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build: overriding of std::format support for clang-17+ with libc++ added

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Mateusz Pusz
2024-06-14 09:00:14 +02:00
parent 05fc1e29c8
commit d746817c66
1 changed files with 8 additions and 9 deletions
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17
src/CMakeLists.txt
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@ -83,16 +83,15 @@ check_cxx_feature_supported(__cpp_lib_format ${projectPrefix}LIB_FORMAT_SUPPORTE
check_cxx_feature_supported("__cpp_constexpr >= 202211L" ${projectPrefix}STATIC_CONSTEXPR_VARS_IN_CONSTEXPR_FUNCTIONS)
check_cxx_feature_supported(__cpp_explicit_this_parameter ${projectPrefix}EXPLICIT_THIS_PARAMETER_SUPPORTED)
# libc++ has a basic supports for std::format but does not set __cpp_lib_format
# https://github.com/llvm/llvm-project/issues/77773
if(NOT ${projectPrefix}LIB_FORMAT_SUPPORTED AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "17" AND ${projectPrefix}LIBCXX)
message(STATUS "Clang 17+ with libc++ detected, overriding `std::format` support")
set(${projectPrefix}LIB_FORMAT_SUPPORTED 1)
endif()
# validate settings
if(NOT ${projectPrefix}API_FREESTANDING
AND "${projectPrefix}API_STD_FORMAT"
AND NOT
(${projectPrefix}LIB_FORMAT_SUPPORTED
# libc++ has a basic supports for std::format but does not set __cpp_lib_format
# https://github.com/llvm/llvm-project/issues/77773
OR (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "17"
AND ${projectPrefix}LIBCXX))
)
if(NOT ${projectPrefix}API_FREESTANDING AND "${projectPrefix}API_STD_FORMAT" AND NOT ${projectPrefix}LIB_FORMAT_SUPPORTED)
message(FATAL_ERROR "`std::format` enabled but not supported")
endif()