Abseil Common Libraries (C++) (grcp 依赖)
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96 lines
3.9 KiB
96 lines
3.9 KiB
# See absl/copts/copts.py and absl/copts/generate_copts.py |
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include(GENERATED_AbseilCopts) |
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set(ABSL_DEFAULT_LINKOPTS "") |
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if (BUILD_SHARED_LIBS AND MSVC) |
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set(ABSL_BUILD_DLL TRUE) |
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) |
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else() |
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set(ABSL_BUILD_DLL FALSE) |
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endif() |
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if(APPLE AND CMAKE_CXX_COMPILER_ID MATCHES [[Clang]]) |
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# Some CMake targets (not known at the moment of processing) could be set to |
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# compile for multiple architectures as specified by the OSX_ARCHITECTURES |
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# property, which is target-specific. We should neither inspect nor rely on |
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# any CMake property or variable to detect an architecture, in particular: |
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# |
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# - CMAKE_OSX_ARCHITECTURES |
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# is just an initial value for OSX_ARCHITECTURES; set too early. |
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# |
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# - OSX_ARCHITECTURES |
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# is a per-target property; targets could be defined later, and their |
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# properties could be modified any time later. |
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# |
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# - CMAKE_SYSTEM_PROCESSOR |
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# does not reflect multiple architectures at all. |
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# |
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# When compiling for multiple architectures, a build system can invoke a |
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# compiler either |
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# |
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# - once: a single command line for multiple architectures (Ninja build) |
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# - twice: two command lines per each architecture (Xcode build system) |
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# |
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# If case of Xcode, it would be possible to set an Xcode-specific attributes |
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# like XCODE_ATTRIBUTE_OTHER_CPLUSPLUSFLAGS[arch=arm64] or similar. |
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# |
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# In both cases, the viable strategy is to pass all arguments at once, allowing |
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# the compiler to dispatch arch-specific arguments to a designated backend. |
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set(ABSL_RANDOM_RANDEN_COPTS "") |
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foreach(_arch IN ITEMS "x86_64" "arm64") |
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string(TOUPPER "${_arch}" _arch_uppercase) |
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string(REPLACE "X86_64" "X64" _arch_uppercase ${_arch_uppercase}) |
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foreach(_flag IN LISTS ABSL_RANDOM_HWAES_${_arch_uppercase}_FLAGS) |
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list(APPEND ABSL_RANDOM_RANDEN_COPTS "-Xarch_${_arch}" "${_flag}") |
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endforeach() |
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endforeach() |
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# If a compiler happens to deal with an argument for a currently unused |
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# architecture, it will warn about an unused command line argument. |
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option(ABSL_RANDOM_RANDEN_COPTS_WARNING OFF |
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"Warn if one of ABSL_RANDOM_RANDEN_COPTS is unused") |
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if(ABSL_RANDOM_RANDEN_COPTS AND NOT ABSL_RANDOM_RANDEN_COPTS_WARNING) |
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list(APPEND ABSL_RANDOM_RANDEN_COPTS "-Wno-unused-command-line-argument") |
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endif() |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|AMD64") |
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if (MSVC) |
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}") |
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else() |
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}") |
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endif() |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm.*|aarch64") |
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if (CMAKE_SIZEOF_VOID_P STREQUAL "8") |
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM64_FLAGS}") |
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elseif(CMAKE_SIZEOF_VOID_P STREQUAL "4") |
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM32_FLAGS}") |
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else() |
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message(WARNING "Value of CMAKE_SIZEOF_VOID_P (${CMAKE_SIZEOF_VOID_P}) is not supported.") |
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endif() |
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else() |
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set(ABSL_RANDOM_RANDEN_COPTS "") |
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endif() |
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if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") |
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set(ABSL_DEFAULT_COPTS "${ABSL_GCC_FLAGS}") |
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set(ABSL_TEST_COPTS "${ABSL_GCC_FLAGS};${ABSL_GCC_TEST_FLAGS}") |
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elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang") # MATCHES so we get both Clang and AppleClang |
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if(MSVC) |
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# clang-cl is half MSVC, half LLVM |
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set(ABSL_DEFAULT_COPTS "${ABSL_CLANG_CL_FLAGS}") |
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set(ABSL_TEST_COPTS "${ABSL_CLANG_CL_FLAGS};${ABSL_CLANG_CL_TEST_FLAGS}") |
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else() |
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set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}") |
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set(ABSL_TEST_COPTS "${ABSL_LLVM_FLAGS};${ABSL_LLVM_TEST_FLAGS}") |
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endif() |
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") |
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set(ABSL_DEFAULT_COPTS "${ABSL_MSVC_FLAGS}") |
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set(ABSL_TEST_COPTS "${ABSL_MSVC_FLAGS};${ABSL_MSVC_TEST_FLAGS}") |
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set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}") |
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else() |
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message(WARNING "Unknown compiler: ${CMAKE_CXX_COMPILER}. Building with no default flags") |
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set(ABSL_DEFAULT_COPTS "") |
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set(ABSL_TEST_COPTS "") |
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endif() |
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set(ABSL_CXX_STANDARD "${CMAKE_CXX_STANDARD}")
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