if(CLANG)

    set(clang_executable ${CLANG})

else()

    find_program(clang_executable

        NAMES clang-mp-3.2 clang-mp-3.1 clang-mp-3.0 clang

        PATHS /opt/local/bin /usr/local/bin /usr/bin)

endif()

if (clang_executable)

    exec_program(${clang_executable} ARGS "-v" OUTPUT_VARIABLE clang_version_full)

    string(REGEX MATCH "[0-9]+\\.[0-9]+" clang_version_long "${clang_version_full}")

    string(REGEX REPLACE "([0-9]+\\.[0-9]+)" "\\1" clang_version "${clang_version_long}")

    #TODO: check version >= 3.0

    message(STATUS "Found CLANG: ${clang_executable} (version ${clang_version})")

else()

    message(FATAL_ERROR "No LLVM/Clang compiler found (required for engine_c target)")

endif()

set(CMAKE_C_COMPILER ${clang_executable})

find_package(GLEW REQUIRED)

configure_file(${hedgewars_SOURCE_DIR}/hedgewars/config.inc.in ${CMAKE_CURRENT_BINARY_DIR}/config.inc)

add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/hwengine.c"

        COMMAND "${EXECUTABLE_OUTPUT_PATH}/pas2c${CMAKE_EXECUTABLE_SUFFIX}"

        ARGS -n hwengine

             -i "${hedgewars_SOURCE_DIR}/hedgewars"

             #-i "~/xymengxy-webport/hedgewars"

             -o "${CMAKE_CURRENT_BINARY_DIR}"

             -a "${CMAKE_CURRENT_BINARY_DIR}"

        DEPENDS pas2c

    )

add_custom_target(engine_c ALL DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/hwengine.c")

add_subdirectory(rtl)

include_directories("${GLEW_INCLUDE_PATH}")

include_directories(rtl)

set(engine_src               uDebug.c             uLandTexture.c

        LuaPas.c             uFloat.c             uLocale.c

        SDLh.c               uGame.c              uMisc.c

        adler32.c            uGears.c             uMobile.c

        hwengine.c           uGearsHandlers.c     uRandom.c

        uAI.c                uGearsHandlersRope.c uRender.c

        uAIActions.c         uGearsHedgehog.c     uRenderUtils.c

        uAIAmmoTests.c       uGearsList.c         uScript.c

        uAILandMarks.c       uGearsRender.c       uSinTable.c

        uAIMisc.c            uGearsUtils.c        uSound.c

        uAmmos.c             uIO.c                uStats.c

        uCaptions.c          uInputHandler.c      uStore.c

        uChat.c              uLand.c              uTeams.c

        uCollisions.c        uLandGenMaze.c       uTextures.c

        uCommandHandlers.c   uLandGraphics.c      uTypes.c

        uCommands.c          uLandObjects.c       uUtils.c

        uConsole.c           uLandOutline.c       uVariables.c

        uConsts.c            uLandPainted.c       uVisualGears.c

        uCursor.c            uLandTemplates.c     uWorld.c

    )

set(engine_hdr               uGame.h              uFloat.h

        uLocale.h            SDLh.h               uMisc.h

        adler32.h            uDebug.h             uLandTexture.h

        LuaPas.h             uGears.h             uMobile.h

        uAI.h                uGearsHandlersRope.h uRender.h

        uAIActions.h         uGearsHedgehog.h     uRenderUtils.h

        uAIAmmoTests.h       uGearsList.h         uScript.h

        uGearsHandlers.h     uRandom.h

        uAILandMarks.h       uGearsRender.h       uSinTable.h

        uAIMisc.h            uGearsUtils.h        uSound.h

        uAmmos.h             uIO.h                uStats.h

        uCaptions.h          uInputHandler.h      uStore.h

        uChat.h              uLand.h              uTeams.h

        uCollisions.h        uLandGenMaze.h       uTextures.h

        uCommandHandlers.h   uLandGraphics.h      uTypes.h

        uCommands.h          uLandObjects.h       uUtils.h

        uConsole.h           uLandOutline.h       uVariables.h

        uConsts.h            uLandPainted.h       uVisualGears.h

        uCursor.h            uLandTemplates.h     uWorld.h

    )

add_executable(hwengine WIN32 ${engine_src})

add_dependencies(hwengine engine_c fpcrtl)