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glfw/CMakeLists.txt
Camilla Löwy 1353f37a51 Make unsupported versions of CMake fail early
2020-09-23 20:07:34 +02:00

324 lines
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CMake
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cmake_minimum_required(VERSION 3.1...3.17 FATAL_ERROR)
project(GLFW VERSION 3.4.0 LANGUAGES C)
set(CMAKE_LEGACY_CYGWIN_WIN32 OFF)
if (POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
if (POLICY CMP0069)
cmake_policy(SET CMP0069 NEW)
endif()
if (POLICY CMP0077)
cmake_policy(SET CMP0077 NEW)
endif()
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
if ("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
set(GLFW_STANDALONE TRUE)
endif()
option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ${GLFW_STANDALONE})
option(GLFW_BUILD_TESTS "Build the GLFW test programs" ${GLFW_STANDALONE})
option(GLFW_BUILD_DOCS "Build the GLFW documentation" ON)
option(GLFW_INSTALL "Generate installation target" ON)
option(GLFW_VULKAN_STATIC "Assume the Vulkan loader is linked with the application" OFF)
include(GNUInstallDirs)
include(CMakeDependentOption)
cmake_dependent_option(GLFW_USE_OSMESA "Use OSMesa for offscreen context creation" OFF
"UNIX" OFF)
cmake_dependent_option(GLFW_USE_HYBRID_HPG "Force use of high-performance GPU on hybrid systems" OFF
"WIN32" OFF)
cmake_dependent_option(GLFW_USE_WAYLAND "Use Wayland for window creation" OFF
"UNIX;NOT APPLE" OFF)
cmake_dependent_option(USE_MSVC_RUNTIME_LIBRARY_DLL "Use MSVC runtime library DLL" ON
"MSVC" OFF)
if (BUILD_SHARED_LIBS AND UNIX)
# On Unix-like systems, shared libraries can use the soname system.
set(GLFW_LIB_NAME glfw)
else()
set(GLFW_LIB_NAME glfw3)
endif()
if (GLFW_VULKAN_STATIC)
if (BUILD_SHARED_LIBS)
# If you absolutely must do this, remove this line and add the Vulkan
# loader static library via the CMAKE_SHARED_LINKER_FLAGS
message(FATAL_ERROR "You are trying to link the Vulkan loader static library into the GLFW shared library")
endif()
set(_GLFW_VULKAN_STATIC 1)
endif()
list(APPEND CMAKE_MODULE_PATH "${GLFW_SOURCE_DIR}/CMake/modules")
find_package(Threads REQUIRED)
if (GLFW_BUILD_DOCS)
set(DOXYGEN_SKIP_DOT TRUE)
find_package(Doxygen)
endif()
#--------------------------------------------------------------------
# Set compiler specific flags
#--------------------------------------------------------------------
if (MSVC)
if (NOT USE_MSVC_RUNTIME_LIBRARY_DLL)
foreach (flag CMAKE_C_FLAGS
CMAKE_C_FLAGS_DEBUG
CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL
CMAKE_C_FLAGS_RELWITHDEBINFO)
if (${flag} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
endif()
if (${flag} MATCHES "/MDd")
string(REGEX REPLACE "/MDd" "/MTd" ${flag} "${${flag}}")
endif()
endforeach()
endif()
endif()
#--------------------------------------------------------------------
# Detect and select backend APIs
#--------------------------------------------------------------------
if (GLFW_USE_WAYLAND)
set(_GLFW_WAYLAND 1)
message(STATUS "Using Wayland for window creation")
elseif (GLFW_USE_OSMESA)
set(_GLFW_OSMESA 1)
message(STATUS "Using OSMesa for headless context creation")
elseif (WIN32)
set(_GLFW_WIN32 1)
message(STATUS "Using Win32 for window creation")
elseif (APPLE)
set(_GLFW_COCOA 1)
message(STATUS "Using Cocoa for window creation")
elseif (UNIX)
set(_GLFW_X11 1)
message(STATUS "Using X11 for window creation")
else()
message(FATAL_ERROR "No supported platform was detected")
endif()
#--------------------------------------------------------------------
# Find and add Unix math and time libraries
#--------------------------------------------------------------------
if (UNIX AND NOT APPLE)
find_library(RT_LIBRARY rt)
mark_as_advanced(RT_LIBRARY)
if (RT_LIBRARY)
list(APPEND glfw_LIBRARIES "${RT_LIBRARY}")
list(APPEND glfw_PKG_LIBS "-lrt")
endif()
find_library(MATH_LIBRARY m)
mark_as_advanced(MATH_LIBRARY)
if (MATH_LIBRARY)
list(APPEND glfw_LIBRARIES "${MATH_LIBRARY}")
list(APPEND glfw_PKG_LIBS "-lm")
endif()
if (CMAKE_DL_LIBS)
list(APPEND glfw_LIBRARIES "${CMAKE_DL_LIBS}")
list(APPEND glfw_PKG_LIBS "-l${CMAKE_DL_LIBS}")
endif()
endif()
#--------------------------------------------------------------------
# Use Win32 for window creation
#--------------------------------------------------------------------
if (_GLFW_WIN32)
list(APPEND glfw_PKG_LIBS "-lgdi32")
if (GLFW_USE_HYBRID_HPG)
set(_GLFW_USE_HYBRID_HPG 1)
endif()
endif()
#--------------------------------------------------------------------
# Use X11 for window creation
#--------------------------------------------------------------------
if (_GLFW_X11)
find_package(X11 REQUIRED)
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS "${X11_X11_INCLUDE_PATH}")
# Check for XRandR (modern resolution switching and gamma control)
if (NOT X11_Xrandr_INCLUDE_PATH)
message(FATAL_ERROR "RandR headers not found; install libxrandr development package")
endif()
# Check for Xinerama (legacy multi-monitor support)
if (NOT X11_Xinerama_INCLUDE_PATH)
message(FATAL_ERROR "Xinerama headers not found; install libxinerama development package")
endif()
# Check for Xkb (X keyboard extension)
if (NOT X11_Xkb_INCLUDE_PATH)
message(FATAL_ERROR "XKB headers not found; install X11 development package")
endif()
# Check for Xcursor (cursor creation from RGBA images)
if (NOT X11_Xcursor_INCLUDE_PATH)
message(FATAL_ERROR "Xcursor headers not found; install libxcursor development package")
endif()
# Check for XInput (modern HID input)
if (NOT X11_Xi_INCLUDE_PATH)
message(FATAL_ERROR "XInput headers not found; install libxi development package")
endif()
# Check for X Shape (custom window input shape)
if (NOT X11_Xshape_INCLUDE_PATH)
message(FATAL_ERROR "X Shape headers not found; install libxext development package")
endif()
endif()
#--------------------------------------------------------------------
# Use Wayland for window creation
#--------------------------------------------------------------------
if (_GLFW_WAYLAND)
find_package(ECM REQUIRED NO_MODULE)
list(APPEND CMAKE_MODULE_PATH "${ECM_MODULE_PATH}")
find_package(Wayland REQUIRED Client Cursor Egl)
find_package(WaylandScanner REQUIRED)
find_package(WaylandProtocols 1.15 REQUIRED)
list(APPEND glfw_PKG_DEPS "wayland-client")
list(APPEND glfw_INCLUDE_DIRS "${Wayland_INCLUDE_DIRS}")
list(APPEND glfw_LIBRARIES "${Wayland_LIBRARIES}")
find_package(XKBCommon REQUIRED)
list(APPEND glfw_INCLUDE_DIRS "${XKBCOMMON_INCLUDE_DIRS}")
include(CheckIncludeFiles)
include(CheckFunctionExists)
check_include_files(xkbcommon/xkbcommon-compose.h HAVE_XKBCOMMON_COMPOSE_H)
check_function_exists(memfd_create HAVE_MEMFD_CREATE)
if (NOT ("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux"))
find_package(EpollShim)
if (EPOLLSHIM_FOUND)
list(APPEND glfw_INCLUDE_DIRS "${EPOLLSHIM_INCLUDE_DIRS}")
list(APPEND glfw_LIBRARIES "${EPOLLSHIM_LIBRARIES}")
endif()
endif()
endif()
#--------------------------------------------------------------------
# Use Cocoa for window creation and NSOpenGL for context creation
#--------------------------------------------------------------------
if (_GLFW_COCOA)
list(APPEND glfw_LIBRARIES
"-framework Cocoa"
"-framework IOKit"
"-framework CoreFoundation")
set(glfw_PKG_DEPS "")
set(glfw_PKG_LIBS "-framework Cocoa -framework IOKit -framework CoreFoundation")
endif()
#--------------------------------------------------------------------
# Add the Vulkan loader as a dependency if necessary
#--------------------------------------------------------------------
if (GLFW_VULKAN_STATIC)
list(APPEND glfw_PKG_DEPS "vulkan")
endif()
#--------------------------------------------------------------------
# Export GLFW library dependencies
#--------------------------------------------------------------------
foreach(arg ${glfw_PKG_DEPS})
set(GLFW_PKG_DEPS "${GLFW_PKG_DEPS} ${arg}")
endforeach()
foreach(arg ${glfw_PKG_LIBS})
set(GLFW_PKG_LIBS "${GLFW_PKG_LIBS} ${arg}")
endforeach()
#--------------------------------------------------------------------
# Create generated files
#--------------------------------------------------------------------
include(CMakePackageConfigHelpers)
set(GLFW_CONFIG_PATH "${CMAKE_INSTALL_LIBDIR}/cmake/glfw3")
configure_package_config_file(CMake/glfw3Config.cmake.in
src/glfw3Config.cmake
INSTALL_DESTINATION "${GLFW_CONFIG_PATH}"
NO_CHECK_REQUIRED_COMPONENTS_MACRO)
write_basic_package_version_file(src/glfw3ConfigVersion.cmake
VERSION ${GLFW_VERSION}
COMPATIBILITY SameMajorVersion)
configure_file(CMake/glfw3.pc.in src/glfw3.pc @ONLY)
#--------------------------------------------------------------------
# Add subdirectories
#--------------------------------------------------------------------
add_subdirectory(src)
if (GLFW_BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
if (GLFW_BUILD_TESTS)
add_subdirectory(tests)
endif()
if (DOXYGEN_FOUND AND GLFW_BUILD_DOCS)
add_subdirectory(docs)
endif()
#--------------------------------------------------------------------
# Install files other than the library
# The library is installed by src/CMakeLists.txt
#--------------------------------------------------------------------
if (GLFW_INSTALL)
install(DIRECTORY include/GLFW DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING PATTERN glfw3.h PATTERN glfw3native.h)
install(FILES "${GLFW_BINARY_DIR}/src/glfw3Config.cmake"
"${GLFW_BINARY_DIR}/src/glfw3ConfigVersion.cmake"
DESTINATION "${GLFW_CONFIG_PATH}")
install(EXPORT glfwTargets FILE glfw3Targets.cmake
EXPORT_LINK_INTERFACE_LIBRARIES
DESTINATION "${GLFW_CONFIG_PATH}")
install(FILES "${GLFW_BINARY_DIR}/src/glfw3.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
if (DOXYGEN_FOUND AND GLFW_BUILD_DOCS)
install(DIRECTORY "${GLFW_BINARY_DIR}/docs/html"
DESTINATION "${CMAKE_INSTALL_DOCDIR}")
endif()
# Only generate this target if no higher-level project already has
if (NOT TARGET uninstall)
configure_file(CMake/cmake_uninstall.cmake.in
cmake_uninstall.cmake IMMEDIATE @ONLY)
add_custom_target(uninstall
"${CMAKE_COMMAND}" -P
"${GLFW_BINARY_DIR}/cmake_uninstall.cmake")
set_target_properties(uninstall PROPERTIES FOLDER "GLFW3")
endif()
endif()
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