# cmake configuration

cmake_minimum_required(VERSION 2.8.12)
cmake_policy(VERSION 2.8.12)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
    "${CMAKE_SOURCE_DIR}/cmake/")

include(CheckIncludeFile)

# for /MT on MSVC
set(CMAKE_USER_MAKE_RULES_OVERRIDE
   "${CMAKE_SOURCE_DIR}/cmake/c_flag_overrides.cmake")
set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX
   "${CMAKE_SOURCE_DIR}/cmake/cxx_flag_overrides.cmake")

# project

project(solvespace)
set(solvespace_VERSION_MAJOR 2)
set(solvespace_VERSION_MINOR 1)

if(NOT WIN32)
    set(GUI gtk2 CACHE STRING "GUI toolkit to use (one of: fltk gtk2 gtk3)")
endif()

# compiler

if(WIN32)
    add_definitions(
        -D_CRT_SECURE_NO_DEPRECATE=1
        -D_CRT_SECURE_NO_WARNINGS=1
        -D_WIN32_WINNT=0x500
        -D_WIN32_IE=_WIN32_WINNT
        -DISOLATION_AWARE_ENABLED=1
        -DWIN32=1
        -DWIN32_LEAN_AND_MEAN=1)
endif()

if((CMAKE_CXX_PLATFORM_ID STREQUAL "Linux") AND CMAKE_COMPILER_IS_GNUCC)
    set(CMAKE_EXE_LINKER_FLAGS "-Wl,--as-needed ${CMAKE_EXE_LINKER_FLAGS}")
endif()

# dependencies

CHECK_INCLUDE_FILE("stdint.h" HAVE_STDINT_H)

find_package(OpenGL REQUIRED)

find_package(Perl)
find_package(PerlModules COMPONENTS GD)
if(NOT (PERL_FOUND AND PERLMODULES_FOUND))
    message(STATUS "Perl with GD not found; icons will not be regenerated if modified")
endif()

if(WIN32)
    find_package(PNG)

    if(NOT PNG_FOUND)
        message(STATUS "Using prebuilt libpng")

        set(PNG_FOUND TRUE)
        set(PNG_LIBRARIES
            "${CMAKE_SOURCE_DIR}/extlib/libpng/libpng.lib"
            "${CMAKE_SOURCE_DIR}/extlib/zlib/zlib.lib")
        set(PNG_INCLUDE_DIRS
            "${CMAKE_SOURCE_DIR}/extlib/libpng")
    endif()

    message(STATUS "Using prebuilt SpaceWare")
    set(SPACEWARE_FOUND TRUE)
    set(SPACEWARE_INCLUDE_DIR
        "${CMAKE_SOURCE_DIR}/extlib/si")
    set(SPACEWARE_LIBRARIES
        "${CMAKE_SOURCE_DIR}/extlib/si/siapp.lib")
elseif(APPLE)
    find_package(PNG REQUIRED)
    find_library(APPKIT_LIBRARY AppKit REQUIRED)
else() # Linux and compatible systems
    find_package(PNG REQUIRED)
    find_package(SpaceWare)

    if(GUI STREQUAL "fltk")
        # Find the packages the old-fashioned way. Doesn't require
        # the system to follow freedesktop standards.
        find_package(FLTK REQUIRED)
        CHECK_INCLUDE_FILE("fontconfig/fontconfig.h" HAVE_FONTCONFIG)
    elseif(GUI STREQUAL "gtk3" OR GUI STREQUAL "gtk2")
        # Use freedesktop's pkg-config to locate everything.
        find_package(PkgConfig REQUIRED)
        pkg_check_modules(FONTCONFIG REQUIRED fontconfig)
        pkg_check_modules(JSONC REQUIRED json-c)
        pkg_check_modules(GLEW REQUIRED glew)

        set(HAVE_GTK TRUE)
        if(GUI STREQUAL "gtk3")
            set(HAVE_GTK3 TRUE)
            pkg_check_modules(GTKMM REQUIRED gtkmm-3.0 pangomm-1.4 x11)
        else()
            set(HAVE_GTK2 TRUE)
            pkg_check_modules(GTKMM REQUIRED gtkmm-2.4 pangomm-1.4 x11)
        endif()
    else()
        message(FATAL_ERROR "GUI unrecognized: ${GUI}")
    endif()
endif()

# components

if(WIN32)
    add_subdirectory(tools)
endif()

add_subdirectory(src)
add_subdirectory(exposed)