project(hedgewars)

#initialise cmake environment
cmake_minimum_required(VERSION 2.6.0 FATAL_ERROR)
cmake_policy(VERSION 2.6)
FOREACH(hwpolicy CMP0003 CMP0012 CMP0017)
    IF(POLICY ${hwpolicy})
        CMAKE_POLICY(SET ${hwpolicy} NEW)
    ENDIF()
ENDFOREACH()
#use available modules, fallback to ours if not present (CMP0017 helps)
set(CMAKE_MODULE_PATH "${CMAKE_ROOT}/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules")

#set some default values
option(NOREVISION "Build Hedgewars without revision information" OFF)

option(NOSERVER "Disable gameServer build [default: auto]" OFF)
option(NOPNG "Disable screenshoot compression [default: auto]" OFF)
option(NOVIDEOREC "Disable video recording [default: auto]" OFF)


option(WEBGL "Enable WebGL build (implies NOPASCAL) [default: off]" OFF)
option(NOPASCAL "Compile hwengine as native C [default: off]" ${WEBGL})
option(LIBENGINE "Enable hwengine library [default: off]" OFF)

option(ANDROID "Enable Android build [default: off]" OFF)
option(NOAUTOUPDATE "Disable OS X Sparkle update checking" OFF)
option(CROSSAPPLE "Enable OSX when not on OSX [default: off]" OFF)
option(MINIMAL_FLAGS "Respect system flags as much as possible [default: off]" OFF)


#detect Mercurial revision (if present)
IF(NOT NOREVISION)
    set(default_build_type "DEBUG")
    set(version_suffix "-development_version")
    set(HW_DEV true)
    FIND_PROGRAM(HGCOMMAND hg)
    IF(HGCOMMAND AND (EXISTS ${CMAKE_SOURCE_DIR}/.hg))
        execute_process(COMMAND ${HGCOMMAND} identify -in
                        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
                        OUTPUT_VARIABLE internal_version
                        ERROR_QUIET
                    )
        #check local repo status
        STRING(REGEX REPLACE "[^+]" "" HGCHANGED ${internal_version})

        STRING(REGEX REPLACE "[0-9a-zA-Z]+(.*) ([0-9]+)(.*)" "\\2" revision_number ${internal_version})
        STRING(REGEX REPLACE "([0-9a-zA-Z]+)(.*) [0-9]+(.*)" "\\1" revision_hash ${internal_version})

        MESSAGE(STATUS "Building revision ${revision_number} from hash ${revision_hash} ${HGCHANGED}")
        IF(HGCHANGED)
            MESSAGE(WARNING "Notice: you have uncommitted changes in your repository")
        ENDIF()
        set(version_suffix "-${revision_number}${HGCHANGED}")
    ENDIF()
ELSE(NOT NOREVISION)
    set(default_build_type "RELEASE")
    set(HWDEV false)
    MESSAGE(STATUS "Building distributable version")
ENDIF(NOT NOREVISION)


#versioning
set(CPACK_PACKAGE_VERSION_MAJOR 0)
set(CPACK_PACKAGE_VERSION_MINOR 9)
set(CPACK_PACKAGE_VERSION_PATCH 19${version_suffix})
set(HEDGEWARS_PROTO_VER 44)
set(HEDGEWARS_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}")


#bundle .app setup
if(APPLE OR CROSSAPPLE)
    #paths for creating the bundle
    set(bundle_name Hedgewars.app)
    set(frameworks_dir ${bundle_name}/Contents/Frameworks/)
    set(CMAKE_INSTALL_PREFIX ${bundle_name}/Contents/MacOS/)
    set(DATA_INSTALL_DIR "../Resources/")
    set(target_dir ".")
    set(minimum_macosx_version "10.6")
else()
    set(target_dir "bin")
endif()

if(APPLE)
    set(CMAKE_FIND_FRAMEWORK "FIRST")

    #what system are we building for
    set(minimum_macosx_version $ENV{MACOSX_DEPLOYMENT_TARGET})

    #detect on which system we are: if sw_vers cannot be found for any reason (re)use minimum_macosx_version
    find_program(sw_vers sw_vers)
    if(sw_vers)
        execute_process(COMMAND ${sw_vers} "-productVersion"
                        OUTPUT_VARIABLE current_macosx_version
                        OUTPUT_STRIP_TRAILING_WHITESPACE)
        string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" current_macosx_version ${current_macosx_version})
    else()
        if(NOT minimum_macosx_version)
            message(FATAL_ERROR "sw_vers not found! Need explicit MACOSX_DEPLOYMENT_TARGET variable set")
        else()
            message(WARNING "sw_vers not found! Fallback to MACOSX_DEPLOYMENT_TARGET variable")
            set(current_macosx_version ${minimum_macosx_version})
        endif()
    endif()

    #if nothing is set, we deploy only for the current system
    if(NOT minimum_macosx_version)
        set(minimum_macosx_version ${current_macosx_version})
    endif()

    #lower systems don't have enough processing power anyway
    if (minimum_macosx_version LESS "10.4")
        message(FATAL_ERROR "Hedgewars is not supported on Mac OS X pre-10.4")
    endif()

    #workaround for http://playcontrol.net/ewing/jibberjabber/big_behind-the-scenes_chang.html#SDL_mixer (Update 2)
    if(current_macosx_version MATCHES "10.4")
        find_package(SDL_mixer REQUIRED)
        set(DYLIB_SMPEG "-dylib_file @loader_path/Frameworks/smpeg.framework/Versions/A/smpeg:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/smpeg.framework/Versions/A/smpeg")
        set(DYLIB_MIKMOD "-dylib_file @loader_path/Frameworks/mikmod.framework/Versions/A/mikmod:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/mikmod.framework/Versions/A/mikmod")
        set(pascal_flags "-k${DYLIB_SMPEG}" "-k${DYLIB_MIKMOD}" ${pascal_flags})
        set(CMAKE_C_FLAGS "${DYLIB_SMPEG}" "${DYLIB_MIKMOD}" ${CMAKE_C_FLAGS})
    endif()

    #CMAKE_OSX_ARCHITECTURES and CMAKE_OSX_SYSROOT need to be set for universal binary and correct linking
    if(NOT CMAKE_OSX_ARCHITECTURES)
        if(current_macosx_version LESS "10.6")
            if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "powerpc*")
                set(CMAKE_OSX_ARCHITECTURES "ppc7400")
            else()
                set(CMAKE_OSX_ARCHITECTURES "i386")
            endif()
        else()
            set(CMAKE_OSX_ARCHITECTURES "x86_64")
        endif()
    endif()

    #CMAKE_OSX_SYSROOT is set at the system version we are supposed to build on
    #we need to provide the correct one when host and target differ
    if(NOT ${minimum_macosx_version} MATCHES ${current_macosx_version})
        if(minimum_macosx_version MATCHES "10.4")
            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX10.4u.sdk/")
            set(CMAKE_C_COMPILER "gcc-4.0")
            set(CMAKE_CXX_COMPILER "g++-4.0")
        else()
            string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" sdk_version ${minimum_macosx_version})
            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX${sdk_version}.sdk/")
        endif()
    endif()

    #add user framework directory, other paths can be passed via FPFLAGS
    set(pascal_flags "-Ff~/Library/Frameworks" ${pascal_flags})
    #set deployment target
    set(pascal_flags "-k-macosx_version_min" "-k${minimum_macosx_version}" "-XR${CMAKE_OSX_SYSROOT}" ${pascal_flags})

    message(STATUS "Build system: Mac OS X ${current_macosx_version} with C compiler: ${CMAKE_C_COMPILER}")
    message(STATUS "Target system: Mac OS X ${minimum_macosx_version} for architecture(s): ${CMAKE_OSX_ARCHITECTURES}")
endif(APPLE)


#when build type is not specified, assume Debug/Release according to build version information
if (CMAKE_BUILD_TYPE)
    string (TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE)
    if ( NOT( (CMAKE_BUILD_TYPE MATCHES "RELEASE") OR (CMAKE_BUILD_TYPE MATCHES "DEBUG") ) )
        set (CMAKE_BUILD_TYPE ${default_build_type} CACHE STRING "Only 'Debug' or 'Release' options are allowed." FORCE)
        message (STATUS "Unknown build type, using default (${default_build_type})")
    endif ()
else (CMAKE_BUILD_TYPE)
    set (CMAKE_BUILD_TYPE ${default_build_type} CACHE STRING "Choose the build type, options are: Debug Release." FORCE)
endif (CMAKE_BUILD_TYPE)

#set default flags values for all projects (unless MINIMAL_FLAGS is true)
if(NOT MINIMAL_FLAGS)
    set(CMAKE_C_FLAGS "-pipe")
    set(CMAKE_C_FLAGS_RELEASE "-w -Os -fomit-frame-pointer")
    set(CMAKE_C_FLAGS_DEBUG "-Wall -O0 -g -DDEBUG")
    set(CMAKE_CXX_FLAGS ${CMAKE_C_FLAGS})
    set(CMAKE_CXX_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
    set(CMAKE_CXX_FLAGS_DEBUG ${CMAKE_C_FLAGS_DEBUG})
else()
    #CMake adds a lot of additional configuration flags, so let's clear them up
    set(CMAKE_C_FLAGS_RELEASE "")
    set(CMAKE_C_FLAGS_DEBUG "-Wall -DDEBUG")
    set(CMAKE_CXX_FLAGS_RELEASE "")
    set(CMAKE_CXX_FLAGS_DEBUG "-Wall -DDEBUG")
endif()

#parse additional parameters
if(FPFLAGS OR GHFLAGS)
    math(EXPR cmake_version "${CMAKE_MAJOR_VERSION}*10000 + ${CMAKE_MINOR_VERSION}*100 + ${CMAKE_PATCH_VERSION}")
    if(cmake_version LESS "020800")
        message(STATUS "FPFLAGS and GHFLAGS are available only when using CMake >= 2.8")
    else()
        separate_arguments(fpflags_parsed UNIX_COMMAND ${FPFLAGS})
        separate_arguments(ghflags_parsed UNIX_COMMAND ${GHFLAGS})
    endif()
endif()

set(pascal_flags ${fpflags_parsed} "-vm4079,4080,4081" "-B" "-FE../bin" "-Cs2000000" "-vewnq" "-dDEBUGFILE" ${pascal_flags})
set(haskell_flags "-O2" ${ghflags_parsed} ${haskell_flags})

#get BUILD_TYPE and enable/disable optimisation
if(CMAKE_BUILD_TYPE MATCHES "DEBUG")
    message(STATUS "Building Debug flavour")
    set(pascal_flags "-O-" "-g" "-gl" "-gv" ${pascal_flags})
    set(haskell_flags "-Wall" "-debug" "-dcore-lint" "-fno-warn-unused-do-bind" ${haskell_flags})
else()
    message(STATUS "Building Release flavour")
#    set(pascal_flags "-O3" "-OpPENTIUM4" "-CfSSE3" "-Xs" "-Si" ${pascal_flags})
    set(pascal_flags "-Os" "-Ooregvar" "-Xs" "-Si" ${pascal_flags})
    set(haskell_flags "-w" "-fno-warn-unused-do-bind" ${haskell_flags})
endif()


#finish setting paths
if(DEFINED DATA_INSTALL_DIR)
    set(SHAREPATH ${DATA_INSTALL_DIR}/hedgewars/)
else()
    set(SHAREPATH share/hedgewars/)
endif()
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${EXECUTABLE_OUTPUT_PATH})
if(WIN32)
    set(CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/misc/winutils/")
    link_directories("${EXECUTABLE_OUTPUT_PATH}" "${CMAKE_SOURCE_DIR}/misc/winutils/bin")
endif(WIN32)


#Haskell compiler discovery (for server and engine in c)
if((NOT NOSERVER) OR NOPASCAL)
    if(GHC)
        set(ghc_executable ${GHC})
    else()
        find_program(ghc_executable ghc)
    endif()

    if(ghc_executable)
        exec_program(${ghc_executable} ARGS "-V" OUTPUT_VARIABLE ghc_version_long)
        string(REGEX REPLACE ".*([0-9]+\\.[0-9]+\\.[0-9]+)" "\\1" ghc_version "${ghc_version_long}")
        message(STATUS "Found GHC: ${ghc_executable} (version ${ghc_version})")
    else()
        message(STATUS "Could NOT find GHC, needed by gameServer and pas2c")
    endif()
endif()


#check gameServer
if((ghc_executable) AND (NOT NOSERVER) AND (NOT WEBGL))
    set(HAVE_NETSERVER true)
    add_subdirectory(gameServer)
else()
    message(STATUS "Skipping gameServer target")
    set(HAVE_NETSERVER false)
endif()


#lua discovery
find_package(Lua)
if(LUA_FOUND AND (NOT WEBGL))
    message(STATUS "Found LUA: ${LUA_DEFAULT}")
else()
    message(STATUS "Using internal LUA library")
    add_subdirectory(misc/liblua)
    #linking with liblua.a requires system readline
    set(pascal_flags "-k${EXECUTABLE_OUTPUT_PATH}/lib${LUA_LIBRARY}.a" "-k-lreadline" ${pascal_flags})
endif()


#physfs library
add_subdirectory(misc/physfs)

#frontend library
add_subdirectory(project_files/frontlib)


if(NOPASCAL)
    if (NOT ghc_executable)
        message(FATAL_ERROR "A Haskell compiler is required to build engine in C")
    endif()
    #pascal to c converter
    add_subdirectory(tools/pas2c)
    add_subdirectory(project_files/hwc)
else()
    #main pascal engine
    add_subdirectory(hedgewars)
endif()

if(WEBGL)
    #WEBGL deps
else(WEBGL)
    #Android related build scripts
    if(ANDROID)
        add_subdirectory(project_files/Android-build)
    endif()

    #TODO: when ANDROID, BUILD_ENGINE_LIBRARY should be set
    if(NOT ANDROID)
        add_subdirectory(bin)
        add_subdirectory(QTfrontend)
        add_subdirectory(share)
        add_subdirectory(tools)
    endif()
endif(WEBGL)



# CPack variables
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Hedgewars, a free turn-based strategy")
set(CPACK_PACKAGE_VENDOR "Hedgewars Project")
set(CPACK_PACKAGE_FILE_NAME "hedgewars-${HEDGEWARS_VERSION}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "hedgewars-src-${HEDGEWARS_VERSION}")
set(CPACK_SOURCE_GENERATOR "TBZ2")
set(CPACK_PACKAGE_EXECUTABLES "hedgewars" "hedgewars")
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/COPYING")
set(CPACK_PACKAGE_INSTALL_DIRECTORY "Hedgewars ${HEDGEWARS_VERSION}")

if(WIN32 AND NOT UNIX)
    set(CPACK_NSIS_DISPLAY_NAME "Hedgewars")
    set(CPACK_NSIS_HELP_LINK "http://www.hedgewars.org/")
    set(CPACK_NSIS_URL_INFO_ABOUT "http://www.hedgewars.org/")
    set(CPACK_NSIS_CONTACT "unC0Rr@gmail.com")
    set(CPACK_NSIS_MODIFY_PATH OFF)
    set(CPACK_GENERATOR "ZIP;NSIS")
    set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "hedgewars")
else(WIN32 AND NOT UNIX)
    set(CPACK_STRIP_FILES "bin/hedgewars;bin/hwengine")
endif(WIN32 AND NOT UNIX)

set(CPACK_SOURCE_IGNORE_FILES
    "~"
    "\\\\.hg"
    "\\\\.svn"
    "\\\\.exe$"
    "\\\\.a$"
    "\\\\.dll$"
    "\\\\.xcf$"
    "\\\\.cxx$"
    "\\\\.db$"
    "\\\\.dof$"
    "\\\\.layout$"
    "\\\\.zip$"
    "\\\\.gz$"
    "\\\\.bz2$"
    "\\\\.tmp$"
    "\\\\.core$"
    "\\\\.sh$"
    "\\\\.sifz$"
    "\\\\.svg$"
    "\\\\.svgz$"
    "\\\\.ppu$"
    "\\\\.psd$"
    "\\\\.o$"
    "Makefile"
    "Doxyfile"
    "CMakeFiles"
    "debug"
    "release$"
    "Debug$"
    "Release$"
    "proto\\\\.inc$"
    "hwconsts\\\\.cpp$"
    "playlist\\\\.inc$"
    "CPack"
    "cmake_install\\\\.cmake$"
    "config\\\\.inc$"
    "hwengine\\\\.desktop$"
    "CMakeCache\\\\.txt$"
#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libopenalbridge"
#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libfreetype"
    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/liblua"
#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libtremor"
    "^${CMAKE_CURRENT_SOURCE_DIR}/project_files/HedgewarsMobile/"
    "^${CMAKE_CURRENT_SOURCE_DIR}/bin/[a-z]"
    "^${CMAKE_CURRENT_SOURCE_DIR}/tools/templates"
    "^${CMAKE_CURRENT_SOURCE_DIR}/doc"
    "^${CMAKE_CURRENT_SOURCE_DIR}/templates"
    "^${CMAKE_CURRENT_SOURCE_DIR}/Graphics"
    "^${CMAKE_CURRENT_SOURCE_DIR}/realtest"
    "^${CMAKE_CURRENT_SOURCE_DIR}/tmp"
    "^${CMAKE_CURRENT_SOURCE_DIR}/utils"
    "^${CMAKE_CURRENT_SOURCE_DIR}/share/hedgewars/Data/Maps/test"
    "^${CMAKE_CURRENT_SOURCE_DIR}/share/hedgewars/Data/Themes/ethereal"
    "^${CMAKE_CURRENT_SOURCE_DIR}/install_manifest.txt"
    "^${CMAKE_CURRENT_SOURCE_DIR}/CMakeCache.txt"
    "^${CMAKE_CURRENT_SOURCE_DIR}/hedgewars\\\\."
)

include(CPack)