#
# Try to find GLEW library and include path.
# Once done this will define
#
# GLEW_FOUND
# GLEW_INCLUDE_DIR
# GLEW_LIBRARY
# 
IF (WIN32)
    FIND_PATH( GLEW_INCLUDE_DIR GL/glew.h
        $ENV{PROGRAMFILES}/GLEW/include
        ${PROJECT_SOURCE_DIR}/src/nvgl/glew/include
        ${PROJECT_SOURCE_DIR}/scripts/vcpkg/packages/*/include
        DOC "The directory where GL/glew.h resides")
    FIND_LIBRARY( GLEW_LIBRARY
        NAMES glew GLEW glew32 glew32s
        PATHS
        $ENV{PROGRAMFILES}/GLEW/lib
        ${PROJECT_SOURCE_DIR}/src/nvgl/glew/bin
        ${PROJECT_SOURCE_DIR}/src/nvgl/glew/lib
        ${PROJECT_SOURCE_DIR}/scripts/vcpkg/packages/*/lib
        DOC "The GLEW library")
ELSE (WIN32)
    FIND_PATH( GLEW_INCLUDE_DIR GL/glew.h
        /usr/include
        /usr/local/include
        /sw/include
        /opt/local/include
        DOC "The directory where GL/glew.h resides")
    FIND_LIBRARY( GLEW_LIBRARY
        NAMES GLEW glew
        PATHS
        /usr/lib64
        /usr/lib
        /usr/local/lib64
        /usr/local/lib
        /sw/lib
        /opt/local/lib
        DOC "The GLEW library")
ENDIF (WIN32)

IF (GLEW_INCLUDE_DIR AND GLEW_LIBRARY)
        SET( GLEW_FOUND TRUE )
ENDIF (GLEW_INCLUDE_DIR AND GLEW_LIBRARY)

IF (GLEW_FOUND)
   IF (NOT GLEW_FIND_QUIETLY)
      MESSAGE(STATUS "Found GLEW: ${GLEW_LIBRARY}")
   ENDIF (NOT GLEW_FIND_QUIETLY)
ELSE (GLEW_FOUND)
   IF (GLEW_FIND_REQUIRED)
      MESSAGE(FATAL_ERROR "Could not find GLEW")
   ENDIF (GLEW_FIND_REQUIRED)
ENDIF (GLEW_FOUND)
