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set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
project(floormat)

set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_DEFAULT 23)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS FALSE)

set(CMAKE_C_STANDARD 17)
set(CMAKE_C_STANDARD_DEFAULT 11)
set(CMAKE_C_STANDARD_REQUIRED TRUE)
set(CMAKE_C_EXTENSIONS FALSE)

set(CMAKE_C_VISIBILITY_PRESET hidden)
set(CMAKE_CXX_VISIBILITY_PRESET hidden)
set(CMAKE_C_LINKER_PREFERENCE_PROPAGATES OFF)
set(CMAKE_CXX_LINKER_PREFERENCE_PROPAGATES ON)
set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)

set(CMAKE_INSTALL_MESSAGE LAZY)

if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT OR CMAKE_INSTALL_PREFIX STREQUAL "")
    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "" FORCE)
endif()

if(CMAKE_BUILD_TYPE STREQUAL "")
    set(CMAKE_BUILD_TYPE "RELEASE" CACHE STRING "" FORCE)
endif()
string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE)

set(FLOORMAT_PRECOMPILED-HEADERS ON CACHE BOOL
    "Use precompiled headers while building the floormat.")

function(sets type)
    set(i 0)
    list(LENGTH ARGN max)
    math(EXPR foo "${max} % 2")
    if(NOT foo EQUAL 0)
        message(FATAL_ERROR "argument count not even")
    endif()
    while(i LESS max)
        list(GET ARGN "${i}" name)
        math(EXPR i "${i} + 1")
        list(GET ARGN "${i}" value)
        math(EXPR i "${i} + 1")
        set(${name} "${value}" CACHE "${type}" "" FORCE)
    endwhile()
endfunction()

function(fm_run_hook str)
    if(COMMAND "${str}")
        cmake_language(CALL "${str}")
    endif()
endfunction()

function(fm_load_userconfig)
    if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
        set(_fm_username "$ENV{USERNAME}")
    else()
        set(_fm_username "$ENV{USER}")
    endif()
    set(_fm_userconfig "userconfig-${_fm_username}@${CMAKE_CXX_COMPILER_ID}.cmake")
    if(EXISTS "${CMAKE_SOURCE_DIR}/${_fm_userconfig}")
        message(STATUS "Loading user config '${_fm_userconfig}'")
        include("${CMAKE_SOURCE_DIR}/${_fm_userconfig}" NO_POLICY_SCOPE)
    else()
        message(STATUS "Can't find user config '${_fm_userconfig}'")
    endif()
endfunction()

if(WIN32)
    add_definitions(-D_CRT_SECURE_NO_WARNINGS -DNOMINMAX -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0)
    if(NOT MSVC)
        add_link_options(-Wl,--nxcompat -Wl,--dynamicbase)
        if(CMAKE_SIZEOF_VOID_P GREATER_EQUAL 8)
            add_link_options(-Wl,--high-entropy-va)
        endif()
    endif()
endif()

if(MSVC)
    add_definitions(-D_USE_MATH_DEFINES=1)
    add_compile_options(-permissive-)
    add_compile_options(-Zc:preprocessor -Zc:inline -Zc:lambda -Zc:throwingNew)
    add_compile_options(-external:W0 -external:anglebrackets)
    add_compile_options(
        #-wd4244 # warning C4244: 'argument': conversion from 'int' to 'float', possible loss of data
        #-wd4251 # warning C4251: 't::f': class 'x' needs to have dll-interface to be used by clients of class 'y'
        -wd4456  # warning C4456: declaration of 'x' hides previous local declaration
        -wd4458  # warning C4458: declaration of 'keys' hides class member
    )
    add_definitions(-utf-8)
    if(CMAKE_SIZEOF_VOID_P GREATER_EQUAL 8)
        add_link_options(-HIGHENTROPYVA)
    endif()
else()
    add_compile_options(-fuse-cxa-atexit)
    add_compile_options(-fno-rtti)
endif()

if(CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
    add_compile_options(-Wno-reserved-macro-identifier)
endif()

cmake_policy(SET CMP0063 NEW)

set_directory_properties(PROPERTIES CORRADE_USE_PEDANTIC_FLAGS OFF)
set_directory_properties(PROPERTIES CORRADE_CXX_STANDARD ${CMAKE_CXX_STANDARD})
set_directory_properties(PROPERTIES INTERFACE_CORRADE_CXX_STANDARD ${CMAKE_CXX_STANDARD})

if(NOT "$ENV{FLOORMAT_NO_USERCONFIG}" AND NOT FLOORMAT_NO_USERCONFIG)
    fm_load_userconfig()
    string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE)
endif()

add_subdirectory(external)

if(MSVC)
    add_definitions(/FI"compat/prelude.hpp")
else()
    add_definitions(-include compat/prelude.hpp)
    if(CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
        add_compile_options(-Wimplicit-fallthrough -Werror=implicit-fallthrough)
    endif()
    if(NOT APPLE AND NOT WIN32)
        add_compile_options(-fno-plt)
    endif()
endif()

add_definitions(
    -DIMGUI_DISABLE_OBSOLETE_FUNCTIONS
    -DIMGUI_DISABLE_OBSOLETE_KEYIO
)

fm_run_hook(fm-userconfig-src)

include_directories(.)
include_directories(src)

get_property(_fm-sdl2-include-dirs TARGET SDL2::SDL2 PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
include_directories(SYSTEM
    "${CORRADE_INCLUDE_DIR}"
    "${MAGNUM_INCLUDE_DIR}"
    "${MAGNUMPLUGINS_INCLUDE_DIR}"
    "${MAGNUMINTEGRATION_INCLUDE_DIR}"
    "${_fm-sdl2-include-dirs}"
)

add_subdirectory(src)
add_subdirectory(main)
add_subdirectory(editor)
add_subdirectory(anim-crop-tool)
add_subdirectory(test)

install(DIRECTORY images DESTINATION "share/${PROJECT_NAME}")

fm_run_hook(fm-userconfig-post)
get_cmake_property(_variableNames VARIABLES)