# TODO: find out which version is actually required

cmake_minimum_required(VERSION 3.1)

##

## Find packages

##

# TODO: check if we really need all of them

find_package(Boost REQUIRED system)

find_package(ZLIB REQUIRED)

## ETL doesn't install a package configuration so find package will fail

# find_package(ETL REQUIRED)

## TODO: investigate these more closely

set(CMAKE_THREAD_PREFER_PTHREAD ON)

set(THREADS_PREFER_PTHREAD_FLAG ON)

find_package(Threads REQUIRED)

if (CMAKE_USE_PTHREADS_INIT)

    set(HAVE_LIBPTHREAD ON)

endif()

include(FindPkgConfig)

pkg_check_modules(SIGCPP REQUIRED sigc++-2.0)

pkg_check_modules(GLIBMM REQUIRED glibmm-2.4)

pkg_check_modules(GIOMM REQUIRED giomm-2.4)

pkg_check_modules(CAIRO REQUIRED cairo)

pkg_check_modules(PANGOCAIRO REQUIRED pangocairo) # lyr_freetype

pkg_check_modules(LIBXML REQUIRED libxml++-2.6)

pkg_check_modules(MLT REQUIRED mlt++)

pkg_check_modules(FFTW REQUIRED fftw3)

pkg_check_modules(FT REQUIRED freetype2) # for lyr_freetype

pkg_check_modules(LIBPNG REQUIRED libpng) # for mod_png

#TODO(ice0): find solution for libmng

pkg_check_modules(LIBMNG libmng) # for mod_mng (set as optional as it is not correctly installed in Debian)

pkg_check_modules(LIBJPEG REQUIRED libjpeg) # for mod_mng

pkg_check_modules(OPENEXR REQUIRED OpenEXR) # for mod_openexr

pkg_check_modules(MAGICKCORE REQUIRED MagickCore) # for Magick++

## TODO: move to module where it is actually required

pkg_check_modules(PANGO REQUIRED pango)

## TODO: should we keep it here?

find_package(ImageMagick COMPONENTS Magick++)

##

## Configure

##

## set git version

## TODO: put into separate file

find_package(Git)

if (GIT_FOUND)

    execute_process(

        COMMAND ${GIT_EXECUTABLE} show -s --format=%ad --date=format:%Y%m%d HEAD

        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}

        OUTPUT_VARIABLE GIT_DATE

        OUTPUT_STRIP_TRAILING_WHITESPACE

    )

    execute_process(

        COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD

        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}

        OUTPUT_VARIABLE GIT_BRANCH

        OUTPUT_STRIP_TRAILING_WHITESPACE

    )

    execute_process(

        COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD

        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}

        OUTPUT_VARIABLE GIT_HASH

        OUTPUT_STRIP_TRAILING_WHITESPACE

    )

else()

    set(GIT_DATE    "unknown")

    set(GIT_BRANCH  "unknown")

    set(GIT_HASH    "unknown")

endif()

# Check headers

include(CheckIncludeFile)

CHECK_INCLUDE_FILE(sys/wait.h  HAVE_SYS_WAIT_H)

CHECK_INCLUDE_FILE(signal.h    HAVE_SIGNAL_H)

CHECK_INCLUDE_FILE(termios.h   HAVE_TERMIOS_H)

CHECK_INCLUDE_FILE(process.h   HAVE_PROCESS_H)

CHECK_INCLUDE_FILE(io.h        HAVE_IO_H)

CHECK_INCLUDE_FILE(sys/fcntl.h HAVE_FCNTL_H)

# Check functions

include (CheckFunctionExists)

CHECK_FUNCTION_EXISTS(fork HAVE_FORK)

CHECK_FUNCTION_EXISTS(pipe HAVE_PIPE)

CHECK_FUNCTION_EXISTS(waitpid HAVE_WAITPID)

add_definitions(-DHAVE_CONFIG_H)

configure_file(config.h.cmake.in config.h)

configure_file(autorevision.h.cmake.in autorevision.h)

##

## Include

##

## for config

include_directories(${CMAKE_CURRENT_BINARY_DIR})

include_directories(${CMAKE_CURRENT_SOURCE_DIR})

##

## CMake helpers

##

include(cmake/install_header.cmake)

##

## Sub-dirs

##

add_subdirectory(synfig)

add_subdirectory(tool)

add_subdirectory(modules)

##

## Build targets

##