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bgfx.cmake/CMakeLists.txt
Sandy Carter 034462fd2a Add option to prefix tool names to avoid conflicts 
For example the shaderc is used by dawn and an installation might want to
prefix bgfx's shaderc with bgfx-shaderc
2023-01-21 16:05:46 -05:00

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CMake
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# bgfx.cmake - bgfx building in cmake
# Written in 2017 by Joshua Brookover <joshua.al.brookover@gmail.com>
#
# To the extent possible under law, the author(s) have dedicated all copyright
# and related and neighboring rights to this software to the public domain
# worldwide. This software is distributed without any warranty.
#
# You should have received a copy of the CC0 Public Domain Dedication along with
# this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
cmake_minimum_required(VERSION 3.6)
project(bgfx)
cmake_policy(SET CMP0054 NEW)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
# Makefile generators on apple need this flag to compile mixed objective/c++
if(APPLE AND NOT XCODE)
set(CMAKE_CXX_FLAGS "-ObjC++")
endif()
if(MSVC AND (MSVC_VERSION GREATER_EQUAL 1914))
add_compile_options("/Zc:__cplusplus")
endif()
include(CMakeDependentOption)
option(BX_AMALGAMATED "Amalgamated bx build for faster compilation" OFF)
option(BX_CONFIG_DEBUG "Log debug messages (default: on in debug)" OFF)
option(BGFX_AMALGAMATED "Amalgamated bgfx build for faster compilation" OFF)
option(BGFX_BUILD_TOOLS "Build bgfx tools." ON)
cmake_dependent_option(BGFX_BUILD_TOOLS_BIN2C "Build bx binary to c converter." ON BGFX_BUILD_TOOLS OFF)
cmake_dependent_option(BGFX_BUILD_TOOLS_SHADER "Build bgfx shader tools." ON BGFX_BUILD_TOOLS OFF)
cmake_dependent_option(BGFX_BUILD_TOOLS_GEOMETRY "Build bgfx geometry tools." ON BGFX_BUILD_TOOLS OFF)
cmake_dependent_option(BGFX_BUILD_TOOLS_TEXTURE "Build bgfx texture tools." ON BGFX_BUILD_TOOLS OFF)
set(BGFX_TOOLS_PREFIX "" CACHE STRING "Prefix name to add to name of tools (to avoid clashes)")
option(BGFX_BUILD_EXAMPLES "Build bgfx examples." ON)
option(BGFX_BUILD_TESTS "Build bgfx tests." OFF)
option(BGFX_INSTALL "Create installation target." ON)
cmake_dependent_option(
BGFX_INSTALL_EXAMPLES "Install examples and their runtimes." OFF "BGFX_INSTALL;BGFX_BUILD_EXAMPLES" OFF
)
option(BGFX_CUSTOM_TARGETS "Include convenience custom targets." ON)
option(BGFX_CONFIG_MULTITHREADED "Build bgfx with multithreaded configuration" ON)
option(BGFX_CONFIG_RENDERER_WEBGPU "Enable the webgpu renderer" OFF)
option(BGFX_CONFIG_DEBUG_ANNOTATION "Enable gfx debug annotations (default: on in debug)" OFF)
set(BGFX_OPENGL_VERSION "" CACHE STRING "Specify minimum opengl version")
set(BGFX_OPENGLES_VERSION "" CACHE STRING "Specify minimum OpenGL ES version")
set(BGFX_LIBRARY_TYPE "STATIC" CACHE STRING "Linking type for library")
set(BGFX_CONFIG_DEFAULT_MAX_ENCODERS "" CACHE STRING "Specify default maximum encoder count (multithreaded only)")
set(BGFX_CONFIG_MAX_DRAW_CALLS "" CACHE STRING "Specify maximum draw calls")
set(BGFX_CONFIG_MAX_VIEWS "" CACHE STRING "Specify maximum view count (should be a power of two)")
set(BGFX_CONFIG_MAX_FRAME_BUFFERS "" CACHE STRING "Specify maximum frame buffers")
set(BGFX_CONFIG_MAX_VERTEX_LAYOUTS "" CACHE STRING "Specify maximum vertex layouts")
set(BGFX_CONFIG_MAX_VERTEX_BUFFERS "" CACHE STRING "Specify maximum vertex buffer count")
set(BGFX_CONFIG_MAX_DYNAMIC_VERTEX_BUFFERS "" CACHE STRING "Specify maximum dynamic vertex buffer count")
set(BGFX_CONFIG_MAX_INDEX_BUFFERS "" CACHE STRING "Specify maximum index buffer count")
set(BGFX_CONFIG_MAX_DYNAMIC_INDEX_BUFFERS "" CACHE STRING "Specify maximum dynamic index buffer count")
set(BGFX_CONFIG_MAX_TEXTURES "" CACHE STRING "Specify maximum texture count")
set(BGFX_CONFIG_MAX_TEXTURE_SAMPLERS "" CACHE STRING "Specify maximum texture samplers")
set(BGFX_CONFIG_MAX_SHADERS "" CACHE STRING "Specify shader count")
set(BGFX_CONFIG_SORT_KEY_NUM_BITS_PROGRAM "" CACHE STRING "Specify maximum program count as 2^(program bits)")
set(BGFX_CMAKE_USER_SCRIPT "" CACHE STRING "Path to custom cmake script to include")
if(BGFX_CMAKE_USER_SCRIPT)
include(${BGFX_CMAKE_USER_SCRIPT})
endif()
set_property(CACHE BGFX_LIBRARY_TYPE PROPERTY STRINGS STATIC SHARED)
if(BGFX_LIBRARY_TYPE MATCHES "SHARED")
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()
if(BGFX_BUILD_TESTS)
enable_testing()
endif()
if(NOT BX_DIR)
set(BX_DIR "${CMAKE_CURRENT_SOURCE_DIR}/bx" CACHE STRING "Location of bx.")
elseif(NOT IS_ABSOLUTE "${BX_DIR}")
get_filename_component(BX_DIR "${BX_DIR}" REALPATH BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
if(NOT BIMG_DIR)
set(BIMG_DIR "${CMAKE_CURRENT_SOURCE_DIR}/bimg" CACHE STRING "Location of bimg.")
elseif(NOT IS_ABSOLUTE "${BIMG_DIR}")
get_filename_component(BIMG_DIR "${BIMG_DIR}" REALPATH BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
if(NOT BGFX_DIR)
set(BGFX_DIR "${CMAKE_CURRENT_SOURCE_DIR}/bgfx" CACHE STRING "Location of bgfx.")
elseif(NOT IS_ABSOLUTE "${BGFX_DIR}")
get_filename_component(BGFX_DIR "${BGFX_DIR}" REALPATH BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
# sets project version from api ver / git rev
include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.cmake)
if(BGFX_BUILD_TOOLS AND BGFX_CUSTOM_TARGETS)
add_custom_target(tools)
set_target_properties(tools PROPERTIES FOLDER "bgfx/tools")
endif()
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/cmake/bx)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/cmake/bimg)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/cmake/bgfx)
if(BGFX_INSTALL)
include(GNUInstallDirs)
# Layout. This works for all platforms:
# * <prefix>/lib*/cmake/<PROJECT-NAME>
# * <prefix>/lib*/
# * <prefix>/include/
set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
# Configuration
set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(namespace "${PROJECT_NAME}::")
# Include module with fuction 'write_basic_package_version_file'
include(CMakePackageConfigHelpers)
# Configure '<PROJECT-NAME>ConfigVersion.cmake'
# Use:
# * PROJECT_VERSION
if(${CMAKE_VERSION} VERSION_LESS "3.11.0")
set(BGFX_COMPATIBILITY SameMajorVersion)
else()
set(BGFX_COMPATIBILITY SameMinorVersion)
endif()
write_basic_package_version_file("${version_config}" VERSION ${PROJECT_VERSION} COMPATIBILITY ${BGFX_COMPATIBILITY})
# Configure '<PROJECT-NAME>Config.cmake'
# Use variables:
# * TARGETS_EXPORT_NAME
# * PROJECT_NAME
# * BGFX_CMAKE_USER_SCRIPT_PRESENT
# * BGFX_CMAKE_USER_SCRIPT_INSTALL_NAME
if(BGFX_CMAKE_USER_SCRIPT STREQUAL "")
set(BGFX_CMAKE_USER_SCRIPT_PRESENT OFF)
set(BGFX_CMAKE_USER_SCRIPT_INSTALL_NAME "NOT-USED")
else()
set(BGFX_CMAKE_USER_SCRIPT_PRESENT ON)
get_filename_component(BGFX_CMAKE_USER_SCRIPT_INSTALL_NAME ${BGFX_CMAKE_USER_SCRIPT} NAME)
endif()
configure_package_config_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}"
INSTALL_DESTINATION "${config_install_dir}"
)
install(FILES ${BGFX_DIR}/LICENSE DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/licences/${PROJECT_NAME})
install(
TARGETS bgfx
EXPORT "${TARGETS_EXPORT_NAME}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
INCLUDES
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)
if(NOT BGFX_LIBRARY_TYPE MATCHES "SHARED")
install(
TARGETS bimg bx
EXPORT "${TARGETS_EXPORT_NAME}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
INCLUDES
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)
endif()
if(BGFX_CONFIG_RENDERER_WEBGPU)
install(
TARGETS webgpu
EXPORT "${TARGETS_EXPORT_NAME}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
INCLUDES
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)
endif()
# install headers (this should be done as a target probably... ^)
install(DIRECTORY ${BX_DIR}/include/bx ${BX_DIR}/include/compat ${BX_DIR}/include/tinystl
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)
install(DIRECTORY ${BIMG_DIR}/include/bimg DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
install(DIRECTORY ${BGFX_DIR}/include/bgfx DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
# header required for shader compilation
install(FILES ${BGFX_DIR}/src/bgfx_shader.sh ${BGFX_DIR}/src/bgfx_compute.sh
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/bgfx"
)
# install tools
if(BGFX_CMAKE_USER_SCRIPT)
install(FILES ${BGFX_CMAKE_USER_SCRIPT} DESTINATION "${config_install_dir}")
endif()
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/bgfxToolUtils.cmake DESTINATION "${config_install_dir}")
if(BGFX_BUILD_TOOLS_BIN2C)
install(TARGETS bin2c EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
if(BGFX_BUILD_TOOLS_SHADER)
install(TARGETS shaderc EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
if(BGFX_BUILD_TOOLS_GEOMETRY)
install(TARGETS geometryc EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(TARGETS geometryv EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
if(BGFX_BUILD_TOOLS_TEXTURE)
install(TARGETS texturec EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(TARGETS texturev EXPORT "${TARGETS_EXPORT_NAME}" DESTINATION "${CMAKE_INSTALL_BINDIR}")
endif()
# install examples
if(BGFX_BUILD_EXAMPLES AND BGFX_INSTALL_EXAMPLES)
install(DIRECTORY ${BGFX_DIR}/examples/runtime/ DESTINATION examples)
foreach(EXAMPLE ${BGFX_EXAMPLES})
install(TARGETS example-${EXAMPLE} DESTINATION examples)
endforeach()
endif()
# Config
# * <prefix>/lib/cmake/bgfx/bgfxConfig.cmake
# * <prefix>/lib/cmake/bgfx/bgfxConfigVersion.cmake
install(FILES "${project_config}" "${version_config}" DESTINATION "${config_install_dir}")
# Config
# * <prefix>/lib/cmake/bgfx/bgfxTargets.cmake
install(EXPORT "${TARGETS_EXPORT_NAME}" NAMESPACE "${namespace}" DESTINATION "${config_install_dir}")
endif()
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