diff options
Diffstat (limited to 'cmake/FindGLESv2.cmake')
-rw-r--r-- | cmake/FindGLESv2.cmake | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/cmake/FindGLESv2.cmake b/cmake/FindGLESv2.cmake new file mode 100644 index 0000000000..49e757ef55 --- /dev/null +++ b/cmake/FindGLESv2.cmake @@ -0,0 +1,72 @@ +include(CheckCXXSourceCompiles) + +# No library linkage is necessary to use GLESv2 with Emscripten. The headers are also +# system headers, so we don't need to search for them. +if(EMSCRIPTEN) + set(HAVE_GLESv2 ON) +else() + find_library(GLESv2_LIBRARY NAMES GLESv2 OpenGLES) + find_path(GLESv2_INCLUDE_DIR NAMES "GLES2/gl2.h" "OpenGLES/ES2/gl.h" DOC "The OpenGLES 2 include path") + set(_libraries "${CMAKE_REQUIRED_LIBRARIES}") + list(APPEND CMAKE_REQUIRED_LIBRARIES "${GLESv2_LIBRARY}") + set(_includes "${CMAKE_REQUIRED_INCLUDES}") + list(APPEND CMAKE_REQUIRED_INCLUDES "${GLESv2_INCLUDE_DIR}") + + check_cxx_source_compiles(" +#ifdef __APPLE__ +# include <OpenGLES/ES2/gl.h> +#else +# define GL_GLEXT_PROTOTYPES +# include <GLES2/gl2.h> +#endif + +int main(int argc, char *argv[]) { + glUniform1f(1, GLfloat(1.0)); + glClear(GL_COLOR_BUFFER_BIT); +}" HAVE_GLESv2) + + set(CMAKE_REQUIRED_LIBRARY "${_libraries}") + unset(_libraries) + set(CMAKE_REQUIRED_INCLUDES "${_includes}") + unset(_includes) + set(package_args GLESv2_INCLUDE_DIR GLESv2_LIBRARY HAVE_GLESv2) +endif() + +# Framework handling partially inspired by FindGLUT.cmake. +if(GLESv2_LIBRARY MATCHES "/([^/]+)\\.framework$") + # TODO: Might need to handle non .tbd suffixes, but didn't find an + # example like that. + # TODO: Might need to handle INTERFACE_INCLUDE_DIRECTORIES differently. + set(_library_imported_location "${GLESv2_LIBRARY}/${CMAKE_MATCH_1}.tbd") + if(NOT EXISTS "${_library_imported_location}") + set(_library_imported_location "") + endif() +else() + set(_library_imported_location "${GLESv2_LIBRARY}") +endif() +set(GLESv2_LIBRARY "${_library_imported_location}") + +list(APPEND package_args HAVE_GLESv2) + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(GLESv2 DEFAULT_MSG ${package_args}) + +mark_as_advanced(${package_args}) + +if(GLESv2_FOUND AND NOT TARGET GLESv2::GLESv2) + if(EMSCRIPTEN OR APPLE_UIKIT) + add_library(GLESv2::GLESv2 INTERFACE IMPORTED) + if(APPLE_UIKIT) + # For simulator_and_device builds we can't specify the full library path, because + # it's specific to either the device or the simulator. Resort to passing a link + # flag instead. + set_target_properties(GLESv2::GLESv2 PROPERTIES + INTERFACE_LINK_LIBRARIES "-framework OpenGLES") + endif() + else() + add_library(GLESv2::GLESv2 UNKNOWN IMPORTED) + set_target_properties(GLESv2::GLESv2 PROPERTIES + IMPORTED_LOCATION "${GLESv2_LIBRARY}" + INTERFACE_INCLUDE_DIRECTORIES "${GLESv2_INCLUDE_DIR}") + endif() +endif() |