cmake_minimum_required( VERSION 2.8 )
PROJECT( Assimp )

# Define here the needed parameters
set (ASSIMP_VERSION_MAJOR 3)
set (ASSIMP_VERSION_MINOR 1)
set (ASSIMP_VERSION_PATCH 1) # subversion revision?
set (ASSIMP_VERSION ${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}.${ASSIMP_VERSION_PATCH})
set (ASSIMP_SOVERSION 3)
set (PROJECT_VERSION "${ASSIMP_VERSION}")

set(ASSIMP_PACKAGE_VERSION "0" CACHE STRING "the package-specific version used for uploading the sources")

# Get the current working branch
execute_process(
    COMMAND git rev-parse --abbrev-ref HEAD
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_BRANCH
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

# Get the latest abbreviated commit hash of the working branch
execute_process(
    COMMAND git log -1 --format=%h
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_COMMIT_HASH
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

if(NOT GIT_COMMIT_HASH)
    set(GIT_COMMIT_HASH 0)
endif(NOT GIT_COMMIT_HASH)

configure_file(
    ${CMAKE_CURRENT_SOURCE_DIR}/revision.h.in
    ${CMAKE_CURRENT_BINARY_DIR}/revision.h
)

include_directories(${CMAKE_CURRENT_BINARY_DIR})

option(ASSIMP_OPT_BUILD_PACKAGES "Set to ON to generate CPack configuration files and packaging targets" OFF)
set(CMAKE_MODULE_PATH       "${CMAKE_CURRENT_SOURCE_DIR}/cmake-modules" )
set(LIBASSIMP_COMPONENT     "libassimp${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}.${ASSIMP_VERSION_PATCH}" )
set(LIBASSIMP-DEV_COMPONENT "libassimp${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}.${ASSIMP_VERSION_PATCH}-dev" )
set(CPACK_COMPONENTS_ALL assimp-bin ${LIBASSIMP_COMPONENT} ${LIBASSIMP-DEV_COMPONENT} assimp-dev)
set(ASSIMP_LIBRARY_SUFFIX "" CACHE STRING "Suffix to append to library names")

option(ASSIMP_ANDROID_JNIIOSYSTEM "Android JNI IOSystem support is active" OFF)

# Workaround to be able to deal with compiler bug "Too many sections" with mingw.
if( CMAKE_COMPILER_IS_MINGW )
    ADD_DEFINITIONS(-DASSIMP_BUILD_NO_IFC_IMPORTER )
endif()

if((CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX) AND NOT CMAKE_COMPILER_IS_MINGW)
    add_definitions(-fPIC) # this is a very important switch and some libraries seem now to have it....
    # hide all not-exported symbols
    add_definitions( -fvisibility=hidden -Wall )
elseif(MSVC)
    # enable multi-core compilation with MSVC
    add_definitions(/MP)
endif()

INCLUDE (FindPkgConfig)
INCLUDE_DIRECTORIES( include )

INCLUDE (PrecompiledHeader)

# If this is an in-source build (CMAKE_SOURCE_DIR == CMAKE_BINARY_DIR),
# write the library/executable files to the respective directories in the
# source tree. During an out-of-source build, however, do not litter this
# directory, since that is probably what the user wanted to avoid.
IF ( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
    SET( CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_HOME_DIRECTORY}/lib" )
    SET( CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_HOME_DIRECTORY}/lib" )
    SET( CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_HOME_DIRECTORY}/bin" )
ENDIF ( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )

# Cache these to allow the user to override them manually.
SET( ASSIMP_LIB_INSTALL_DIR "lib" CACHE PATH
    "Path the built library files are installed to." )
SET( ASSIMP_INCLUDE_INSTALL_DIR "include" CACHE PATH
    "Path the header files are installed to." )
SET( ASSIMP_BIN_INSTALL_DIR "bin" CACHE PATH
    "Path the tool executables are installed to." )

SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "Debug Postfitx for lib, samples and tools")

# Allow the user to build a shared or static library
option ( BUILD_SHARED_LIBS "Build a shared version of the library" ON )

# Only generate this target if no higher-level project already has
IF (NOT TARGET uninstall)
    # add make uninstall capability
    configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake-modules/cmake_uninstall.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake" IMMEDIATE @ONLY)
    add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
ENDIF()

# Globally enable Boost resp. the Boost workaround – it is also needed by the
# tools which include the Assimp headers.
option ( ASSIMP_ENABLE_BOOST_WORKAROUND
    "If a simple implementation of the used Boost functions is used. Slightly reduces functionality, but enables builds without Boost available."
    ON
)
IF ( ASSIMP_ENABLE_BOOST_WORKAROUND )
    INCLUDE_DIRECTORIES( code/BoostWorkaround )
    ADD_DEFINITIONS( -DASSIMP_BUILD_BOOST_WORKAROUND )
    MESSAGE( STATUS "Building a non-boost version of Assimp." )
ELSE ( ASSIMP_ENABLE_BOOST_WORKAROUND )
    SET( Boost_DETAILED_FAILURE_MSG ON )
    SET( Boost_ADDITIONAL_VERSIONS "1.47" "1.47.0" "1.48.0" "1.48" "1.49" "1.49.0" "1.50" "1.50.0" "1.51" "1.51.0" "1.52.0" "1.53.0" "1.54.0" "1.55" "1.55.0" "1.56" "1.56.0" "1.57" "1.57.0" )
    FIND_PACKAGE( Boost )
    IF ( NOT Boost_FOUND )
        MESSAGE( FATAL_ERROR
            "Boost libraries (http://www.boost.org/) not found. "
            "You can build a non-boost version of Assimp with slightly reduced "
      "functionality by specifying -DASSIMP_ENABLE_BOOST_WORKAROUND=ON."
        )
    ENDIF ( NOT Boost_FOUND )

    INCLUDE_DIRECTORIES( ${Boost_INCLUDE_DIRS} )
ENDIF ( ASSIMP_ENABLE_BOOST_WORKAROUND )

# cmake configuration files
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/assimp-config.cmake.in"         "${CMAKE_CURRENT_BINARY_DIR}/assimp-config.cmake" @ONLY IMMEDIATE)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/assimp-config-version.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/assimp-config-version.cmake" @ONLY IMMEDIATE)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/assimp-config.cmake"             "${CMAKE_CURRENT_BINARY_DIR}/assimp-config-version.cmake" DESTINATION "${ASSIMP_LIB_INSTALL_DIR}/cmake/assimp-${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}" COMPONENT ${LIBASSIMP-DEV_COMPONENT})

option ( ASSIMP_NO_EXPORT
    "Disable Assimp's export functionality."
    OFF
)

if( CMAKE_COMPILER_IS_GNUCXX )
  set(LIBSTDC++_LIBRARIES -lstdc++)
endif( CMAKE_COMPILER_IS_GNUCXX )

# Search for external dependencies, and build them from source if not found
# Search for zlib
find_package(ZLIB)
if( NOT ZLIB_FOUND )
    message(STATUS "compiling zlib from souces")
    include(CheckIncludeFile)
    include(CheckTypeSize)
    include(CheckFunctionExists)
    # compile from sources
    add_subdirectory(contrib/zlib)
    set(ZLIB_FOUND 1)
    set(ZLIB_LIBRARIES zlibstatic)
    set(ZLIB_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/contrib/zlib ${CMAKE_CURRENT_BINARY_DIR}/contrib/zlib)
else(NOT ZLIB_FOUND)
    ADD_DEFINITIONS(-DASSIMP_BUILD_NO_OWN_ZLIB)
    set(ZLIB_LIBRARIES_LINKED -lz)
endif(NOT ZLIB_FOUND)
INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})

# Search for unzip
if (PKG_CONFIG_FOUND)
    PKG_CHECK_MODULES(UNZIP minizip)
endif (PKG_CONFIG_FOUND)

IF ( ASSIMP_NO_EXPORT )
    ADD_DEFINITIONS( -DASSIMP_BUILD_NO_EXPORT)
    MESSAGE( STATUS "Build an import-only version of Assimp." )
ENDIF( ASSIMP_NO_EXPORT )

SET ( ASSIMP_BUILD_ARCHITECTURE "" CACHE STRING
    "describe the current architecture."
)
IF    ( ASSIMP_BUILD_ARCHITECTURE STREQUAL "")
ELSE  ( ASSIMP_BUILD_ARCHITECTURE STREQUAL "")
    ADD_DEFINITIONS ( -D'ASSIMP_BUILD_ARCHITECTURE="${ASSIMP_BUILD_ARCHITECTURE}"' )
ENDIF ( ASSIMP_BUILD_ARCHITECTURE STREQUAL "")

# ${CMAKE_GENERATOR}
SET ( ASSIMP_BUILD_COMPILER "" CACHE STRING
    "describe the current compiler."
)
IF    ( ASSIMP_BUILD_COMPILER STREQUAL "")
ELSE  ( ASSIMP_BUILD_COMPILER STREQUAL "")
    ADD_DEFINITIONS ( -D'ASSIMP_BUILD_COMPILER="${ASSIMP_BUILD_COMPILER}"' )
ENDIF ( ASSIMP_BUILD_COMPILER STREQUAL "")

MARK_AS_ADVANCED ( ASSIMP_BUILD_ARCHITECTURE ASSIMP_BUILD_COMPILER )

ADD_SUBDIRECTORY( code/ )
option ( ASSIMP_BUILD_ASSIMP_TOOLS
    "If the supplementary tools for Assimp are built in addition to the library."
    ON
)
IF ( ASSIMP_BUILD_ASSIMP_TOOLS )
    IF ( WIN32 )
        ADD_SUBDIRECTORY( tools/assimp_view/ )
    ENDIF ( WIN32 )
    ADD_SUBDIRECTORY( tools/assimp_cmd/ )
ENDIF ( ASSIMP_BUILD_ASSIMP_TOOLS )

option ( ASSIMP_BUILD_SAMPLES
    "If the official samples are built as well (needs Glut)."
    OFF
)

IF ( ASSIMP_BUILD_SAMPLES)
    IF ( WIN32 )
        ADD_SUBDIRECTORY( samples/SimpleTexturedOpenGL/ )
    ENDIF ( WIN32 )
    ADD_SUBDIRECTORY( samples/SimpleOpenGL/ )
ENDIF ( ASSIMP_BUILD_SAMPLES )

option ( ASSIMP_BUILD_TESTS
    "If the test suite for Assimp is built in addition to the library."
    ON
)

IF ( ASSIMP_BUILD_TESTS )
    ADD_SUBDIRECTORY( test/ )
ENDIF ( ASSIMP_BUILD_TESTS )

IF(MSVC)
    option ( ASSIMP_INSTALL_PDB
        "Install MSVC debug files."
        ON
    )
ENDIF(MSVC)

# Generate a pkg-config .pc for the Assimp library.
CONFIGURE_FILE( "${PROJECT_SOURCE_DIR}/assimp.pc.in" "${PROJECT_BINARY_DIR}/assimp.pc" @ONLY )
INSTALL( FILES "${PROJECT_BINARY_DIR}/assimp.pc" DESTINATION ${ASSIMP_LIB_INSTALL_DIR}/pkgconfig/ COMPONENT ${LIBASSIMP-DEV_COMPONENT})

if(CMAKE_CPACK_COMMAND AND UNIX AND ASSIMP_OPT_BUILD_PACKAGES)
    # Packing information
    set(CPACK_PACKAGE_NAME                    "assimp{ASSIMP_VERSION_MAJOR}")
    set(CPACK_PACKAGE_CONTACT "" CACHE STRING "Package maintainer and PGP signer.")
    set(CPACK_PACKAGE_VENDOR                  "http://assimp.sourceforge.net/")
    set(CPACK_PACKAGE_DISPLAY_NAME            "Assimp ${ASSIMP_VERSION}")
    set(CPACK_PACKAGE_DESCRIPTION_SUMMARY     " - Open Asset Import Library ${ASSIMP_VERSION}")
    set(CPACK_PACKAGE_VERSION                 "${ASSIMP_VERSION}.${ASSIMP_PACKAGE_VERSION}" )
    set(CPACK_PACKAGE_VERSION_MAJOR           "${ASSIMP_VERSION_MAJOR}")
    set(CPACK_PACKAGE_VERSION_MINOR           "${ASSIMP_VERSION_MINOR}")
    set(CPACK_PACKAGE_VERSION_PATCH           "${ASSIMP_VERSION_PATCH}")
    set(CPACK_PACKAGE_INSTALL_DIRECTORY       "assimp${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}")
    set(CPACK_RESOURCE_FILE_LICENSE           "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")

    string(TOUPPER ${LIBASSIMP_COMPONENT}     "LIBASSIMP_COMPONENT_UPPER")
    string(TOUPPER ${LIBASSIMP-DEV_COMPONENT} "LIBASSIMP-DEV_COMPONENT_UPPER")

    set(CPACK_COMPONENT_ASSIMP-BIN_DISPLAY_NAME                       "tools")
    set(CPACK_COMPONENT_ASSIMP-BIN_DEPENDS                            "${LIBASSIMP_COMPONENT}" )
    set(CPACK_COMPONENT_${LIBASSIMP_COMPONENT_UPPER}_DISPLAY_NAME     "libraries")
    set(CPACK_COMPONENT_${LIBASSIMP-DEV_COMPONENT_UPPER}_DISPLAY_NAME "common headers and installs")
    set(CPACK_COMPONENT_${LIBASSIMP-DEV_COMPONENT_UPPER}_DEPENDS $    "{LIBASSIMP_COMPONENT}" )
    set(CPACK_COMPONENT_ASSIMP-DEV_DISPLAY_NAME                       "${CPACK_COMPONENT_${LIBASSIMP-DEV_COMPONENT}_DISPLAY_NAME}" )
    set(CPACK_COMPONENT_ASSIMP-DEV_DEPENDS                            "${LIBASSIMP-DEV_COMPONENT}" )
    set(CPACK_DEBIAN_BUILD_DEPENDS debhelper cmake libboost-dev libboost-thread-dev libboost-math-dev zlib1g-dev pkg-config)

    # debian
    set(CPACK_DEBIAN_PACKAGE_PRIORITY "optional")
    set(CPACK_DEBIAN_CMAKE_OPTIONS    "-DBUILD_ASSIMP_SAMPLES:BOOL=${ASSIMP_BUILD_SAMPLES}")
    set(CPACK_DEBIAN_PACKAGE_SECTION  "libs" )
    set(CPACK_DEBIAN_PACKAGE_DEPENDS  "${CPACK_COMPONENTS_ALL}")
    set(CPACK_DEBIAN_PACKAGE_SUGGESTS)
    set(CPACK_DEBIAN_PACKAGE_NAME     "assimp")
    set(CPACK_DEBIAN_PACKAGE_REMOVE_SOURCE_FILES contrib/cppunit-1.12.1 contrib/cppunit_note.txt contrib/zlib workspaces test doc obj samples packaging)
    set(CPACK_DEBIAN_PACKAGE_SOURCE_COPY svn export --force)
    set(CPACK_DEBIAN_CHANGELOG)
    execute_process(COMMAND lsb_release -is
        OUTPUT_VARIABLE _lsb_distribution OUTPUT_STRIP_TRAILING_WHITESPACE
        RESULT_VARIABLE _lsb_release_failed)
    set(CPACK_DEBIAN_DISTRIBUTION_NAME ${_lsb_distribution} CACHE STRING "Name of the distrubiton")
    string(TOLOWER ${CPACK_DEBIAN_DISTRIBUTION_NAME} CPACK_DEBIAN_DISTRIBUTION_NAME)
    if( ${CPACK_DEBIAN_DISTRIBUTION_NAME} STREQUAL "ubuntu" )
        set(CPACK_DEBIAN_DISTRIBUTION_RELEASES lucid maverick natty oneiric precise CACHE STRING "Release code-names of the distrubiton release")
    endif()
    set(DPUT_HOST "" CACHE STRING "PPA repository to upload the debian sources")
    include(CPack)
    include(DebSourcePPA)
endif()