cmake_minimum_required (VERSION 2.6.4)

include (CheckFunctionExists)

include (CheckCSourceCompiles)

include (CheckCXXSourceCompiles)

include (CheckIncludeFile)

project(FlightGear)

# We have some custom .cmake scripts not in the official distribution.

set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")

if(${CMAKE_VERSION} VERSION_GREATER 2.8.4)

    # use official include provided by latest CMake

    include(GNUInstallDirs)

else(${CMAKE_VERSION} VERSION_GREATER 2.8.4)

    # backward compatibility: use our own module for older cmake versions

    include(OldGNUInstallDirs)

endif(${CMAKE_VERSION} VERSION_GREATER 2.8.4)

set(CMAKE_DEBUG_POSTFIX          "d" CACHE STRING "add a postfix, usually d on windows")

set(CMAKE_RELEASE_POSTFIX        ""  CACHE STRING "add a postfix, usually empty on windows")

set(CMAKE_RELWITHDEBINFO_POSTFIX ""  CACHE STRING "add a postfix, usually empty on windows")

set(CMAKE_MINSIZEREL_POSTFIX     ""  CACHE STRING "add a postfix, usually empty on windows")

# read 'version' file into a variable (stripping any newlines or spaces)

file(READ version versionFile)

string(STRIP ${versionFile} FLIGHTGEAR_VERSION)

#packaging

if(EXISTS ${PROJECT_SOURCE_DIR}/.gitignore)

    file(READ .gitignore CPACK_SOURCE_IGNORE_FILES)

else()

    # clean tar-balls do not contain SCM (.git/.gitignore/...) files.

    set(CPACK_SOURCE_IGNORE_FILES

        "Makefile.am;~$;${CPACK_SOURCE_IGNORE_FILES}")

endif()

list (APPEND CPACK_SOURCE_IGNORE_FILES "${PROJECT_SOURCE_DIR}/.git;\\\\.gitignore")

# split version string into components, note CMAKE_MATCH_0 is the entire regexp match

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

set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1}) 

set(CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})

set(CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})

set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING")

set(CPACK_RESOURCE_FILE_README  "${PROJECT_SOURCE_DIR}/README")

set(CPACK_SOURCE_GENERATOR TBZ2)

set(CPACK_SOURCE_PACKAGE_FILE_NAME "flightgear-${FLIGHTGEAR_VERSION}" CACHE INTERNAL "tarball basename")

include (CPack)

if (FG_DATA_DIR)

    message(STATUS "Using explicit data-dir: ${FG_DATA_DIR}")

else()

    set(FG_DATA_DIR "${CMAKE_INSTALL_PREFIX}/lib/FlightGear" CACHE PATH "Default location where data files are located")

    message(STATUS "Using default data-dir:  ${FG_DATA_DIR}")

endif()

# Change the default build type to something fast

if(NOT CMAKE_BUILD_TYPE)

    set(CMAKE_BUILD_TYPE Release CACHE STRING

        "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."

        FORCE)

endif(NOT CMAKE_BUILD_TYPE)

if(NOT "$ENV{BUILD_ID}" STREQUAL "")

    set(HUDSON_BUILD_ID $ENV{BUILD_ID})

    set(HUDSON_BUILD_NUMBER $ENV{BUILD_NUMBER})

    message(STATUS "running under Hudson, build-number is ${HUDSON_BUILD_NUMBER}")

else()

    set(HUDSON_BUILD_NUMBER 0)

    set(HUDSON_BUILD_ID "none")

endif()

IF(APPLE)

    set(EVENT_INPUT_DEFAULT 1)

    find_library(CORESERVICES_LIBRARY CoreServices)

    find_library(COCOA_LIBRARY Cocoa)

    list(APPEND PLATFORM_LIBS ${COCOA_LIBRARY} ${CORESERVICES_LIBRARY})

elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")

    find_package(UDev)

    if(UDEV_FOUND)

        set(EVENT_INPUT_DEFAULT 1)

    endif(UDEV_FOUND)

endif()

find_package(Git)

if (GIT_FOUND)

    execute_process(COMMAND git --git-dir ${PROJECT_SOURCE_DIR}/.git rev-parse  HEAD

        OUTPUT_VARIABLE REVISION

        OUTPUT_STRIP_TRAILING_WHITESPACE)

    message(STATUS "Git revision is ${REVISION}")

else()

    set(REVISION "none")

endif()

option(LOGGING           "Set to OFF to build FlightGear without logging" ON)

option(SP_FDMS           "Set to ON to build FlightGear with special-purpose FDMs" OFF)

option(ENABLE_UIUC_MODEL "Set to ON to build FlightGear with UIUCModel FDM" OFF)

option(ENABLE_LARCSIM    "Set to ON to build FlightGear with LaRCsim FDM" OFF)

option(ENABLE_YASIM      "Set to ON to build FlightGear with YASIM FDM" ON)

option(ENABLE_JSBSIM     "Set to ON to build FlightGear with JSBSim FDM" ON)

option(ENABLE_FGADMIN    "Set to ON to build FlightGear with FGADMIN" ON)

option(EVENT_INPUT       "Set to ON to build FlightGear with event-based Input support" ${EVENT_INPUT_DEFAULT})

option(ENABLE_LIBSVN     "Set to ON to build FlightGear/terrasync with libsvnclient support" ON)

option(ENABLE_RTI        "Set to ON to build SimGear with RTI support" OFF)

option(WITH_FGPANEL      "Set to ON to build the fgpanel application" ON)

option(JPEG_FACTORY      "Enable JPEG-factory support" OFF)

option(ENABLE_TESTS      "Set to OFF to disable building test applications" ON)

if (MSVC)

    GET_FILENAME_COMPONENT(PARENT_DIR ${PROJECT_SOURCE_DIR} PATH)

    if (CMAKE_CL_64)

        SET(TEST_3RDPARTY_DIR "${PARENT_DIR}/3rdparty.x64")

    else (CMAKE_CL_64)

        SET(TEST_3RDPARTY_DIR "${PARENT_DIR}/3rdparty")

    endif (CMAKE_CL_64)

    if (EXISTS ${TEST_3RDPARTY_DIR})

        set(MSVC_3RDPARTY_ROOT ${PARENT_DIR} CACHE PATH "Location where the third-party dependencies are extracted")

    else (EXISTS ${TEST_3RDPARTY_DIR})

        set(MSVC_3RDPARTY_ROOT NOT_FOUND CACHE PATH "Location where the third-party dependencies are extracted")

    endif (EXISTS ${TEST_3RDPARTY_DIR})

        list(APPEND PLATFORM_LIBS "winmm.lib")

else (MSVC)

    set(MSVC_3RDPARTY_ROOT NOT_FOUND CACHE PATH "Location where the third-party dependencies are extracted")

endif (MSVC)

if(LOGGING)

    # nothing

else()

    set(FG_NDEBUG 1)

endif()

if(SP_FDMS)

    set(ENABLE_SP_FDM 1)

endif()

if (MSVC AND MSVC_3RDPARTY_ROOT)

    message(STATUS "3rdparty files located in ${MSVC_3RDPARTY_ROOT}")

    set( OSG_MSVC "msvc" )

    if (${MSVC_VERSION} EQUAL 1600)

        set( OSG_MSVC ${OSG_MSVC}100 )

    else (${MSVC_VERSION} EQUAL 1600)

        set( OSG_MSVC ${OSG_MSVC}90 )

    endif (${MSVC_VERSION} EQUAL 1600)

    if (CMAKE_CL_64)

        set( OSG_MSVC ${OSG_MSVC}-64 )

        set( MSVC_3RDPARTY_DIR 3rdParty.x64 )

		set( BOOST_LIB lib64 )

    else (CMAKE_CL_64)

        set( MSVC_3RDPARTY_DIR 3rdParty )

		set( BOOST_LIB lib )

    endif (CMAKE_CL_64)

    set (CMAKE_LIBRARY_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/SimGear/lib $(BOOST_ROOT)/$(BOOST_LIB) )

    set (CMAKE_INCLUDE_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/SimGear/include)

    set (BOOST_ROOT         ${MSVC_3RDPARTY_ROOT}/boost_1_44_0)

    set (OPENAL_INCLUDE_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)

    set (ALUT_INCLUDE_DIR   ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)

    set (OPENAL_LIBRARY_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib)

endif (MSVC AND MSVC_3RDPARTY_ROOT)

if(EVENT_INPUT)

    message(STATUS "checking event-based Input")

    IF(APPLE)

    elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")

        if(NOT UDEV_FOUND)

            message(WARNING "UDev not found, event input is disabled!")

            set(EVENT_INPUT 0)

        else()

            set(EVENT_INPUT_LIBRARIES ${UDEV_LIBRARIES})

        endif()

    else()

        message(WARNING "event input is not supported on this platform yet")

    endif()

    # Keep PLIB INPUT enabled as long as EventInput does not replace current joystick configurations.

    set(ENABLE_PLIB_JOYSTICK 1)

else(EVENT_INPUT)

    set(ENABLE_PLIB_JOYSTICK 1)

endif(EVENT_INPUT)

# check required dependencies

find_package(Boost   REQUIRED)

find_package(ZLIB    REQUIRED)

find_package(Threads REQUIRED)

find_package(OpenGL  REQUIRED)

find_package(OpenAL  REQUIRED)

find_package(ALUT    REQUIRED)

find_package(OpenSceneGraph 3.0.0 REQUIRED osgText osgSim osgDB osgParticle osgFX osgUtil osgViewer osgGA)

if(ENABLE_FGADMIN)

    find_package(FLTK)

    if ( FLTK_FOUND )

        if ( X11_Xinerama_FOUND )

            message(STATUS "Found X11_Xinerama...")

            list(APPEND FLTK_LIBRARIES ${X11_Xinerama_LIB})

        endif()

        if ( X11_Xft_FOUND )

            message(STATUS "Found X11_Xft...")

            list(APPEND FLTK_LIBRARIES ${X11_Xft_LIB})

        endif()

        message(STATUS "Using FLTK_LIBRARIES for fgadmin: ${FLTK_LIBRARIES}")

    endif ( FLTK_FOUND )

endif(ENABLE_FGADMIN)

if(ENABLE_LIBSVN)

    find_package(SvnClient)

    if(LIBSVN_FOUND)

        message(STATUS "libsvn found, enabling in terrasync")

        set(HAVE_SVN_CLIENT_H 1)

        set(HAVE_LIBSVN_CLIENT_1 1)

    endif(LIBSVN_FOUND)

endif(ENABLE_LIBSVN)

find_package(PLIB REQUIRED puaux pu js fnt)

# FlightGear and SimGear versions need to match

find_package(SimGear ${FLIGHTGEAR_VERSION} REQUIRED)

if (JPEG_FACTORY)

    # check simgear was built with JPEG-factory support

    find_package(JPEG REQUIRED)

    include_directories(${JPEG_INCLUDE_DIR})

    set(CMAKE_REQUIRED_INCLUDES

        ${SIMGEAR_INCLUDE_DIR}

        ${JPEG_INCLUDE_DIR}

        ${OPENSCENEGRAPH_INCLUDE_DIRS})

    check_cxx_source_compiles(

        "#include <simgear/screen/jpgfactory.hxx>

        int main()    { return 0; } "

        FG_JPEG_SERVER)

    if (NOT FG_JPEG_SERVER)

        message(STATUS "JPEG server support requested, but SimGear was built without JPEG support")

    endif()

endif()

check_include_file(unistd.h   HAVE_UNISTD_H)

check_include_file(sys/time.h HAVE_SYS_TIME_H)

check_include_file(windows.h  HAVE_WINDOWS_H)

if(ENABLE_RTI)

    find_package(RTI)

    if(RTI_FOUND)

        set(FG_HAVE_HLA 1)

    endif(RTI_FOUND)

endif(ENABLE_RTI)

if(CMAKE_COMPILER_IS_GNUCXX)

    set(WARNING_FLAGS_CXX "-Wall")

    set(WARNING_FLAGS_C   "-Wall")

endif(CMAKE_COMPILER_IS_GNUCXX)

if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang") 

   set (WARNING_FLAGS_CXX "-Wall -Wno-overloaded-virtual")

   set (WARNING_FLAGS_C   "-Wall")

endif() 

if(WIN32)

    if(MSVC)

        # turn off various warnings

        # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)

        #     SET(WARNING_FLAGS "${WARNING_FLAGS} /wd${warning}")

        # endforeach(warning)

        set(MSVC_FLAGS "-DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS")

        if (${MSVC_VERSION} EQUAL 1600)

            set( MSVC_LD_FLAGS "/FORCE:MULTIPLE" )

        endif (${MSVC_VERSION} EQUAL 1600)

    endif(MSVC)

    set(NOMINMAX 1)

endif(WIN32)

set (BOOST_CXX_FLAGS "-DBOOST_MULTI_INDEX_DISABLE_SERIALIZATION -DBOOST_BIMAP_DISABLE_SERIALIZATION")

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS_C} ${MSVC_FLAGS} -D_REENTRANT")

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS_CXX} ${MSVC_FLAGS} -D_REENTRANT ${BOOST_CXX_FLAGS}")

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LD_FLAGS}")

include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS}

    ${Boost_INCLUDE_DIRS}

    ${ZLIB_INCLUDE_DIR}

    ${ALUT_INCLUDE_DIR}

    ${OPENGL_INCLUDE_DIR}

    ${OPENAL_INCLUDE_DIR}

    ${SIMGEAR_INCLUDE_DIR}

    ${PLIB_INCLUDE_DIR} )

include_directories(${PROJECT_SOURCE_DIR}/src)

# following is needed, because config.h is include 'bare', whereas

# version.h is included as <Include/version.h> - this should be cleaned up

include_directories(${PROJECT_BINARY_DIR}/src)

include_directories(${PROJECT_BINARY_DIR}/src/Include)

add_definitions(-DHAVE_CONFIG_H)

check_function_exists(mkfifo HAVE_MKFIFO)

# configure a header file to pass some of the CMake settings

# to the source code

configure_file (

    "${PROJECT_SOURCE_DIR}/src/Include/config_cmake.h.in"

    "${PROJECT_BINARY_DIR}/src/Include/config.h"

)

#and the same for the version header

configure_file (

    "${PROJECT_SOURCE_DIR}/src/Include/version.h.cmake-in"

    "${PROJECT_BINARY_DIR}/src/Include/version.h"

)

add_subdirectory(src)

add_subdirectory(utils)

add_subdirectory(man)

#-----------------------------------------------------------------------------

### uninstall target

#-----------------------------------------------------------------------------

CONFIGURE_FILE(

    "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules/cmake_uninstall.cmake.in"

    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"

    IMMEDIATE @ONLY)

ADD_CUSTOM_TARGET(uninstall

    "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")