cmake_modules/FindOpenGL.cmake
changeset 11663 f87ed83568c8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/FindOpenGL.cmake	Thu Apr 21 11:54:21 2016 -0400
@@ -0,0 +1,209 @@
+#.rst:
+# FindOpenGL
+# ----------
+#
+# FindModule for OpenGL and GLU.
+#
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# This module sets the following variables:
+#
+# ``OPENGL_FOUND``
+#  True, if the system has OpenGL.
+# ``OPENGL_XMESA_FOUND``
+#  True, if the system has XMESA.
+# ``OPENGL_GLU_FOUND``
+#  True, if the system has GLU.
+# ``OPENGL_INCLUDE_DIR``
+#  Path to the OpenGL include directory.
+# ``OPENGL_LIBRARIES``
+#  Paths to the OpenGL and GLU libraries.
+#
+# If you want to use just GL you can use these values:
+#
+# ``OPENGL_gl_LIBRARY``
+#  Path to the OpenGL library.
+# ``OPENGL_glu_LIBRARY``
+#  Path to the GLU library.
+#
+# OSX Specific
+# ^^^^^^^^^^^^
+#
+# On OSX default to using the framework version of OpenGL. People will
+# have to change the cache values of OPENGL_glu_LIBRARY and
+# OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX.
+
+
+#=============================================================================
+# Copyright 2001-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+set(_OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY)
+
+if (CYGWIN)
+
+  find_path(OPENGL_INCLUDE_DIR GL/gl.h )
+  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
+
+  find_library(OPENGL_gl_LIBRARY opengl32 )
+
+  find_library(OPENGL_glu_LIBRARY glu32 )
+
+elseif (WIN32)
+
+  if(BORLAND)
+    set (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32")
+    set (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32")
+  else()
+    set (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32")
+    set (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32")
+  endif()
+
+elseif (APPLE)
+
+  # The OpenGL.framework provides both gl and glu
+  find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL library for OS X")
+  find_library(OPENGL_glu_LIBRARY OpenGL DOC
+    "GLU library for OS X (usually same as OpenGL library)")
+  find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OS X")
+  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
+
+else()
+  if (CMAKE_SYSTEM_NAME MATCHES "HP-UX")
+    # Handle HP-UX cases where we only want to find OpenGL in either hpux64
+    # or hpux32 depending on if we're doing a 64 bit build.
+    if(CMAKE_SIZEOF_VOID_P EQUAL 4)
+      set(_OPENGL_LIB_PATH
+        /opt/graphics/OpenGL/lib/hpux32/)
+    else()
+      set(_OPENGL_LIB_PATH
+        /opt/graphics/OpenGL/lib/hpux64/
+        /opt/graphics/OpenGL/lib/pa20_64)
+    endif()
+  elseif(CMAKE_SYSTEM_NAME STREQUAL Haiku)
+    set(_OPENGL_LIB_PATH
+      /boot/develop/lib/x86)
+    set(_OPENGL_INCLUDE_PATH
+      /boot/develop/headers/os/opengl)
+  endif()
+
+  # The first line below is to make sure that the proper headers
+  # are used on a Linux machine with the NVidia drivers installed.
+  # They replace Mesa with NVidia's own library but normally do not
+  # install headers and that causes the linking to
+  # fail since the compiler finds the Mesa headers but NVidia's library.
+  # Make sure the NVIDIA directory comes BEFORE the others.
+  #  - Atanas Georgiev <atanas@cs.columbia.edu>
+
+  find_path(OPENGL_INCLUDE_DIR GL/gl.h
+    /usr/share/doc/NVIDIA_GLX-1.0/include
+    /usr/openwin/share/include
+    /opt/graphics/OpenGL/include /usr/X11R6/include
+    ${_OPENGL_INCLUDE_PATH}
+  )
+  list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)
+
+  find_path(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
+    /usr/share/doc/NVIDIA_GLX-1.0/include
+    /usr/openwin/share/include
+    /opt/graphics/OpenGL/include /usr/X11R6/include
+  )
+
+  find_library(OPENGL_gl_LIBRARY
+    NAMES GL MesaGL
+    PATHS /opt/graphics/OpenGL/lib
+          /usr/openwin/lib
+          /usr/shlib /usr/X11R6/lib
+          ${_OPENGL_LIB_PATH}
+  )
+
+  unset(_OPENGL_INCLUDE_PATH)
+  unset(_OPENGL_LIB_PATH)
+
+  find_library(OPENGL_glu_LIBRARY
+    NAMES GLU MesaGLU
+    PATHS ${OPENGL_gl_LIBRARY}
+          /opt/graphics/OpenGL/lib
+          /usr/openwin/lib
+          /usr/shlib /usr/X11R6/lib
+  )
+
+endif ()
+
+if(OPENGL_gl_LIBRARY)
+
+    if(OPENGL_xmesa_INCLUDE_DIR)
+      set( OPENGL_XMESA_FOUND "YES" )
+    else()
+      set( OPENGL_XMESA_FOUND "NO" )
+    endif()
+
+    set( OPENGL_LIBRARIES  ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES})
+    if(OPENGL_glu_LIBRARY)
+      set( OPENGL_GLU_FOUND "YES" )
+      if(NOT "${OPENGL_glu_LIBRARY}" STREQUAL "${OPENGL_gl_LIBRARY}")
+        set( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} )
+      endif()
+    else()
+      set( OPENGL_GLU_FOUND "NO" )
+    endif()
+
+    # This deprecated setting is for backward compatibility with CMake1.4
+    set (OPENGL_LIBRARY ${OPENGL_LIBRARIES})
+
+endif()
+
+# This deprecated setting is for backward compatibility with CMake1.4
+set(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
+
+if(BUILD_ENGINE_JS)
+    # The implementation is based on the standard FindOpenGL.cmake provided
+    # with CMake, but customized for targeting Emscripten only.
+
+    # These libraries are provided with Emscripten
+    SET(OPENGL_FOUND TRUE)
+    SET(OPENGL_GLU_FOUND TRUE)
+
+    # Doesn't look like this one is part of Emscripten
+    SET(OPENGL_XMESA_FOUND FALSE)
+
+    # This is the path where <GL/gl.h> is found
+    SET(OPENGL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
+
+    # No library to link against for OpenGL, since Emscripten picks it up
+    # automatically from library_gl.js, but need to report something, or
+    # CMake thinks we failed in the search.
+    SET(OPENGL_LIBRARIES "opengl_emscripten_internal")
+    SET(OPENGL_gl_LIBRARY "gl_emscripten_internal")
+    SET(OPENGL_glu_LIBRARY "glu_emscripten_internal")
+
+    mark_as_advanced(
+      OPENGL_INCLUDE_DIR
+      OPENGL_glu_LIBRARY
+      OPENGL_gl_LIBRARY
+    )
+endif()
+
+# handle the QUIETLY and REQUIRED arguments and set OPENGL_FOUND to TRUE if
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenGL REQUIRED_VARS ${_OpenGL_REQUIRED_VARS})
+unset(_OpenGL_REQUIRED_VARS)
+
+mark_as_advanced(
+  OPENGL_INCLUDE_DIR
+  OPENGL_xmesa_INCLUDE_DIR
+  OPENGL_glu_LIBRARY
+  OPENGL_gl_LIBRARY
+)