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