Abseil Common Libraries (C++) (grcp 依赖)
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154 lines
4.6 KiB
154 lines
4.6 KiB
"""absl specific copts. |
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Flags specified here must not impact ABI. Code compiled with and without these |
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opts will be linked together, and in some cases headers compiled with and |
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without these options will be part of the same program. |
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""" |
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GCC_FLAGS = [ |
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"-Wall", |
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"-Wextra", |
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"-Wcast-qual", |
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"-Wconversion-null", |
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"-Wmissing-declarations", |
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"-Woverlength-strings", |
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"-Wpointer-arith", |
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"-Wunused-local-typedefs", |
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"-Wunused-result", |
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"-Wvarargs", |
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"-Wvla", # variable-length array |
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"-Wwrite-strings", |
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# Google style does not use unsigned integers, though STL containers |
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# have unsigned types. |
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"-Wno-sign-compare", |
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] |
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GCC_TEST_FLAGS = [ |
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"-Wno-conversion-null", |
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"-Wno-missing-declarations", |
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"-Wno-sign-compare", |
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"-Wno-unused-function", |
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"-Wno-unused-parameter", |
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"-Wno-unused-private-field", |
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] |
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# Docs on single flags is preceded by a comment. |
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# Docs on groups of flags is preceded by ###. |
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LLVM_FLAGS = [ |
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# All warnings are treated as errors by implicit -Werror flag |
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"-Wall", |
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"-Wextra", |
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"-Weverything", |
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# Abseil does not support C++98 |
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"-Wno-c++98-compat-pedantic", |
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# Turns off all implicit conversion warnings. Most are re-enabled below. |
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"-Wno-conversion", |
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"-Wno-covered-switch-default", |
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"-Wno-deprecated", |
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"-Wno-disabled-macro-expansion", |
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"-Wno-double-promotion", |
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### |
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# Turned off as they include valid C++ code. |
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"-Wno-comma", |
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"-Wno-extra-semi", |
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"-Wno-packed", |
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"-Wno-padded", |
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### |
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"-Wno-float-conversion", |
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"-Wno-float-equal", |
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"-Wno-format-nonliteral", |
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# Too aggressive: warns on Clang extensions enclosed in Clang-only |
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# compilation paths. |
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"-Wno-gcc-compat", |
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### |
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# Some internal globals are necessary. Don't do this at home. |
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"-Wno-global-constructors", |
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"-Wno-exit-time-destructors", |
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### |
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"-Wno-nested-anon-types", |
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"-Wno-non-modular-include-in-module", |
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"-Wno-old-style-cast", |
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# Warns on preferred usage of non-POD types such as string_view |
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"-Wno-range-loop-analysis", |
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"-Wno-reserved-id-macro", |
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"-Wno-shorten-64-to-32", |
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"-Wno-switch-enum", |
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"-Wno-thread-safety-negative", |
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"-Wno-undef", |
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"-Wno-unknown-warning-option", |
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"-Wno-unreachable-code", |
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# Causes warnings on include guards |
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"-Wno-unused-macros", |
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"-Wno-weak-vtables", |
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### |
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# Implicit conversion warnings turned off by -Wno-conversion |
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# which are re-enabled below. |
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"-Wbitfield-enum-conversion", |
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"-Wbool-conversion", |
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"-Wconstant-conversion", |
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"-Wenum-conversion", |
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"-Wint-conversion", |
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"-Wliteral-conversion", |
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"-Wnon-literal-null-conversion", |
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"-Wnull-conversion", |
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"-Wobjc-literal-conversion", |
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"-Wno-sign-conversion", |
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"-Wstring-conversion", |
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### |
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] |
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LLVM_TEST_FLAGS = [ |
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"-Wno-c99-extensions", |
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"-Wno-missing-noreturn", |
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"-Wno-missing-prototypes", |
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"-Wno-null-conversion", |
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"-Wno-shadow", |
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"-Wno-shift-sign-overflow", |
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"-Wno-sign-compare", |
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"-Wno-unused-function", |
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"-Wno-unused-member-function", |
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"-Wno-unused-parameter", |
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"-Wno-unused-private-field", |
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"-Wno-unused-template", |
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"-Wno-used-but-marked-unused", |
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"-Wno-zero-as-null-pointer-constant", |
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] |
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MSVC_FLAGS = [ |
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"/W3", |
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"/WX", |
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"/wd4005", # macro-redefinition |
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"/wd4068", # unknown pragma |
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"/wd4244", # conversion from 'type1' to 'type2', possible loss of data |
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"/wd4267", # conversion from 'size_t' to 'type', possible loss of data |
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"/wd4800", # forcing value to bool 'true' or 'false' (performance warning) |
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"/DNOMINMAX", # Don't define min and max macros (windows.h) |
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"/DWIN32_LEAN_AND_MEAN", # Don't bloat namespace with incompatible winsock versions. |
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"/D_CRT_SECURE_NO_WARNINGS", # Don't warn about usage of insecure C functions |
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] |
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MSVC_TEST_FLAGS = [ |
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"/wd4018", # signed/unsigned mismatch |
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"/wd4101", # unreferenced local variable |
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"/wd4503", # decorated name length exceeded, name was truncated |
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] |
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# /Wall with msvc includes unhelpful warnings such as C4711, C4710, ... |
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ABSL_DEFAULT_COPTS = select({ |
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"//absl:windows": MSVC_FLAGS, |
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"//absl:llvm_compiler": LLVM_FLAGS, |
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"//conditions:default": GCC_FLAGS, |
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}) |
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# in absence of modules (--compiler=gcc or -c opt), cc_tests leak their copts |
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# to their (included header) dependencies and fail to build outside absl |
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ABSL_TEST_COPTS = ABSL_DEFAULT_COPTS + select({ |
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"//absl:windows": MSVC_TEST_FLAGS, |
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"//absl:llvm_compiler": LLVM_TEST_FLAGS, |
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"//conditions:default": GCC_TEST_FLAGS, |
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}) |
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ABSL_EXCEPTIONS_FLAG = select({ |
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"//absl:windows": ["/U_HAS_EXCEPTIONS", "/D_HAS_EXCEPTIONS=1", "/EHsc"], |
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"//conditions:default": ["-fexceptions"], |
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})
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