cmake_minimum_required(VERSION 2.6)
cmake_policy(VERSION 2.6.4)

enable_testing()
include(CMakeDependentOption)

project(GiGi)

set(CMAKE_VERBOSE_MAKEFILE true)

########################################
# Configuration                        #
########################################
set(GIGI_VERSION 0.8.0)

list(APPEND CMAKE_MODULE_PATH ${CMAKE_HOME_DIRECTORY}/cmake)

set(MINIMUM_BOOST_VERSION 1.47.0)

option(BUILD_SHARED_LIBS "Enables building of shared libraries; OFF implies static libraries." ON)

cmake_dependent_option(USE_STATIC_LIBS "Favour static linking of depencendies." OFF BUILD_SHARED_LIBS OFF)

if (BUILD_DEBUG)
    set(BUILD_RELEASE OFF)
else ()
    set(BUILD_RELEASE ON)
endif ()

if (DEFINED BUILD_STATIC OR DEFINED BUILD_SHARED)
    message(FATAL "BUILD_STATIC and BUILD_SHARED are removed in favour of BUILD_SHARED_LIBS.")
    return()
endif ()

include(Util)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

option(USE_DEVIL
       "Enables optional use of the DevIL image-loading library.  This should only be enabled if you need to load image files other than PNG, JPEG, and TIFF."
       OFF)

option(BUILD_SDL_DRIVER
       "Builds GG SDL support (the GiGiSDL library)."
       ON)
option(BUILD_OGRE_DRIVER
       "Builds GG Ogre support (the GiGiOgre library)."
       ON)
option(BUILD_OGRE_OIS_PLUGIN
       "Builds OIS input plugin for the GiGiOgre library."
       ON)
option(BUILD_DOCUMENTATION
       "Builds HTML documentation (requires Doxygen)."
       OFF)
option(BUILD_DEVEL_PACKAGE
       "Install development files."
       ON)

if (NOT DEFINED USE_STATIC_LIBS)
    add_definitions(-DBOOST_ALL_DYN_LINK)
endif ()

if (MSVC)
    set (CMAKE_STATIC_LIBRARY_PREFIX "lib")
    set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /NODEFAULTLIB:LIBCMT")
    set (CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} /NODEFAULTLIB:LIBCMT")
endif ()

include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})


########################################
# Dependencies                         #
########################################
set(Boost_USE_STATIC_LIBS ${USE_STATIC_LIBS})
find_package(Boost ${MINIMUM_BOOST_VERSION} COMPONENTS chrono date_time filesystem signals system thread REQUIRED)

include_directories(${Boost_INCLUDE_DIRS})

set(int_have_devil 0)
set(int_have_jpeg 0)
set(int_have_png 0)
set(int_have_tiff 0)
if (USE_DEVIL)
    find_package(DevIL REQUIRED)

    if (IL_FOUND)
        set(int_have_devil 1)
    endif ()

    include_directories(${IL_INCLUDE_DIR})
else ()
    find_package(JPEG)
    find_package(PNG)
    find_package(TIFF)

    if (JPEG_FOUND)
        include_directories(${JPEG_INCLUDE_DIR})
        set(int_have_jpeg 1)
    endif ()
    if (PNG_FOUND)
        include_directories(${PNG_INCLUDE_DIR})
        set(int_have_png 1)
    endif ()
    if (TIFF_FOUND)
        include_directories(${TIFF_INCLUDE_DIR})
        set(int_have_tiff 1)
    endif ()

endif ()

find_package(OpenGL REQUIRED)
find_package(Freetype REQUIRED)

if (NOT OPENGL_GLU_FOUND)
    message(FATAL_ERROR "OpenGL GLU library not found.")
endif ()

include_directories(
    ${OPENGL_INCLUDE_DIR}
    ${FREETYPE_INCLUDE_DIRS}
)

########################################
# Header Generation                    #
########################################
configure_file(
    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Config.h.in
    ${CMAKE_CURRENT_BINARY_DIR}/GG/Config.h
    @ONLY
)


########################################
# Installed Files                      #
########################################
if (BUILD_DEVEL_PACKAGE)
    install(
        DIRECTORY GG
        DESTINATION include
        COMPONENT COMPONENT_GIGI_DEVEL
        PATTERN ".svn" EXCLUDE
        PATTERN "*~" EXCLUDE
    )
endif ()


########################################
# Recurse Into Sources                 #
########################################
add_subdirectory(src)

########################################
# Documentation                        #
########################################
if (BUILD_DOCUMENTATION)
    find_package(Doxygen REQUIRED)
endif ()

if (DOXYGEN_FOUND)
    set(GG_DOC_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/doc")
    set(GG_DOC_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/doc")
    set(GG_DOC_STAMP_DIR "${GG_DOC_OUTPUT_DIR}/GG")
    configure_file(
        ${GG_DOC_SOURCE_DIR}/Doxyfile.in
        ${GG_DOC_OUTPUT_DIR}/Doxyfile
        @ONLY
        IMMEDIATE
    )
    add_custom_command (
        OUTPUT ${GG_DOC_STAMP_DIR}/index.html
        COMMAND ${DOXYGEN_EXECUTABLE} ${GG_DOC_OUTPUT_DIR}/Doxyfile
        MAIN_DEPENDENCY ${GG_DOC_OUTPUT_DIR}/Doxyfile ${GG_DOC_SOURCE_DIR}/Doxyfile.in
        DEPENDS ${GG_DOC_SOURCE_DIR}/GGDoc.txt
        COMMENT "Generating documentation with Doxygen" VERBATIM
    )
    add_custom_target (doc ALL DEPENDS ${GG_DOC_STAMP_DIR}/index.html)
    if (BUILD_DEVEL_PACKAGE)
        install(
            DIRECTORY ${GG_DOC_STAMP_DIR}
            DESTINATION doc
        )
    endif ()
endif ()


########################################
# Packaging                            #
########################################
set(CPACK_PACKAGE_VERSION ${GIGI_VERSION})
set(CPACK_PACKAGE_VENDOR "T. Zachary Laine")
set(CPACK_PACKAGE_CONTACT ${CPACK_PACKAGE_VENDOR})
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "A C++ OpenGL GUI library.")
set(CPACK_RESOURCE_FILE_LICENSE ${CMAKE_CURRENT_SOURCE_DIR}/COPYING)
set(CPACK_SYSTEM_NAME ${CMAKE_SYSTEM_NAME})
set(CPACK_PACKAGE_NAME ${CMAKE_PROJECT_NAME})
set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${CPACK_SYSTEM_NAME}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME ${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-src)

# RPM-specific settings
set(CPACK_RPM_PACKAGE_LICENSE LGPL)
set(CPACK_RPM_PACKAGE_REQUIRES)

list(APPEND CPACK_RPM_PACKAGE_REQUIRES Mesa freetype2)
list(APPEND CPACK_RPM_PACKAGE_REQUIRES gigi=${GIGI_VERSION})

if (BUILD_SDL_DRIVER)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES SDL>=1.2)
endif ()

if (BUILD_OGRE_OIS_PLUGIN)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES ogre>=1.6 libois1>=1.2)
endif ()

if (BUILD_DEVEL_PACKAGE)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES boost-devel>=1.44.0 Mesa-devel freetype2-devel)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES gigi-devel=${GIGI_VERSION})
endif ()

if (BUILD_DEVEL_PACKAGE AND BUILD_SDL_DRIVER)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES SDL-devel>=1.2)
endif ()

if (BUILD_DEVEL_PACKAGE AND BUILD_OGRE_OIS_PLUGIN)
    list(APPEND CPACK_RPM_PACKAGE_REQUIRES ogre-devel>=1.6 libois-devel>=1.2)
endif ()

# Deb-specific settings
set(CPACK_DEBIAN_PACKAGE_SECTION libs)

set(CPACK_DEBIAN_PACKAGE_DEPENDS "libgl1-mesa-glx | libgl1, libglu1-mesa | libglu, libfreetype6")
set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, gigi (= ${GIGI_VERSION})")

if (BUILD_SDL_DRIVER)
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, libsdl1.2debian (>= 1.2)")
endif ()

if (BUILD_OGRE_OIS_PLUGIN)
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS},  libogremain-1.4.9 (>= 1.4.9), libois1")
endif ()

if (BUILD_DEVEL_PACKAGE)
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "boost-devel (>= 1.44.0), libgl1-mesa-dev | libgl-dev, libglu1-mesa-dev | libglu-dev, libfreetype6-dev")
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, gigi-dev (= ${GIGI_VERSION})")
endif ()

if (BUILD_DEVEL_PACKAGE AND BUILD_SDL_DRIVER)
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, libsdl1.2-dev (>= 1.2)")
endif ()
if (BUILD_DEVEL_PACKAGE AND BUILD_OGRE_OIS_PLUGIN)
    set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS},  libogre-dev (>= 1.4.9), libois-dev")
endif ()

if (UNIX)
    set(CPACK_GENERATOR "TGZ;TBZ2")
    find_program(RPMBUILD rpmbuild)
    if (RPMBUILD)
        list(APPEND CPACK_GENERATOR RPM)
    endif ()
    set(RPMBUILD ${RPMBUILD} CACHE INTERNAL "")
    find_program(DPKG dpkg)
    if (DPKG)
        list(APPEND CPACK_GENERATOR DEB)
    endif ()
    set(DPKG ${DPKG} CACHE INTERNAL "")
    set(CPACK_SOURCE_GENERATOR "TGZ;TBZ2")
elseif (WIN32)
    set(CPACK_GENERATOR "NSIS")
    set(CPACK_SOURCE_GENERATOR "ZIP")
endif ()

include(CPack)

cpack_add_component(
    COMPONENT_GIGI
    DISPLAY_NAME GiGi
    DESCRIPTION "The core GG library, including the GUI state machine and all the controls.  Not usable without an input driver."
    REQUIRED
    GROUP COMPONENT_GROUP_RUNTIME
)

cpack_add_component(
    COMPONENT_GIGISDL
    DISPLAY_NAME GiGiSDL
    DESCRIPTION "An SDL input driver (http://www.libsdl.org)."
    GROUP COMPONENT_GROUP_RUNTIME
    DEPENDS COMPONENT_GIGI
)

cpack_add_component(
    COMPONENT_GIGIOGRE
    DISPLAY_NAME GiGiOgre
    DESCRIPTION "An Ogre input driver (http://www.ogre3d.org).  Note that Ogre itself does not include proper input support.  The OIS input plugin is recommended."
    GROUP COMPONENT_GROUP_RUNTIME
    DEPENDS COMPONENT_GIGI
)

cpack_add_component(
    COMPONENT_GIGIOGREPLUGIN_OIS
    DISPLAY_NAME "GiGiOgre OIS Plugin"
    DESCRIPTION "An Ogre plugin using OIS (http://sourceforge.net/projects/wgois)."
    GROUP COMPONENT_GROUP_RUNTIME
    DEPENDS COMPONENT_GIGIOGRE
)

cpack_add_component(
    COMPONENT_GIGI_DEVEL
    DISPLAY_NAME "GiGi"
    DESCRIPTION "The files necessary to do development with GiGi."
    GROUP COMPONENT_GROUP_DEVEL
    DEPENDS COMPONENT_GIGI
)

cpack_add_component(
    COMPONENT_GIGISDL_DEVEL
    DISPLAY_NAME "GiGiSDL"
    DESCRIPTION "The files necessary to do development with GiGiSDL."
    GROUP COMPONENT_GROUP_DEVEL
    DEPENDS COMPONENT_GIGI_DEVEL COMPONENT_GIGISDL
)

cpack_add_component(
    COMPONENT_GIGIOGRE_DEVEL
    DISPLAY_NAME "GiGiOgre"
    DESCRIPTION "The files necessary to do development with GiGiOgre."
    GROUP COMPONENT_GROUP_DEVEL
    DEPENDS COMPONENT_GIGI_DEVEL COMPONENT_GIGIOGRE
)

cpack_add_component(
    COMPONENT_GIGIOGREPLUGIN_OIS_DEVEL
    DISPLAY_NAME "GiGiOgre OIS Plugin"
    DESCRIPTION "The files necessary to do development with GiGiOgre's OIS Plugin.  Only required for users who are statically linking against Ogre, and want to link to the OIS plugin at link-time."
    GROUP COMPONENT_GROUP_DEVEL
    DEPENDS COMPONENT_GIGIOGRE_DEVEL COMPONENT_GIGIOGREPLUGIN_OIS
)

cpack_add_component_group(
    COMPONENT_GROUP_RUNTIME
    DISPLAY_NAME "Runtime"
    DESCRIPTION "The runtime libs needed to run an application that uses GG."
    EXPANDED
)

cpack_add_component_group(
    COMPONENT_GROUP_DEVEL
    DISPLAY_NAME "Development"
    DESCRIPTION "The development libs and headers needed to build an application that uses GG."
    EXPANDED
)