# Try to find Mesa off-screen library and include dir.
# Once done this will define
#
# OSMESA_FOUND        - true if OSMesa has been found
# OSMESA_INCLUDE_DIR  - where the GL/osmesa.h can be found
# OSMESA_LIBRARY      - Link this to use OSMesa


if(NOT OSMESA_INCLUDE_DIR)
  find_path(OSMESA_INCLUDE_DIR GL/osmesa.h
    /usr/openwin/share/include
    /opt/graphics/OpenGL/include
  )
endif()

# This may be left blank if OSMesa symbols are included
# in the main Mesa library
if(NOT OSMESA_LIBRARY)
  find_library(OSMESA_LIBRARY OSMesa
    /opt/graphics/OpenGL/lib
    /usr/openwin/lib
  )
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(OSMesa  DEFAULT_MSG  OSMESA_LIBRARY  OSMESA_INCLUDE_DIR)

mark_as_advanced(OSMESA_INCLUDE_DIR OSMESA_LIBRARY)

# Try to find Mesa off-screen library and include dir.
# Once done this will define
#
# OSMESA_FOUND        - true if OSMesa has been found
# OSMESA_INCLUDE_DIR  - where the GL/osmesa.h can be found
# OSMESA_LIBRARY      - Link this to use OSMesa


if(NOT OSMESA_INCLUDE_DIR)

  # If we have a root defined look there first
  if(OSMESA_ROOT)
    find_path(OSMESA_INCLUDE_DIR GL/osmesa.h PATHS ${OSMESA_ROOT}/include
      NO_DEFAULT_PATH
    )
  endif()

  if(NOT OSMESA_INCLUDE_DIR)
    find_path(OSMESA_INCLUDE_DIR GL/osmesa.h PATHS
      /usr/openwin/share/include
      /opt/graphics/OpenGL/include
    )
  endif()
endif()

# This may be left blank if OSMesa symbols are included
# in the main Mesa library
if(NOT OSMESA_LIBRARY)
  # If we have a root defined look there first
  if(OSMESA_ROOT)
    find_library(OSMESA_LIBRARY OSMesa PATHS ${OSMESA_ROOT}/lib
      NO_DEFAULT_PATH
    )
  endif()

  if(NOT OSMESA_LIBRARY)
    find_library(OSMESA_LIBRARY OSMesa PATHS
      /opt/graphics/OpenGL/lib
      /usr/openwin/lib
    )
  endif()
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(OSMesa  DEFAULT_MSG  OSMESA_LIBRARY  OSMESA_INCLUDE_DIR)

mark_as_advanced(OSMESA_INCLUDE_DIR OSMESA_LIBRARY)

Allow location of OSMesa install to be specified
Allow location of OSMesa install to be specified

Allow the location of an OSMesa install to be specified and
search there first for includes and library. The location
can be specified by setting OSMESA_ROOT.

Change-Id: I0afe52b9f81a70a990d36d6895a3ce50720706a9
