forked from mpusz/mp-units
95 lines
3.8 KiB
CMake
95 lines
3.8 KiB
CMake
# The MIT License (MIT)
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#
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# Copyright (c) 2018 Mateusz Pusz
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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cmake_minimum_required(VERSION 3.23)
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project(mp-units VERSION 2.2.0 LANGUAGES CXX)
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set(projectPrefix MP_UNITS_)
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list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
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include(CheckCXXFeatureSupported)
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include(AddMPUnitsModule)
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include(GNUInstallDirs)
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# project options
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option(${projectPrefix}BUILD_CXX_MODULES "Add C++ modules to the list of default targets" OFF)
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message(STATUS "${projectPrefix}BUILD_CXX_MODULES: ${${projectPrefix}BUILD_CXX_MODULES}")
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option(${projectPrefix}AS_SYSTEM_HEADERS "Exports library as system headers" OFF)
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message(STATUS "${projectPrefix}AS_SYSTEM_HEADERS: ${${projectPrefix}AS_SYSTEM_HEADERS}")
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option(${projectPrefix}USE_FMTLIB "Enables usage of fmtlib instead of the 'std::format' facilities" OFF)
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message(STATUS "${projectPrefix}USE_FMTLIB: ${${projectPrefix}USE_FMTLIB}")
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# C++ features
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check_cxx_feature_supported(__cpp_explicit_this_parameter ${projectPrefix}EXPLICIT_THIS_PARAMETER_SUPPORTED)
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check_cxx_feature_supported("__cpp_constexpr >= 202211L" ${projectPrefix}STATIC_CONSTEXPR_VARS_IN_CONSTEXPR_FUNCTIONS)
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if(${projectPrefix}EXPLICIT_THIS_PARAMETER_SUPPORTED)
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message(STATUS "API/ABI: `quantity_spec` uses explicit `this` parameter in its definition")
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else()
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message(STATUS "API/ABI: `quantity_spec` uses CRTP in its definition")
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endif()
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if(${projectPrefix}STATIC_CONSTEXPR_VARS_IN_CONSTEXPR_FUNCTIONS)
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message(STATUS "API/ABI: `unit_symbol()` returns `std::string_view`")
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else()
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message(STATUS "API/ABI: `unit_symbol()` returns `fixed_string`")
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endif()
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# C++ modules
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if(${projectPrefix}BUILD_CXX_MODULES)
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if(CMAKE_VERSION VERSION_LESS "3.28.1")
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message(FATAL_ERROR, "CMake versions before 3.28.1 do not support C++ modules properly")
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endif()
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cmake_minimum_required(VERSION 3.28.1)
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# # none of the below seems to work
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# cmake_policy(VERSION 3.28.1)
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# cmake_policy(SET CMP0155 NEW)
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set(${projectPrefix}TARGET_SCOPE "PUBLIC")
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else()
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set(${projectPrefix}TARGET_SCOPE "INTERFACE")
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endif()
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# components/modules
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add_subdirectory(core)
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add_subdirectory(systems)
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# project-wide wrapper
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add_mp_units_module(mp-units mp-units DEPENDENCIES mp-units::core mp-units::systems MODULE_INTERFACE_UNIT mp-units.cpp)
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# local build
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export(EXPORT mp-unitsTargets NAMESPACE mp-units::)
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configure_file("mp-unitsConfig.cmake" "." COPYONLY)
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include(CMakePackageConfigHelpers)
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write_basic_package_version_file(mp-unitsConfigVersion.cmake COMPATIBILITY SameMajorVersion)
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# installation
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install(EXPORT mp-unitsTargets DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mp-units NAMESPACE mp-units::)
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install(FILES mp-unitsConfig.cmake ${CMAKE_CURRENT_BINARY_DIR}/mp-unitsConfigVersion.cmake
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mp-units
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)
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