=1])
# _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-format-attribute])
_APPEND_COMPILE_FLAGS_ERROR([-Wno-attributes])
_APPEND_COMPILE_FLAGS_ERROR([-Waddress])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wvarargs])
_APPEND_COMPILE_FLAGS_ERROR([-Warray-bounds])
_APPEND_COMPILE_FLAGS_ERROR([-Wbad-function-cast])
# Not in use -Wc++-compat
_APPEND_COMPILE_FLAGS_ERROR([-Wfloat-equal])
_APPEND_COMPILE_FLAGS_ERROR([-Wformat-security])
_APPEND_COMPILE_FLAGS_ERROR([-Wformat=2])
- _APPEND_COMPILE_FLAGS_ERROR([-Wlogical-op])
- _APPEND_COMPILE_FLAGS_ERROR([-Wmaybe-uninitialized])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat-y2k])
_APPEND_COMPILE_FLAGS_ERROR([-Wmissing-field-initializers])
AS_IF([test "x$MINGW" = xyes],
[_APPEND_COMPILE_FLAGS_ERROR([-Wno-missing-noreturn])],
[_APPEND_COMPILE_FLAGS_ERROR([-Wmissing-noreturn])])
_APPEND_COMPILE_FLAGS_ERROR([-Wmissing-prototypes])
_APPEND_COMPILE_FLAGS_ERROR([-Wnested-externs])
- _APPEND_COMPILE_FLAGS_ERROR([-Wnormalized=id])
- _APPEND_COMPILE_FLAGS_ERROR([-Wold-style-definition])
- _APPEND_COMPILE_FLAGS_ERROR([-Woverride-init])
_APPEND_COMPILE_FLAGS_ERROR([-Wpointer-arith])
_APPEND_COMPILE_FLAGS_ERROR([-Wpointer-sign])
AS_IF([test "x$MINGW" = xyes],
_APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=pure])
_APPEND_COMPILE_FLAGS_ERROR([-Wno-redundant-decls])],
[_APPEND_COMPILE_FLAGS_ERROR([-Wredundant-decls])])
-
_APPEND_COMPILE_FLAGS_ERROR([-Wshadow])
_APPEND_COMPILE_FLAGS_ERROR([-Wshorten-64-to-32])
_APPEND_COMPILE_FLAGS_ERROR([-Wsign-compare])
_APPEND_COMPILE_FLAGS_ERROR([-Wstrict-prototypes])
_APPEND_COMPILE_FLAGS_ERROR([-Wswitch-enum])
_APPEND_COMPILE_FLAGS_ERROR([-Wundef])
+
_APPEND_COMPILE_FLAGS_ERROR([-Wunused])
_APPEND_COMPILE_FLAGS_ERROR([-Wunused-result])
_APPEND_COMPILE_FLAGS_ERROR([-Wunused-variable])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-parameter])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-local-typedefs])
_APPEND_COMPILE_FLAGS_ERROR([-Wwrite-strings])
- _APPEND_COMPILE_FLAGS_ERROR([-floop-parallelize-all])
_APPEND_COMPILE_FLAGS_ERROR([-fwrapv])
_APPEND_COMPILE_FLAGS_ERROR([-fmudflapt])
+ _APPEND_COMPILE_FLAGS_ERROR([-pipe])
+ AS_IF([test "x$MINGW" = xyes],
+ [],
+ [_APPEND_COMPILE_FLAGS_ERROR([-fPIE -pie])])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wsizeof-pointer-memaccess])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpacked])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wlong-long])
+ _APPEND_COMPILE_FLAGS_ERROR([ftrapv])
+ # Stop error when using -pie on library builds
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-unused-command-line-argument])
+# GCC 4.5 removed this.
+# _APPEND_COMPILE_FLAGS_ERROR([-Wunreachable-code])
+
+ _SET_SANITIZE_FLAGS
AS_IF([test "x$ax_enable_debug" = xno],
[AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])
- AS_IF([test "x$ac_c_gcc_recent" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
- _APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])
- _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector])
- _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector-all])
- ])])])
+ [AS_IF([test "x${host_os}" != "xmingw"],
+ [AS_IF([test "x$ac_c_gcc_recent" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
+ #_APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])
+ #_APPEND_COMPILE_FLAGS_ERROR([-fstack-protector --param=ssp-buffer-size=4])
+ _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector-all])
+ ])])])])
- AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])],
- [_APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])])
+ AS_IF([test "x$ac_cv_warnings_as_errors" = xyes],
+ [AX_APPEND_COMPILE_FLAGS([-Werror])])
AC_LANG_POP([C])
])
AC_DEFUN([_HARDEN_CXX_COMPILER_FLAGS],
[AC_LANG_PUSH([C++])
- AC_REQUIRE([_APPEND_COMPILE_FLAGS_ERROR])
+ AS_IF([test "x$ax_enable_debug" = xyes],
+ [CXXFLAGS=''
+ #_APPEND_COMPILE_FLAGS_ERROR([-H])
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-g3])
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-inline])
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-eliminate-unused-debug-types])
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-omit-frame-pointer])
+ ],[
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-O2])
+ ])
- _APPEND_COMPILE_FLAGS_ERROR([-g])
- AS_IF([test "x$ax_enable_debug" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-O0])
- _APPEND_COMPILE_FLAGS_ERROR([-ggdb])],
- [_APPEND_COMPILE_FLAGS_ERROR([-O2])])
+ AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])
+# _APPEND_COMPILE_FLAGS_ERROR([--coverage])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])],
+ [_APPEND_COMPILE_FLAGS_ERROR([-Wno-unknown-pragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])])
- AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])],
- [_APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])])
+ AS_IF([test "$ax_cv_c_compiler_vendor" = "clang"],[_APPEND_COMPILE_FLAGS_ERROR([-Qunused-arguments])])
- _APPEND_COMPILE_FLAGS_ERROR([-Wall])
- _APPEND_COMPILE_FLAGS_ERROR([-Wextra])
- _APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])
- _APPEND_COMPILE_FLAGS_ERROR([-Wthis-test-should-fail])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wall])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wextra])
+ _APPEND_COMPILE_FLAGS_ERROR([-Weverything])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wthis-test-should-fail])
# Anything below this comment please keep sorted.
- _APPEND_COMPILE_FLAGS_ERROR([--param=ssp-buffer-size=1])
# _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-format-attribute])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-attributes])
- _APPEND_COMPILE_FLAGS_ERROR([-Waddress])
- _APPEND_COMPILE_FLAGS_ERROR([-Warray-bounds])
- _APPEND_COMPILE_FLAGS_ERROR([-Wchar-subscripts])
- _APPEND_COMPILE_FLAGS_ERROR([-Wcomment])
- _APPEND_COMPILE_FLAGS_ERROR([-Wctor-dtor-privacy])
- _APPEND_COMPILE_FLAGS_ERROR([-Wfloat-equal])
- _APPEND_COMPILE_FLAGS_ERROR([-Wformat=2])
- _APPEND_COMPILE_FLAGS_ERROR([-Wmaybe-uninitialized])
- _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-field-initializers])
- _APPEND_COMPILE_FLAGS_ERROR([-Wlogical-op])
- _APPEND_COMPILE_FLAGS_ERROR([-Wnon-virtual-dtor])
- _APPEND_COMPILE_FLAGS_ERROR([-Wnormalized=id])
- _APPEND_COMPILE_FLAGS_ERROR([-Woverloaded-virtual])
- _APPEND_COMPILE_FLAGS_ERROR([-Wpointer-arith])
- AS_IF([test "x$MINGW" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=const])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-missing-noreturn])
- _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-noreturn])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=noreturn])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-error=suggest-attribute=noreturn])
- _APPEND_COMPILE_FLAGS_ERROR([-Wno-redundant-decls])],
- [_APPEND_COMPILE_FLAGS_ERROR([-Wredundant-decls])])
- _APPEND_COMPILE_FLAGS_ERROR([-Wshadow])
- _APPEND_COMPILE_FLAGS_ERROR([-Wshorten-64-to-32])
- _APPEND_COMPILE_FLAGS_ERROR([-Wsign-compare])
- _APPEND_COMPILE_FLAGS_ERROR([-Wstrict-overflow=1])
- _APPEND_COMPILE_FLAGS_ERROR([-Wswitch-enum])
- _APPEND_COMPILE_FLAGS_ERROR([-Wundef])
- _APPEND_COMPILE_FLAGS_ERROR([-Wc++11-compat])
- _APPEND_COMPILE_FLAGS_ERROR([-Wunused])
- _APPEND_COMPILE_FLAGS_ERROR([-Wunused-result])
- _APPEND_COMPILE_FLAGS_ERROR([-Wunused-variable])
- _APPEND_COMPILE_FLAGS_ERROR([-Wwrite-strings])
- _APPEND_COMPILE_FLAGS_ERROR([-Wformat-security])
- _APPEND_COMPILE_FLAGS_ERROR([-floop-parallelize-all])
- _APPEND_COMPILE_FLAGS_ERROR([-fwrapv])
- _APPEND_COMPILE_FLAGS_ERROR([-fmudflapt])
-
- AS_IF([test "x$ax_enable_debug" = xno],
- [AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])
- AS_IF([test "x$ac_c_gcc_recent" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
- _APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])
- _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector])
- _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector-all])
- ])])])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-attributes])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wvarargs])
+ _APPEND_COMPILE_FLAGS_ERROR([-Waddress])
+ _APPEND_COMPILE_FLAGS_ERROR([-Warray-bounds])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wchar-subscripts])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wcomment])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wctor-dtor-privacy])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wfloat-equal])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat=2])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat-y2k])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmaybe-uninitialized])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-field-initializers])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wlogical-op])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wnon-virtual-dtor])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wnormalized=id])
+ _APPEND_COMPILE_FLAGS_ERROR([-Woverloaded-virtual])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpointer-arith])
+ AS_IF([test "x$MINGW" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=const])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-missing-noreturn])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-noreturn])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=noreturn])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-error=suggest-attribute=noreturn])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-redundant-decls])],
+ [_APPEND_COMPILE_FLAGS_ERROR([-Wredundant-decls])])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wshadow])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wshorten-64-to-32])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wsign-compare])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wstrict-overflow=1])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wswitch-enum])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wtrampolines])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wundef])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunsafe-loop-optimizations])
+ _APPEND_COMPILE_FLAGS_ERROR([-funsafe-loop-optimizations])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wc++11-compat])
+# Disabled due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55837
+# _APPEND_COMPILE_FLAGS_ERROR([-Weffc++])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wold-style-cast])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wclobbered])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-result])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-variable])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-parameter])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunused-local-typedefs])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wwrite-strings])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat-security])
+ _APPEND_COMPILE_FLAGS_ERROR([-fwrapv])
+ _APPEND_COMPILE_FLAGS_ERROR([-fmudflapt])
+ _APPEND_COMPILE_FLAGS_ERROR([-pipe])
+ AS_IF([test "x$MINGW" = xyes],
+ [],
+ [_APPEND_COMPILE_FLAGS_ERROR([-fPIE -pie])])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wsizeof-pointer-memaccess])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpacked])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wlong-long])
+# GCC 4.5 removed this.
+# _APPEND_COMPILE_FLAGS_ERROR([-Wunreachable-code])
- AS_IF([test "x$ac_cv_warnings_as_errors" = xyes],
- [_APPEND_COMPILE_FLAGS_ERROR([-Werror])])
- AC_LANG_POP([C++])
- ])
+ AS_IF([test "x$ax_enable_debug" = xno],
+ [AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
+ [AS_IF([test "x${host_os}" != "xmingw"],
+ [AS_IF([test "x$ac_c_gcc_recent" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
+ #_APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])
+ #_APPEND_COMPILE_FLAGS_ERROR([-fstack-protector --param=ssp-buffer-size=4])
+ _APPEND_COMPILE_FLAGS_ERROR([-fstack-protector-all])
+ ])])])])
- AC_DEFUN([_CC_OTHER_FLAGS],
- [AC_REQUIRE([_APPEND_COMPILE_FLAGS_ERROR])
+ _SET_SANITIZE_FLAGS
- AC_LANG_PUSH([C])
- _APPEND_COMPILE_FLAGS_ERROR([-pipe])
- AC_LANG_POP([C])
- ])
+ AS_IF([test "x$ac_cv_warnings_as_errors" = xyes],
+ [AX_APPEND_COMPILE_FLAGS([-Werror])])
+ AC_LANG_POP([C++])
+ ])
# All of the heavy lifting happens in _HARDEN_LINKER_FLAGS,
-# _HARDEN_CC_COMPILER_FLAGS, _HARDEN_CXX_COMPILER_FLAGS, _CC_OTHER_FLAGS
+# _HARDEN_CC_COMPILER_FLAGS, _HARDEN_CXX_COMPILER_FLAGS
AC_DEFUN([AX_HARDEN_COMPILER_FLAGS],
[AC_PREREQ([2.63])dnl
- AC_REQUIRE([AX_APPEND_LINK_FLAGS])
+ AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([AX_COMPILER_VERSION])
AC_REQUIRE([AX_DEBUG])
- AC_REQUIRE([AX_VCS_CHECKOUT])
+ AC_REQUIRE([AX_ASSERT])
+ _AX_HARDEN_SANITIZE
AC_REQUIRE([gl_VISIBILITY])
AS_IF([test -n "$CFLAG_VISIBILITY"],[CPPFLAGS="$CPPFLAGS $CFLAG_VISIBILITY"])
- AC_CACHE_CHECK([if all warnings into errors],[ac_cv_warnings_as_errors],
- [AS_IF([test "x$ac_cv_vcs_checkout" = xyes],[ac_cv_warnings_as_errors=yes],
- [ac_cv_warnings_as_errors=no])
- ])
-
- AC_REQUIRE([_HARDEN_LINKER_FLAGS])
- AC_REQUIRE([_HARDEN_CC_COMPILER_FLAGS])
- AC_REQUIRE([_HARDEN_CXX_COMPILER_FLAGS])
- AC_REQUIRE([_CC_OTHER_FLAGS])
+ _HARDEN_LINKER_FLAGS
+ _HARDEN_CC_COMPILER_FLAGS
+ _HARDEN_CXX_COMPILER_FLAGS
])
+
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