160 lines
5.5 KiB
CMake
160 lines
5.5 KiB
CMake
###############################################################################
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if (__nc_warnings)
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return ()
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endif ()
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set (__nc_warnings TRUE)
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###############################################################################
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include ("${CMAKE_CURRENT_LIST_DIR}/compile_flag.cmake")
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###############################################################################
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append_compile_flag(-Wall)
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append_compile_flag(-Wextra)
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append_compile_flag(-Wno-pragmas)
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# -------------------------------------------------------------------------
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# General warnings
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append_compile_flag(-Wbool-compare)
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append_compile_flag(-Wcast-align)
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append_compile_flag(-Wcast-qual)
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append_compile_flag(-Wdisabled-optimization)
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append_compile_flag(-Wfloat-conversion)
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append_compile_flag(-Wfloat-equal)
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append_compile_flag(-Wno-aggressive-loop-optimizations)
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#append_compile_flag(-Wnoexcept) # Wow this can be annoying when combined with Werror
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append_compile_flag(-Wnon-virtual-dtor)
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append_compile_flag(-Wparentheses) # Wparenthesis detects assignment in conditionals...
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append_compile_flag(-Wpointer-arith)
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# redundant-decls would be useful, but it specifically clashes with GCC
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# intrinsics under msys2 where the builtin and headers define them with
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# different linkages.
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#append_compile_flag(-Wredundant-decls)
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append_compile_flag(-Wshadow)
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append_compile_flag(-Wsign-compare)
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append_compile_flag(-Wsign-promo)
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append_compile_flag(-Wstrict-aliasing)
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#append_compile_flag(-Wstrict-overflow)
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append_compile_flag(-Wtype-limits)
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append_compile_flag(-Wunused-but-set-variable)
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append_compile_flag(-Wunused-parameter)
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append_compile_flag(-Wpessimizing-move)
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# Don't use -Wswitch-enum, it's the same as -Wswitch but also warns if you use
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# a default. Just don't use a default if that's something you want to catch.
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append_compile_flag(-Wswitch)
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# dont use unsafe-loop-optimisations as there are too many false positives
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# with language primitives like range-for.
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# append_compile_flag(-Wunsafe-loop-optimizations)
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# gcc warnings with unknown version
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append_compile_flag(-Wsized-deallocation)
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# gcc-6.1.0 warnings
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append_compile_flag(-Wshift-negative-value)
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append_compile_flag(-Wnull-dereference)
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append_compile_flag(-Wduplicated-cond)
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# useless-cast isn't usable on gcc-6.0 or gcc-6.1 due to spurious warnings
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# see gcc#70844
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append_compile_flag(-Wuseless-cast)
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# gcc 7 warnings
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append_compile_flag(-Wduplicated-branches)
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append_compile_flag(-Wrestrict)
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append_compile_flag(-Wregister)
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append_compile_flag(-Wdangling-else)
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append_compile_flag(-Walloc-zero)
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append_compile_flag(-Walloca)
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append_compile_flag(-Wnonnull)
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append_compile_flag(-Waligned-new)
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append_compile_flag(-Wno-implicit-fallthrough)
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# clang 3.7.1 warnings
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append_compile_flag(-Wshorten-64-to-32)
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append_compile_flag(-Wdeprecated)
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append_compile_flag(-Wcovered-switch-default)
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append_compile_flag(-Wcovered-switch-default)
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append_compile_flag(-Wno-gnu-string-literal-operator-template)
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# gcc 8.1
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append_compile_flag(-Wmultistatement-macros)
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append_compile_flag(-Wcast-align=strict)
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append_compile_flag(-Wold-style-cast)
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append_compile_flag(-Wmissing-field-initializers)
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# clang 12
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append_compile_flag(-Wcast-function-type)
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append_compile_flag(-Wstring-concatenation)
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append_compile_flag(-Wtautological-unsigned-char-zero-compare)
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append_compile_flag(-Wtautological-value-range-compare)
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# clang 14
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append_compile_flag(-Wbitwise-instead-of-logical)
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append_compile_flag(-Wunaligned-access)
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append_compile_flag(-Wunreachable-code-fallthrough)
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# gcc 13
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append_compile_flag(-Wdangling-reference)
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# gcc 14
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append_compile_flag(-Welaborated-enum-base)
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#append_compile_flag(-Wnrvo)
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append_compile_flag(-Walloc-size)
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# -------------------------------------------------------------------------
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# Required extensions
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#AX_APPEND_COMPILE_FLAGS([-Wgnu-flexible-array-union-member], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-c99-extensions], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-vla-extension], [], [-Werror])
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append_compile_flag(-Wno-vla)
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append_compile_flag(-Wno-multichar)
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append_compile_flag(-Wno-c99-designator)
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#AS_IF([test "x$ax_cv_cxx_compiler_vendor" != "xgnu"], [
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# AX_APPEND_COMPILE_FLAGS([-Wno-c99-extensions], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-flexible-array-extensions], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-gnu-conditional-omitted-operand], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-gnu-empty-struct], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-gnu-flexible-array-union-member], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-gnu-zero-variadic-macro-arguments], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-vla-extension], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-zero-length-array], [], [-Werror])
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#])
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# -------------------------------------------------------------------------
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# Excessive warnings
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append_compile_flag(-Wno-missing-braces)
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#AS_IF([test "x$ax_cv_cxx_compiler_vendor" != "xgnu"], [
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# AX_APPEND_COMPILE_FLAGS([-Wno-nested-anon-types], [], [-Werror])
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# AX_APPEND_COMPILE_FLAGS([-Wno-unused-const-variable], [], [-Werror])
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#])
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# -------------------------------------------------------------------------
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option (ADVISORY "enable advisory warnings")
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# Always use suggest-override. It has a low false positive rate and mitigates
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# a possibly significant error.
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append_compile_flag(-Wsuggest-override)
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#append_compile_flag(-Woverloaded-virtual)
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if (ADVISORY)
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append_compile_flag(-Winline)
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append_compile_flag(-Wsuggest-final-types)
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append_compile_flag(-Wsuggest-final-methods)
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append_compile_flag(-Wweak-vtables)
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append_compile_flag(-Wpadded)
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endif()
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