CMake/Modules/FindOpenGL.cmake

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# Try to find OpenGL
# Once done this will define
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#
# OPENGL_FOUND - system has OpenGL and it should be used
# OPENGL_XMESA_FOUND - system has XMESA, and it should be used.
# OPENGL_GLU_FOUND - system has GLU and it should be used.
# OPENGL_INCLUDE_DIR - where the GL include directory can be found
# OPENGL_LIBRARIES - Link these to use OpenGL
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#
#
# Also defined, but not for general use are
# OPENGL_gl_LIBRARY - Path to OpenGL Library
# OPENGL_glu_LIBRARY - Pat to GLU Librar
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#
IF (WIN32)
IF (CYGWIN)
FIND_PATH(OPENGL_INCLUDE_DIR GL/gl.h
/usr/include
/usr/X11R6/include
)
FIND_LIBRARY(OPENGL_gl_LIBRARY opengl32
/usr/lib
/usr/lib/w32api
)
FIND_LIBRARY(OPENGL_glu_LIBRARY glu32
/usr/lib
/usr/lib/w32api
)
ELSE (CYGWIN)
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(BORLAND)
SET (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32")
SET (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32")
ENDIF(BORLAND)
# No extra include path needed because OpenGL includes are with
# the system includes but, cmake will create makefiles with
# "-I${OPENGL_INCLUDE_DIR}" options if OPENGL_INCLUDE_DIR is
# not set. OPENGL_INCLUDE_DIR cannot be set to "" because the
# resulting -I option to "cl" will eat the following
# "-IC:\really\needed" option. This is a kludge to get around
# cmake not ignoring INCLUDE_DIRECTORIES commands with empty
# strings.
SET( OPENGL_INCLUDE_DIR "${PROJECT_SOURCE_DIR}" )
ENDIF (CYGWIN)
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ELSE (WIN32)
# 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/include
/usr/local/include
/usr/openwin/share/include
/opt/graphics/OpenGL/include
/usr/X11R6/include
)
FIND_PATH(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
/usr/share/doc/NVIDIA_GLX-1.0/include
/usr/include
/usr/local/include
/usr/openwin/share/include
/opt/graphics/OpenGL/include
/usr/X11R6/include
)
FIND_LIBRARY(OPENGL_gl_LIBRARY
NAMES MesaGL GL
PATHS /usr/lib
/usr/local/lib
/opt/graphics/OpenGL/lib
/usr/openwin/lib
/usr/X11R6/lib
)
# On Unix OpenGL most certainly always requires X11.
# Feel free to tighten up these conditions if you don't think this is always true.
IF (OPENGL_gl_LIBRARY)
INCLUDE( ${CMAKE_ROOT}/Modules/FindX11.cmake )
IF (X11_FOUND)
SET (OPENGL_LIBRARIES ${X11_LIBRARIES})
ENDIF (X11_FOUND)
ENDIF (OPENGL_gl_LIBRARY)
FIND_LIBRARY(OPENGL_glu_LIBRARY
NAMES MesaGLU GLU
PATHS /usr/lib
/usr/local/lib
/opt/graphics/OpenGL/lib
/usr/openwin/lib
/usr/X11R6/lib
)
ENDIF (WIN32)
SET( OPENGL_FOUND "NO" )
IF(OPENGL_INCLUDE_DIR)
IF(OPENGL_gl_LIBRARY)
IF(OPENGL_xmesa_INCLUDE_DIR)
SET( OPENGL_XMESA_FOUND "YES" )
ELSE(OPENGL_xmesa_INCLUDE_DIR)
SET( OPENGL_XMESA_FOUND "NO" )
ENDIF(OPENGL_xmesa_INCLUDE_DIR)
IF(OPENGL_glu_LIBRARY)
SET( OPENGL_GLU_FOUND "YES" )
ENDIF(OPENGL_glu_LIBRARY)
SET( OPENGL_GLU_FOUND "NO" )
ENDIF(OPENGL_glu_LIBRARY)
SET( OPENGL_FOUND "YES" )
SET( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES})
#The following deprecated settings are for backwards compatibility with CMake1.4
SET (OPENGL_LIBRARY ${OPENGL_LIBRARIES})
SET (OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
ENDIF(OPENGL_gl_LIBRARY)
SET(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})
ENDIF(OPENGL_INCLUDE_DIR)
MARK_AS_ADVANCED(
OPENGL_INCLUDE_DIR
OPENGL_xmesa_INCLUDE_DIR
OPENGL_glu_LIBRARY
OPENGL_gl_LIBRARY
)