| # - Try to Find OpenGL |
| # Once done, this will define |
| # |
| # OPENGL_FOUND - system has OpenGL installed. |
| # OPENGL_INCLUDE_DIRS - directories which contain the OpenGL headers. |
| # OPENGL_LIBRARIES - libraries required to link against OpenGL. |
| # OPENGL_DEFINITIONS - Compiler switches required for using OpenGL. |
| # |
| # Copyright (C) 2015 Igalia S.L. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS |
| # IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS |
| # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| |
| find_package(PkgConfig) |
| |
| pkg_check_modules(PC_OPENGL gl) |
| |
| if (PC_OPENGL_FOUND) |
| set(OPENGL_DEFINITIONS ${PC_OPENGL_CFLAGS_OTHER}) |
| endif () |
| |
| find_path(OPENGL_INCLUDE_DIRS NAMES GL/gl.h |
| HINTS ${PC_OPENGL_INCLUDEDIR} ${PC_OPENGL_INCLUDE_DIRS} |
| ) |
| |
| set(OPENGL_NAMES ${OPENGL_NAMES} gl GL) |
| find_library(OPENGL_LIBRARIES NAMES ${OPENGL_NAMES} |
| HINTS ${PC_OPENGL_LIBDIR} ${PC_OPENGL_LIBRARY_DIRS} |
| ) |
| |
| include(FindPackageHandleStandardArgs) |
| FIND_PACKAGE_HANDLE_STANDARD_ARGS(OPENGL DEFAULT_MSG OPENGL_INCLUDE_DIRS OPENGL_LIBRARIES) |
| |
| mark_as_advanced(OPENGL_INCLUDE_DIRS OPENGL_LIBRARIES) |
| |
| if (OPENGL_FOUND) |
| # We don't use find_package for GLX because it is part of -lGL, unlike EGL. We need to |
| # have OPENGL_INCLUDE_DIRS as part of the directories check_include_files() looks for in |
| # case OpenGL is installed into a non-standard location. |
| include(CMakePushCheckState) |
| CMAKE_PUSH_CHECK_STATE() |
| set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${OPENGL_INCLUDE_DIRS}) |
| include(CheckIncludeFiles) |
| check_include_files("GL/glx.h" GLX_FOUND) |
| CMAKE_POP_CHECK_STATE() |
| endif () |