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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wmaybe-uninitialized])
- AX_APPEND_COMPILE_FLAGS_ERROR([-Wmissing-field-initializers])
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- [AX_APPEND_COMPILE_FLAGS_ERROR([-Wredundant-decls])])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wshadow])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wsign-compare])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wstrict-prototypes])
- AX_APPEND_COMPILE_FLAGS_ERROR([-Wswitch-enum])
- AX_APPEND_COMPILE_FLAGS_ERROR([-Wundef])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wunused-result])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-fmudflapt])
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- [AX_APPEND_COMPILE_FLAGS_ERROR([-Werror])])
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- AX_APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])
- AX_APPEND_COMPILE_FLAGS_ERROR([-Wthis-test-should-fail])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wchar-subscripts])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wcomment])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wfloat-equal])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat-security])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat=2])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wformat-y2k])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wlogical-op])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmaybe-uninitialized])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-field-initializers])
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+ [_APPEND_COMPILE_FLAGS_ERROR([-Wmissing-noreturn])])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wmissing-prototypes])
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+ _APPEND_COMPILE_FLAGS_ERROR([-Wnormalized=id])
+ _APPEND_COMPILE_FLAGS_ERROR([-Woverride-init])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpointer-arith])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpointer-sign])
+ AS_IF([test "x$MINGW" = xyes],
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+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-suggest-attribute=noreturn])
+ _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-overflow=1])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wstrict-prototypes])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wswitch-enum])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wtrampolines])
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+ _APPEND_COMPILE_FLAGS_ERROR([-Wunsafe-loop-optimizations])
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+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=integer])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=thread])
+ _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])
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+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=return])
+ _APPEND_COMPILE_FLAGS_ERROR([-fsanitize=shift])
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+ _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])
+ ])
+ ])
+ ])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wclobbered])
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+ _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])
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+ _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([-Wunreachable-code])
+
+ AS_IF([test "x$ax_enable_debug" = xno],
+ [AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
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+ [AS_IF([test "x$ac_c_gcc_recent" = xyes],
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+ #_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$ac_cv_warnings_as_errors" = xyes],
+ [AX_APPEND_FLAG([-Werror])])
+
+ AC_LANG_POP([C])
+ ])
+
+AC_DEFUN([_HARDEN_CXX_COMPILER_FLAGS],
+ [AC_LANG_PUSH([C++])
+ AC_REQUIRE([_APPEND_COMPILE_FLAGS_ERROR])
+
+ AS_IF([test "x$ax_enable_debug" = xyes],
+ [CXXFLAGS=''
+ _APPEND_COMPILE_FLAGS_ERROR([-H])
+ _APPEND_COMPILE_FLAGS_ERROR([-ggdb])
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-O0]),
+ _APPEND_COMPILE_FLAGS_ERROR([-fno-omit-frame-pointer])
+ ],[
+ _APPEND_COMPILE_FLAGS_ERROR([-g])
+ _APPEND_COMPILE_FLAGS_ERROR([-O2])
+ ])
+
+ AS_IF([test "x$ac_cv_vcs_checkout" = xyes],
+ [_APPEND_COMPILE_FLAGS_ERROR([-fstack-check])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wpragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wunknown-pragmas])],
+ [_APPEND_COMPILE_FLAGS_ERROR([-Wno-unknown-pragmas])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wno-pragmas])])
+
+ AS_IF([test "$CXX" = "clang++"],[_APPEND_COMPILE_FLAGS_ERROR([-Qunused-arguments])])
+
+ _APPEND_COMPILE_FLAGS_ERROR([-Wall])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wextra])
+ _APPEND_COMPILE_FLAGS_ERROR([-Weverything])
+ _APPEND_COMPILE_FLAGS_ERROR([-Wthis-test-should-fail])