project(hedgewars)

#initialise cmake environment

cmake_minimum_required(VERSION 2.6.0)

if(CMAKE_VERSION VERSION_LESS "2.8")

    set(WARNING "WARNING: ")

    set(allow_parse_args FALSE)

else()

    set(WARNING WARNING)

    set(allow_parse_args TRUE)

endif()

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_SOURCE_DIR}/cmake_modules")

#possible cmake configuration

option(NOSERVER "Disable gameServer build [default: auto]" OFF)

option(NOPNG "Disable screenshoot compression [default: auto]" OFF)

#set this to ON when 2.1.0 becomes more widespread (and only for linux)

option(SYSTEM_PHYSFS "Use system physfs [default:off]" OFF)

option(BUILD_ENGINE_LIBRARY "Enable hwengine library [default: off]" OFF)

option(ANDROID "Enable Android build [default: off]" OFF)

option(MINIMAL_FLAGS "Respect system flags as much as possible [default: off]" OFF)

if(APPLE)

    option(NOAUTOUPDATE "Disable OS X Sparkle update checking" OFF)

endif()

set(FPFLAGS "" CACHE STRING "Additional Freepascal flags")

set(GHFLAGS "" CACHE STRING "Additional Haskell flags")

if(UNIX AND NOT APPLE)

    set(DATA_INSTALL_DIR "share/hedgewars" CACHE STRING "Resource folder path")

endif()

#detect Mercurial revision and init rev/hash information

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" HEDGEWARS_REVISION ${internal_version})

    string(REGEX REPLACE "([0-9a-zA-Z]+)(.*) [0-9]+(.*)" "\\1" HEDGEWARS_HASH ${internal_version})

    if(HGCHANGED)

        message(${WARNING} "You have uncommitted changes in your repository!")

    endif()

    #let's assume that if you have hg you might be interested in debugging

    set(default_build_type "DEBUG")

    #write down hash and rev for easy picking should hg be missing

    file(WRITE "${CMAKE_SOURCE_DIR}/share/version_info.txt" "Hedgewars versioning information, do not modify\nrev ${HEDGEWARS_REVISION}\nhash ${HEDGEWARS_HASH}\n")

else()

    set(default_build_type "RELEASE")

    # when compiling outside rev control, fetch revision and hash information from version_info.txt

    find_file(version_info version_info.txt PATH ${CMAKE_SOURCE_DIR}/share)

    if(version_info)

        file(STRINGS ${version_info} internal_version REGEX "rev")

        string(REGEX REPLACE "rev ([0-9]*)" "\\1" HEDGEWARS_REVISION ${internal_version})

        file(STRINGS ${version_info} internal_version REGEX "hash")

        string(REGEX REPLACE "hash ([a-zA-Z0-9]*)" "\\1" HEDGEWARS_HASH ${internal_version})

    else()

        message(${WARNING} "${CMAKE_SOURCE_DIR}/share/version_info.txt not found, revision information "

                           "will be incorrect!!! Contact your source provider to fix this!")

        set(HEDGEWARS_REVISION "0000")

        set(HEDGEWARS_HASH "unknown")

    endif()

endif()

#versioning

set(CPACK_PACKAGE_VERSION_MAJOR 0)

set(CPACK_PACKAGE_VERSION_MINOR 9)

set(CPACK_PACKAGE_VERSION_PATCH 19)

set(HEDGEWARS_PROTO_VER 44)

set(HEDGEWARS_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}")

message(STATUS "Building ${HEDGEWARS_VERSION}-r${HEDGEWARS_REVISION} (${HEDGEWARS_HASH})")

#where to build libs and bins

set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)

set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)

#resource paths

if(UNIX AND NOT APPLE)

    set(target_binary_install_dir "bin")

    set(target_library_install_dir "lib")

    string(SUBSTRING "${DATA_INSTALL_DIR}" 0 1 sharepath_start)

    if (NOT (${sharepath_start} MATCHES "/"))

        set(HEDGEWARS_DATADIR "${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/")

    else()

        set(HEDGEWARS_DATADIR "${DATA_INSTALL_DIR}/")

    endif()

    set(HEDGEWARS_FULL_DATADIR "${HEDGEWARS_DATADIR}")

else()

    set(target_binary_install_dir "./")

    if(APPLE)

        set(target_library_install_dir "../Frameworks/")

        set(CMAKE_INSTALL_PREFIX "Hedgewars.app/Contents/MacOS/")

        set(HEDGEWARS_DATADIR "../Resources/")

        set(HEDGEWARS_FULL_DATADIR "/Applications/${CMAKE_INSTALL_PREFIX}/${HEDGEWARS_DATADIR}")

    elseif(WIN32)

        set(target_library_install_dir "./")

        set(HEDGEWARS_DATADIR "./")

        set(HEDGEWARS_FULL_DATADIR "${CMAKE_INSTALL_PREFIX}/")

        set(CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/misc/winutils/")

        link_directories("${EXECUTABLE_OUTPUT_PATH}" "${CMAKE_SOURCE_DIR}/misc/winutils/bin")

    endif()

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 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 VERSION_EQUAL "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(CMAKE_C_FLAGS "${DYLIB_SMPEG} ${DYLIB_MIKMOD}")

        list(APPEND pascal_flags "-k${DYLIB_SMPEG}" "-k${DYLIB_MIKMOD}")

    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 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} VERSION_EQUAL ${current_macosx_version})

        if(minimum_macosx_version VERSION_EQUAL "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

    list(APPEND pascal_flags "-Ff~/Library/Frameworks")

    #set deployment target

    list(APPEND pascal_flags "-k-macosx_version_min" "-k${minimum_macosx_version}" "-XR${CMAKE_OSX_SYSROOT}")

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 "Build type (Debug/Release)" 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 "Build type (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 ${CMAKE_C_FLAGS}")

    set(CMAKE_C_FLAGS_RELEASE "-w -Os -fomit-frame-pointer ${CMAKE_C_FLAGS_RELEASE}")

    set(CMAKE_C_FLAGS_DEBUG "-Wall -O0 -g -DDEBUG ${CMAKE_C_FLAGS_DEBUG}")

    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()

#TODO: find out why we need this...

include(CheckCSourceCompiles)

set(CMAKE_REQUIRED_FLAG "-Wl,-z -Wl,noexecstack")

check_c_source_compiles("int main(void) { return 0; }" HAVE_NOEXECSTACK)

if(HAVE_NOEXECSTACK)

    list(APPEND pascal_flags "-k-z" "-knoexecstack")

    if(NOT ${MINIMAL_FLAGS})

        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_REQUIRED_FLAG}")

    endif()

endif()

unset(CMAKE_REQUIRED_FLAG)

#parse additional parameters

if(FPFLAGS OR GHFLAGS)

    if(${allow_parse_args})

        message(${WARNING} "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()

list(APPEND pascal_flags ${fpflags_parsed}        # user flags

                 "-vm4079,4080,4081"              # fpc output format

                 "-B"                             # compile all units

                 "-FE${PROJECT_BINARY_DIR}/bin"   # fpc output directory

                 "-Fl${PROJECT_BINARY_DIR}/bin"   # fpc linking directory (win/unix)

                 "-k-L${PROJECT_BINARY_DIR}/bin"  # ld linking directory (unix/osx)

                 "-Cs2000000"                     # stack size

                 "-vewnq"                         # fpc output verbosity

                 "-dDEBUGFILE"                    # macro for engine output

                 )

list(APPEND haskell_flags ${ghflags_parsed}       # user flags

                 "-O2"                            # optimise for faster code

                 )

#get BUILD_TYPE and enable/disable optimisation

message(STATUS "Using ${CMAKE_BUILD_TYPE} configuration")

if(CMAKE_BUILD_TYPE MATCHES "DEBUG")

    list(APPEND pascal_flags "-O-"                # disable all optimisations

                             "-g"                 # enable debug symbols

                             "-gl"                # add line info to bt

                             "-gv"                # allow valgrind

                             )

    list(APPEND haskell_flags "-Wall"             # all warnings

                              "-debug"            # debug mode

                              "-dcore-lint"       # internal sanity check

                              )

else()

    list(APPEND pascal_flags "-Os"                # optimise for size

                             "-Xs"                # strip binary

                             "-Si"                # turn on inlining

                             )

    list(APPEND haskell_flags "-w"                # no warnings

                              )

endif()

#server discovery

if(NOT NOSERVER)

    if(GHC)

        set(ghc_executable ${GHC})

    else()

        find_program(ghc_executable ghc)

    endif()

    if(ghc_executable)

        add_subdirectory(gameServer)

        message(STATUS "Found GHC: ${ghc_executable}")

    else()

        message(${WARNING} "Could NOT find GHC, server will not be built")

        set(HAVE_NETSERVER false)

    endif()

else()

    message(STATUS "Server will not be built per user request")

    set(HAVE_NETSERVER false)

endif()

#lua discovery

find_package(Lua)

if(LUA_FOUND)

    message(STATUS "Found LUA: ${LUA_DEFAULT}")

else()

    message(STATUS "LUA will be provided by the bundled sources")

    add_subdirectory(misc/liblua)

    #linking with liblua.a requires system readline

    list(APPEND pascal_flags "-k${EXECUTABLE_OUTPUT_PATH}/lib${LUA_LIBRARY}.a" "-k-lreadline")

endif()

#physfs discovery

if (${SYSTEM_PHYSFS})

    if (NOT PHYSFS_LIBRARY OR NOT PHYSFS_INCLUDE_DIR)

        find_package(PhysFS)

    endif()

    find_file(physfs_h physfs.h ${PHYSFS_INCLUDE_DIR})

    if(physfs_h)

        file(STRINGS ${physfs_h} physfs_majorversion REGEX "PHYSFS_VER_MAJOR[\t' ']+[0-9]+")

        file(STRINGS ${physfs_h} physfs_minorversion REGEX "PHYSFS_VER_MINOR[\t' ']+[0-9]+")

        file(STRINGS ${physfs_h} physfs_patchversion REGEX "PHYSFS_VER_PATCH[\t' ']+[0-9]+")

        string(REGEX MATCH "([0-9]+)" physfs_majorversion "${physfs_majorversion}")

        string(REGEX MATCH "([0-9]+)" physfs_minorversion "${physfs_minorversion}")

        string(REGEX MATCH "([0-9]+)" physfs_patchversion "${physfs_patchversion}")

        set(physfs_detected_ver "${physfs_majorversion}.${physfs_minorversion}.${physfs_patchversion}")

        if (physfs_detected_ver VERSION_LESS "2.1.0")

            message(FATAL_ERROR "PhysFS version is too old (dected ${physfs_detected_ver}, required 2.1.0)")

            set(physfs_too_old true)

        endif()

    endif()

    if (NOT PHYSFS_LIBRARY OR NOT PHYSFS_INCLUDE_DIR)

        message(FATAL_ERROR "Missing PhysFS! Rerun cmake with -DPHYSFS_SYSTEM=off to build the internal version")

    endif()

else()

    message(STATUS "PhysFS will be provided by the bundled sources")

    set(physfs_output_name "hw_physfs")

    add_subdirectory(misc/libphysfs)

    #-XLA is a beta fpc flag that renames libraries before passing them to the linker

    #we also have to pass PHYSFS_INTERNAL to satisfy windows runtime requirements

    #(should be harmless on other platforms)

    list(APPEND pascal_flags "-XLAphysfs=${physfs_output_name}" "-dPHYSFS_INTERNAL")

endif()

#

add_subdirectory(misc/libphyslayer)

#main engine

add_subdirectory(hedgewars)

#Android related build scripts

if(ANDROID)

    #run cmake -DANDROID=1 to enable this

    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()

# 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_NSIS_EXECUTABLES_DIRECTORY "${target_binary_install_dir}")

    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

    #temporary files

    "~"

    ".swp"

    #version control

    "\\\\.hg"

    #output binary/library

    "\\\\.exe$"

    "\\\\.a$"

    "\\\\.so$"

    "\\\\.dylib$"

    "\\\\.dll$"

    "\\\\.ppu$"

    "\\\\.o$"

    "\\\\.cxx$"

    #graphics

    "\\\\.xcf$"

    "\\\\.svg$"

    "\\\\.svgz$"

    "\\\\.psd$"

    "\\\\.sifz$"

    #misc

    "\\\\.core$"

    "\\\\.sh$"

    "\\\\.orig$"

    "\\\\.layout$"

    "\\\\.db$"

    "\\\\.dof$"

    #archives

    "\\\\.zip$"

    "\\\\.gz$"

    "\\\\.bz2$"

    "\\\\.tmp$"

    #cmake-configured files

    "hwconsts\\\\.cpp$"

    "config\\\\.inc$"

    "hwengine\\\\.desktop$"

    "Info\\\\.plist$"

    #other cmake generated files

    "Makefile"

    "Doxyfile"

    "CMakeFiles"

    "[dD]ebug$"

    "[rR]elease$"

    "CPack"

    "cmake_install\\\\.cmake$"

    "CMakeCache\\\\.txt$"

#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libtremor"

#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libfreetype"

#    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/liblua"

    "^${CMAKE_CURRENT_SOURCE_DIR}/misc/libopenalbridge"

    "^${CMAKE_CURRENT_SOURCE_DIR}/project_files/frontlib"

    "^${CMAKE_CURRENT_SOURCE_DIR}/project_files/promotional_art"

    "^${CMAKE_CURRENT_SOURCE_DIR}/project_files/cmdlineClient"

    "^${CMAKE_CURRENT_SOURCE_DIR}/tools/templates"

    "^${CMAKE_CURRENT_SOURCE_DIR}/bin/checkstack*"

    "^${CMAKE_CURRENT_SOURCE_DIR}/doc"

    "^${CMAKE_CURRENT_SOURCE_DIR}/templates"

    "^${CMAKE_CURRENT_SOURCE_DIR}/tmp"

    "^${CMAKE_CURRENT_SOURCE_DIR}/utils"

    "^${CMAKE_CURRENT_SOURCE_DIR}/share/hedgewars/Data/Maps/test"

    "^${CMAKE_CURRENT_SOURCE_DIR}/install_manifest.txt"

    "^${CMAKE_CURRENT_SOURCE_DIR}/CMakeCache.txt"

    "^${CMAKE_CURRENT_SOURCE_DIR}/hedgewars\\\\."

)

include(CPack)