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77 lines
2.6 KiB
CMake
77 lines
2.6 KiB
CMake
include(HandleFlags)
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# Warning flags ===============================================================
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function(cxx_add_warning_flags target enable_werror enable_pedantic)
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target_compile_definitions(${target} PUBLIC -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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if (MSVC)
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# -W4 is the cl.exe/clang-cl equivalent of -Wall. (In cl.exe and clang-cl,
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# -Wall is equivalent to -Weverything in GCC style compiler drivers.)
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target_add_compile_flags_if_supported(${target} PRIVATE -W4)
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else()
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target_add_compile_flags_if_supported(${target} PRIVATE -Wall)
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endif()
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# TODO: Should -Wconversion be enabled?
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target_add_compile_flags_if_supported(${target} PRIVATE
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-Wextra
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-Wnewline-eof
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-Wshadow
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-Wwrite-strings
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-Wno-unused-parameter
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-Wno-long-long
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-Werror=return-type
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-Wextra-semi
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-Wundef
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-Wunused-template
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-Wformat-nonliteral
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)
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if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
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target_add_compile_flags_if_supported(${target} PRIVATE
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-Wno-user-defined-literals
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-Wno-covered-switch-default
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-Wno-suggest-override
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)
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if (LIBCXX_TARGETING_CLANG_CL)
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target_add_compile_flags_if_supported(${target} PRIVATE
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-Wno-c++98-compat
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-Wno-c++98-compat-pedantic
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-Wno-c++11-compat
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-Wno-undef
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-Wno-reserved-id-macro
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-Wno-gnu-include-next
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-Wno-gcc-compat # For ignoring "'diagnose_if' is a clang extension" warnings
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-Wno-zero-as-null-pointer-constant # FIXME: Remove this and fix all occurrences.
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-Wno-deprecated-dynamic-exception-spec # For auto_ptr
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-Wno-sign-conversion
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-Wno-old-style-cast
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-Wno-deprecated # FIXME: Remove this and fix all occurrences.
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-Wno-shift-sign-overflow # FIXME: Why do we need this with clang-cl but not clang?
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-Wno-double-promotion # FIXME: remove me
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)
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endif()
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elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
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target_add_compile_flags_if_supported(${target} PRIVATE
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-Wstrict-aliasing=2
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-Wstrict-overflow=4
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-Wno-attributes
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-Wno-literal-suffix
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-Wno-c++14-compat
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-Wno-noexcept-type
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-Wno-suggest-override
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)
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endif()
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if (${enable_werror})
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target_add_compile_flags_if_supported(${target} PRIVATE -Werror)
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target_add_compile_flags_if_supported(${target} PRIVATE -WX)
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else()
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# TODO(EricWF) Remove this. We shouldn't be suppressing errors when -Werror is
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# added elsewhere.
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target_add_compile_flags_if_supported(${target} PRIVATE -Wno-error)
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endif()
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if (${enable_pedantic})
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target_add_compile_flags_if_supported(${target} PRIVATE -pedantic)
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endif()
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endfunction()
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