83 lines
3.1 KiB
CMake
83 lines
3.1 KiB
CMake
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#######################################################################
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# The Embedded Template Library (https://www.etlcpp.com/)
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#######################################################################
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cmake_minimum_required(VERSION 3.5.0)
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include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/helpers.cmake)
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set(MSG_PREFIX "etl |")
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determine_version_with_git(${GIT_DIR_LOOKUP_POLICY})
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if(NOT ETL_VERSION)
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determine_version_with_file("version.txt")
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endif()
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project(etl VERSION ${ETL_VERSION} LANGUAGES CXX)
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option(BUILD_TESTS "Build unit tests" OFF)
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option(NO_STL "No STL" OFF)
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# There is a bug on old gcc versions for some targets that causes all system headers
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# to be implicitly wrapped with 'extern "C"'
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# Users can add set(NO_SYSTEM_INCLUDE ON) to their top level CMakeLists.txt to work around this.
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option(NO_SYSTEM_INCLUDE "Do not include with -isystem" OFF)
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if (NO_SYSTEM_INCLUDE)
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set(INCLUDE_SPECIFIER "")
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else()
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set(INCLUDE_SPECIFIER "SYSTEM")
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endif()
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add_library(${PROJECT_NAME} INTERFACE)
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# This allows users which use the add_subdirectory or FetchContent
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# to use the same target as users which use find_package
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add_library(etl::etl ALIAS ${PROJECT_NAME})
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include(GNUInstallDirs)
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target_include_directories(${PROJECT_NAME} ${INCLUDE_SPECIFIER} INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
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)
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target_link_libraries(${PROJECT_NAME} INTERFACE)
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# only install if top level project
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if(${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME})
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# Steps here based on excellent guide: https://dominikberner.ch/cmake-interface-lib/
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# Which also details all steps
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include(CMakePackageConfigHelpers)
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install(TARGETS ${PROJECT_NAME}
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EXPORT ${PROJECT_NAME}Targets
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ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
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LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
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RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
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)
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if(ETL_VERSION)
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# Generate the package configuration files using CMake provided macros
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write_basic_package_version_file(
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"${PROJECT_NAME}ConfigVersion.cmake"
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COMPATIBILITY SameMajorVersion
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ARCH_INDEPENDENT
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)
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endif()
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configure_package_config_file(
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"${PROJECT_SOURCE_DIR}/cmake/${PROJECT_NAME}Config.cmake.in"
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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INSTALL_DESTINATION
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${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake)
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# Install target file, then package configuration files, and finally the headers
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install(EXPORT ${PROJECT_NAME}Targets
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FILE ${PROJECT_NAME}Targets.cmake
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NAMESPACE ${PROJECT_NAME}::
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DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake)
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install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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"${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
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DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake)
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install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/etl DESTINATION include)
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endif()
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if (BUILD_TESTS)
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enable_testing()
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add_subdirectory(test)
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endif()
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