X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=m4%2Fax_harden_compiler_flags.m4;h=3ab549388e813cc364e2bf2c672efd9b4656a9d4;hb=879ce2d055d3c4ebdbfa50e26877ee5948b04365;hp=3d5eb2e3500d0fdfb26c8a88124eb2239128df7c;hpb=ac46009041afe0134d3719e7ab6bc467d136ac0b;p=awesomized%2Flibmemcached diff --git a/m4/ax_harden_compiler_flags.m4 b/m4/ax_harden_compiler_flags.m4 index 3d5eb2e3..3ab54938 100644 --- a/m4/ax_harden_compiler_flags.m4 +++ b/m4/ax_harden_compiler_flags.m4 @@ -1,3 +1,4 @@ +# vim:expandtab:shiftwidth=2:tabstop=2:smarttab: # =========================================================================== # https://github.com/BrianAker/ddm4/ # =========================================================================== @@ -10,11 +11,9 @@ # # 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 @@ -44,53 +43,118 @@ # 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 @@ -99,17 +163,13 @@ AC_DEFUN([_HARDEN_CC_COMPILER_FLAGS], _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], @@ -118,7 +178,6 @@ AC_DEFUN([_HARDEN_CC_COMPILER_FLAGS], _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]) @@ -126,133 +185,167 @@ AC_DEFUN([_HARDEN_CC_COMPILER_FLAGS], _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 ]) +