Saxum/extern/acgl/cmake/FindOPENAL.cmake

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CMake
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2014-10-20 15:31:26 +00:00
# - Find OPENAL
# Find the native OPENAL headers
#
# OPENAL_INCLUDE_DIR - where to find OPENAL.h, etc.
# OPENAL_LIBRARIES - OPENAL library
# OPENAL_FOUND - True if OPENAL found.
IF(OPENAL_FOUND)
# Already in cache, be silent
SET(OPENAL_FIND_QUIETLY TRUE)
ENDIF()
IF(BUILD_OPENAL OR ACGL_GLOBAL_EXTERN_DIR_FOUND_FIRST_TIME OR BUILD_TYPE_CHANGED)
UNSET(OPENAL_INCLUDE_DIR CACHE)
UNSET(OPENAL_LIBRARIES CACHE)
ENDIF()
IF(BUILD_OPENAL)
SET(OPENAL_INCLUDE_DIR "${ACGL_LOCAL_EXTERN_DIR}/openal/include")
SET(OPENAL_LIBRARIES openal${COMPILE_POSTFIX})
ELSE()
# Look for the header file.
IF(ACGL_GLOBAL_EXTERN_DIR)
FIND_PATH(OPENAL_INCLUDE_DIR NAMES AL/al.h PATHS "${ACGL_GLOBAL_EXTERN_DIR}/openal/include" NO_DEFAULT_PATH)
ENDIF()
IF(NOT OPENAL_INCLUDE_DIR)
FIND_PATH(OPENAL_INCLUDE_DIR NAMES AL/al.h)
ENDIF()
# Look for the library file.
IF(ACGL_GLOBAL_EXTERN_DIR)
FIND_LIBRARY(OPENAL_LIBRARIES NAMES openal${COMPILE_POSTFIX} PATHS "${ACGL_GLOBAL_EXTERN_DIR}/openal/lib" NO_DEFAULT_PATH)
ENDIF()
IF(NOT OPENAL_LIBRARIES)
FIND_LIBRARY(OPENAL_LIBRARIES NAMES openal${COMPILE_POSTFIX})
ENDIF()
ENDIF()
# Copy the results to the output variables.
IF(OPENAL_INCLUDE_DIR AND OPENAL_LIBRARIES)
SET(OPENAL_FOUND TRUE CACHE INTERNAL "")
ELSE()
SET(OPENAL_FOUND FALSE CACHE INTERNAL "")
ENDIF()
# Report the results.
IF(NOT OPENAL_FOUND)
SET(OPENAL_MESSAGE "OPENAL was not found. Make sure OPENAL_INCLUDE_DIR AND OPENAL_LIBRARIES are set correctly.")
IF(OPENAL_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "${OPENAL_MESSAGE}")
ELSEIF(NOT OPENAL_FIND_QUIETLY)
MESSAGE(STATUS "${OPENAL_MESSAGE}")
ENDIF()
ELSEIF(NOT OPENAL_FIND_QUIETLY)
MESSAGE(STATUS "Looking for OPENAL - found")
ENDIF()
MESSAGE(STATUS "OPENAL_INCLUDE_DIR:${OPENAL_INCLUDE_DIR}")
MESSAGE(STATUS "OPENAL_LIBRARIES:${OPENAL_LIBRARIES}")