139 lines
4.3 KiB
CMake
139 lines
4.3 KiB
CMake
cmake_minimum_required(VERSION 3.10)
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cmake_policy(PUSH)
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cmake_policy(SET CMP0048 NEW) # project(... VERSION ...) support
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project(volk VERSION
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# VOLK_GENERATE_VERSION
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301
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# VOLK_GENERATE_VERSION
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LANGUAGES C
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)
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# CMake 3.12 changes the default behaviour of option() to leave local variables
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# unchanged if they exist (which we want), but we must work with older CMake versions.
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if(NOT DEFINED VOLK_STATIC_DEFINES)
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set(VOLK_STATIC_DEFINES "" CACHE STRING "Additional defines for building the volk static library, e.g. Vulkan platform defines")
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endif()
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if(NOT DEFINED VOLK_PULL_IN_VULKAN)
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option(VOLK_PULL_IN_VULKAN "Vulkan as a transitive dependency" ON)
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endif()
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if(NOT DEFINED VOLK_INSTALL)
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option(VOLK_INSTALL "Create installation targets" OFF)
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endif()
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if(NOT DEFINED VOLK_HEADERS_ONLY)
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option(VOLK_HEADERS_ONLY "Add interface library only" OFF)
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endif()
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if(NOT DEFINED VULKAN_HEADERS_INSTALL_DIR)
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set(VULKAN_HEADERS_INSTALL_DIR "" CACHE PATH "Where to get the Vulkan headers")
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endif()
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# -----------------------------------------------------
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# Static library
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if(NOT VOLK_HEADERS_ONLY OR VOLK_INSTALL)
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add_library(volk STATIC volk.h volk.c)
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add_library(volk::volk ALIAS volk)
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target_include_directories(volk PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
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$<INSTALL_INTERFACE:include>
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)
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if(VOLK_STATIC_DEFINES)
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target_compile_definitions(volk PUBLIC ${VOLK_STATIC_DEFINES})
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endif()
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if (NOT WIN32)
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target_link_libraries(volk PUBLIC ${CMAKE_DL_LIBS})
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endif()
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endif()
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# -----------------------------------------------------
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# Interface library
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add_library(volk_headers INTERFACE)
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add_library(volk::volk_headers ALIAS volk_headers)
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target_include_directories(volk_headers INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
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$<INSTALL_INTERFACE:include>
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)
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if (NOT WIN32)
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target_link_libraries(volk_headers INTERFACE ${CMAKE_DL_LIBS})
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endif()
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# -----------------------------------------------------
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# Vulkan transitive dependency
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if(VOLK_PULL_IN_VULKAN)
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# Try an explicit CMake variable first, then any Vulkan paths
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# discovered by FindVulkan.cmake, then the $VULKAN_SDK environment
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# variable if nothing else works.
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if(VULKAN_HEADERS_INSTALL_DIR)
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message("volk: using VULKAN_HEADERS_INSTALL_DIR option")
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set(VOLK_INCLUDES "${VULKAN_HEADERS_INSTALL_DIR}/include")
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else()
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# If CMake has the FindVulkan module and it works, use it.
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find_package(Vulkan QUIET)
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if(Vulkan_INCLUDE_DIRS)
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message("volk: using Vulkan_INCLUDE_DIRS from FindVulkan module")
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set(VOLK_INCLUDES "${Vulkan_INCLUDE_DIRS}")
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elseif(DEFINED ENV{VULKAN_SDK})
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message("volk: using VULKAN_SDK environment variable")
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set(VOLK_INCLUDES "$ENV{VULKAN_SDK}/include")
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endif()
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endif()
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if(VOLK_INCLUDES)
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if(TARGET volk)
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target_include_directories(volk PUBLIC "${VOLK_INCLUDES}")
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endif()
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target_include_directories(volk_headers INTERFACE "${VOLK_INCLUDES}")
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endif()
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endif()
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# -----------------------------------------------------
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# Installation
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if(VOLK_INSTALL)
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include(GNUInstallDirs)
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set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/volk)
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# Install files
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install(FILES volk.h volk.c DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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# Install library target and add it and any dependencies to export set.
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install(TARGETS volk volk_headers
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EXPORT volk-targets
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LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
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ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
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RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
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)
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# Actually write exported config w/ imported targets
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install(EXPORT volk-targets
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FILE volkTargets.cmake
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NAMESPACE volk::
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DESTINATION ${INSTALL_CONFIGDIR}
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)
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# Create a ConfigVersion.cmake file:
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include(CMakePackageConfigHelpers)
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write_basic_package_version_file(
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${CMAKE_CURRENT_BINARY_DIR}/volkConfigVersion.cmake
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COMPATIBILITY AnyNewerVersion
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)
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# Configure config file
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configure_package_config_file(${CMAKE_CURRENT_LIST_DIR}/cmake/volkConfig.cmake.in
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${CMAKE_CURRENT_BINARY_DIR}/volkConfig.cmake
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INSTALL_DESTINATION ${INSTALL_CONFIGDIR}
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)
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# Install the fully generated config and configVersion files
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install(FILES
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${CMAKE_CURRENT_BINARY_DIR}/volkConfig.cmake
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${CMAKE_CURRENT_BINARY_DIR}/volkConfigVersion.cmake
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DESTINATION ${INSTALL_CONFIGDIR}
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)
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endif()
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cmake_policy(POP)
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