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glew-cmake/CMakeLists.txt

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CMake
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cmake_minimum_required(VERSION 2.8.12)
file(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/config/version _VERSION_MAJOR_STRING REGEX "GLEW_MAJOR[ ]*=[ ]*[0-9]+.*")
string(REGEX REPLACE "GLEW_MAJOR[ ]*=[ ]*([0-9]+)" "\\1" MAJOR_VERSION ${_VERSION_MAJOR_STRING})
file(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/config/version _VERSION_MINOR_STRING REGEX "GLEW_MINOR[ ]*=[ ]*[0-9]+.*")
string(REGEX REPLACE "GLEW_MINOR[ ]*=[ ]*([0-9]+)" "\\1" MINOR_VERSION ${_VERSION_MINOR_STRING})
file(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/config/version _VERSION_PATCH_STRING REGEX "GLEW_MICRO[ ]*=[ ]*[0-9]+.*")
string(REGEX REPLACE "GLEW_MICRO[ ]*=[ ]*([0-9]+)" "\\1" PATCH_VERSION ${_VERSION_PATCH_STRING})
set(GLEW_VERSION ${MAJOR_VERSION}.${MINOR_VERSION}.${PATCH_VERSION})
if(NOT CMAKE_VERSION VERSION_LESS 3.0)
cmake_policy(SET CMP0048 NEW)
project("glew" VERSION ${GLEW_VERSION} LANGUAGES C)
else()
project("glew" C)
set(CPACK_PACKAGE_VERSION_MAJOR ${MAJOR_VERSION})
set(CPACK_PACKAGE_VERSION_MINOR ${MAJOR_VERSION})
set(CPACK_PACKAGE_VERSION_PATCH ${MAJOR_VERSION})
endif()
set(SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
set(INCLUDE_DIR "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>$<INSTALL_INTERFACE:include>")
set(RC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/build)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
include("GeneratePkgConfig.cmake")
if (POLICY CMP0077)
cmake_policy(SET CMP0077 NEW)
endif()
option(glew-cmake_BUILD_SHARED "Build the shared glew library" ON)
option(glew-cmake_BUILD_STATIC "Build the static glew library" ON)
option(USE_GLU "Use GLU" OFF)
option(GLEW_OSMESA "Off-screen Mesa mode" OFF)
option(PKG_CONFIG_REPRESENTATIVE_TARGET "Generate pc file for specified target as glew. libglew_static|libglew_shared" OFF)
option(ONLY_LIBS "Do not build executables" OFF)
set(LIBGLEW_SRCS ${SRC_DIR}/glew.c)
set(DEFINITIONS)
if(WIN32)
list(APPEND DEFINITIONS -DWIN32_MEAN_AND_LEAN -DVC_EXTRALEAN -D_CRT_SECURE_NO_WARNINGS)
endif()
if(MSVC)
list(APPEND LIBGLEW_SRCS ${RC_DIR}/glew.rc)
endif()
# Use namespaced libraries when supported
if(NOT CMAKE_VERSION VERSION_LESS 3.14)
set(USE_NAMESPACED_LIB YES)
else()
set(USE_NAMESPACED_LIB NO)
endif()
if(POLICY CMP0028)
cmake_policy(SET CMP0028 NEW)
endif()
if(POLICY CMP0042)
cmake_policy(SET CMP0042 NEW)
endif()
if(POLICY CMP0072)
set(OpenGL_GL_PREFERENCE GLVND)
endif()
if(NOT (WIN32 OR APPLE))
message("Try to find OpenGL with GLVND")
find_package(OpenGL REQUIRED
COMPONENTS OpenGL GLX)
endif()
if(OPENGL_FOUND AND OpenGL_GLX_FOUND AND TARGET OpenGL::OpenGL)
set(USE_GLVND YES)
else()
message("GLVND not supported. Try find OpenGL legacy")
find_package(OpenGL REQUIRED)
set(USE_GLVND NO)
endif()
set(pc_requires)
if(NOT USE_GLU)
list(APPEND DEFINITIONS -DGLEW_NO_GLU)
else()
if(NOT OPENGL_GLU_FOUND)
message(FATAL_ERROR "GLU is not found. but GLU option is enabled")
endif()
list(APPEND pc_requires glu)
if(USE_NAMESPACED_LIB)
list(APPEND LIBRARIES OpenGL::GLU)
else()
list(APPEND LIBRARIES ${OPENGL_glu_LIBRARY})
endif()
endif()
list(APPEND pc_requires gl)
if(USE_NAMESPACED_LIB)
if(USE_GLVND)
list(APPEND LIBRARIES OpenGL::OpenGL)
else()
list(APPEND LIBRARIES OpenGL::GL)
endif()
else()
if(USE_GLVND)
list(APPEND LIBRARIES ${OPENGL_opengl_LIBRARY})
else()
list(APPEND LIBRARIES ${OPENGL_gl_LIBRARY})
endif()
endif()
# OS Specific dependencies
if(APPLE)
find_library(AGL_LIBRARY AGL REQUIRED)
list(APPEND LIBRARIES ${AGL_LIBRARY})
elseif(NOT WIN32)
if(GLEW_OSMESA)
find_library(OSMESA_LIBRARY OSMesa REQUIRED)
list(APPEND LIBRARIES ${OSMESA_LIBRARY})
list(APPEND DEFINITIONS -DGLEW_OSMESA)
list(APPEND pc_requires osmesa)
else()
if(USE_GLVND)
if(NOT OpenGL_GLX_FOUND)
message(FATAL_ERROR "GLX is not found. Try with PREFER_GLVND=NO")
endif()
if(USE_NAMESPACED_LIB)
list(APPEND LIBRARIES OpenGL::GLX)
else()
list(APPEND LIBRARIES ${OPENGL_glx_LIBRARY})
endif()
endif()
find_package(X11 REQUIRED)
list(APPEND pc_requires x11 xext)
if(USE_NAMESPACED_LIB)
list(APPEND LIBRARIES X11::X11 X11::Xext)
else()
list(APPEND LIBRARIES ${X11_X11_LIB} ${X11_Xext_LIB})
endif()
endif()
endif()
set(GLEW_TARGETS)
if(NOT CMAKE_INSTALL_LIBDIR)
set(INSTALL_LIBDIR lib)
else()
set(INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_BINARY_DIR}/test_fs_support_case_sensitivity
COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_BINARY_DIR}/test_fs_support_CASE_sensitivity)
file(GLOB TEST_FILE_LIST ${CMAKE_BINARY_DIR}/test_fs_support_*_sensitivity)
list(LENGTH TEST_FILE_LIST TEST_FILE_COUNT)
if(TEST_FILE_COUNT EQUAL 2)
set(SUPPORT_CASE_SENSITIVE_FS YES)
else()
set(SUPPORT_CASE_SENSITIVE_FS NO)
endif()
function(set_representative_target TARGET)
set_target_properties(${TARGET} PROPERTIES
OUTPUT_NAME "glew"
DEBUG_POSTFIX d)
# Windows & macOS use case-insensetive FS. do not create symbolic link
if(SUPPORT_CASE_SENSITIVE_FS)
get_target_property(TARGET_TYPE ${TARGET} TYPE)
string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
if(CMAKE_BUILD_TYPE_LOWER STREQUAL "debug" AND NOT ANDROID)
set(GLEW_DEBUG_SUFFIX "d")
else()
set(GLEW_DEBUG_SUFFIX "")
endif()
if(TARGET_TYPE STREQUAL STATIC_LIBRARY)
set(EXT ".a")
get_target_property(OUT_DIR ${TARGET} ARCHIVE_OUTPUT_DIRECTORY)
else()
set(EXT ".so")
get_target_property(OUT_DIR ${TARGET} LIBRARY_OUTPUT_DIRECTORY)
endif()
if(NOT ${CMAKE_VERSION} VERSION_LESS 3.0)
add_custom_command(TARGET ${TARGET} POST_BUILD
COMMAND ${CMAKE_COMMAND} ARGS -E create_symlink libglew${GLEW_DEBUG_SUFFIX}${EXT} libGLEW${GLEW_DEBUG_SUFFIX}${EXT}
WORKING_DIRECTORY ${OUT_DIR}
BYPRODUCTS ${OUT_DIR}/libGLEW${GLEW_DEBUG_SUFFIX}${EXT}
COMMENT "create libGLEW${GLEW_DEBUG_SUFFIX} symbolic link")
else()
add_custom_command(TARGET ${TARGET} POST_BUILD
COMMAND bash ARGS -c "( test ! -e ${OUT_DIR}/libGLEW${GLEW_DEBUG_SUFFIX}${EXT} && cd ${OUT_DIR} && ${CMAKE_COMMAND} -E create_symlink libglew${GLEW_DEBUG_SUFFIX}${EXT} libGLEW${GLEW_DEBUG_SUFFIX}${EXT} ) || true"
COMMENT "create libGLEW${GLEW_DEBUG_SUFFIX} symbolic link"
VERBATIM)
endif()
if(NOT ${CMAKE_VERSION} VERSION_LESS 3.14)
install(FILES ${OUT_DIR}/libGLEW${GLEW_DEBUG_SUFFIX}${EXT} TYPE LIB)
else()
install(FILES ${OUT_DIR}/libGLEW${GLEW_DEBUG_SUFFIX}${EXT} DESTINATION ${INSTALL_LIBDIR})
endif()
endif()
endfunction()
if(glew-cmake_BUILD_STATIC)
add_library(libglew_static STATIC ${LIBGLEW_SRCS})
set_representative_target(libglew_static)
target_compile_definitions(libglew_static PUBLIC GLEW_STATIC)
list(APPEND GLEW_TARGETS libglew_static)
endif()
if(glew-cmake_BUILD_SHARED)
add_library(libglew_shared SHARED ${LIBGLEW_SRCS})
if(glew-cmake_BUILD_STATIC)
set_target_properties(libglew_shared PROPERTIES
OUTPUT_NAME "glew-shared"
DEBUG_POSTFIX d)
else()
set_representative_target(libglew_shared)
endif()
target_compile_definitions(libglew_shared PRIVATE GLEW_BUILD)
if(MINGW)
if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
target_link_options(libglew_shared PRIVATE -nostdlib)
else()
target_link_libraries(libglew_shared PRIVATE -nostdlib)
endif()
endif()
list(APPEND GLEW_TARGETS libglew_shared)
endif()
foreach(GLEW_TARGET ${GLEW_TARGETS})
target_compile_definitions(${GLEW_TARGET} PUBLIC ${DEFINITIONS})
target_include_directories(${GLEW_TARGET} PUBLIC ${INCLUDE_DIR})
target_link_libraries(${GLEW_TARGET} PUBLIC ${LIBRARIES})
set_target_properties(${GLEW_TARGET} PROPERTIES VERSION ${GLEW_VERSION})
endforeach()
if(PKG_CONFIG_REPRESENTATIVE_TARGET)
GeneratePkgConfigFile(${PKG_CONFIG_REPRESENTATIVE_TARGET} "The OpenGL Extension Wrangler library"
NAME "glew"
LIBRARY_DIR ${INSTALL_LIBDIR}
REQUIRES ${pc_requires})
endif()
install(TARGETS ${GLEW_TARGETS} EXPORT glew-cmake
ARCHIVE DESTINATION ${INSTALL_LIBDIR}
LIBRARY DESTINATION ${INSTALL_LIBDIR})
install(EXPORT glew-cmake DESTINATION ${INSTALL_LIBDIR}/cmake/glew FILE glewConfig.cmake)
file(GLOB PUBLIC_HEADERS "include/GL/*.h")
install(FILES ${PUBLIC_HEADERS} DESTINATION include/GL/)
if(${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_SOURCE_DIR} AND NOT ONLY_LIBS)
set(GLEWINFO_SRCS ${SRC_DIR}/glewinfo.c)
set(VISUALINFO_SRCS ${SRC_DIR}/visualinfo.c)
if(MSVS)
list(APPEND GLEWINFO_SRCS ${RC_DIR}/glewinfo.rc)
list(APPEND VISUALINFO_SRCS ${RC_DIR}/visualinfo.rc)
endif()
add_executable(glewinfo ${GLEWINFO_SRCS})
add_executable(visualinfo ${VISUALINFO_SRCS})
if(glew-cmake_BUILD_STATIC)
target_link_libraries(glewinfo libglew_static)
target_link_libraries(visualinfo libglew_static)
else()
target_link_libraries(glewinfo libglew_shared)
target_link_libraries(visualinfo libglew_shared)
endif()
install(TARGETS glewinfo visualinfo DESTINATION bin)
endif()
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