cmake_minimum_required(VERSION 3.0)
cmake_policy(SET CMP0054 NEW)
project(PathShagged)
if(MSVC)
  # Shaddup MSVC
  add_definitions(-DUNICODE=1 -D_UNICODE=1 -D__SSE__=1 -D_CRT_SECURE_NO_WARNINGS=1 -DD_SCL_SECURE_NO_WARNINGS=1 /wd4267 /wd4244 /wd4305 /MP)

  # Link-time Code Generation for Release builds
  set(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /Oy /GL /Gy /MD")
  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
  set(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /Zi /O2 /Oy- /GL /Gy /MD")
  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
  set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
  set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")

else()
  if (CMAKE_COMPILER_IS_GNUCXX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fpermissive")
    message(WARNING "GCC needs -fpermissive for nested type redeclarations; expect lotsa warnings!!")
  endif()
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wno-multichar -fno-exceptions")

  if(APPLE)
    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -flto")
    set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -flto")
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto")
    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -flto")
  endif()

endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
include_directories(/usr/local/include)
endif()

if(("${CMAKE_BUILD_TYPE}" STREQUAL "Release" OR "${CMAKE_BUILD_TYPE}" STREQUAL "RelWithDebInfo")
   AND "${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
  option(USE_LD_GOLD "Link with GNU Gold and enable LTO" ON)
else()
  option(USE_LD_GOLD "Link with GNU Gold and enable LTO" OFF)
endif()
if(USE_LD_GOLD AND ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU"))
    execute_process(COMMAND ${CMAKE_C_COMPILER} -fuse-ld=gold -Wl,--version ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
    if("${LD_VERSION}" MATCHES "GNU gold")
       set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
       set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -flto")
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
       message(STATUS "GNU gold linker enabled.")
    else()
        message(WARNING "GNU gold linker isn't available, using the default system linker.")
        set(USE_LD_GOLD OFF)
    endif()
endif()

set(BOO_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/hecl/extern/libBoo/include)
set(HECL_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/hecl/include
                     ${CMAKE_CURRENT_SOURCE_DIR}/hecl/blender)

set(DATA_SPEC_LIBS
    RetroDataSpec
    DNAMP3
    DNAMP2
    DNAMP1
    DNACommon)
set(HECL_DATASPEC_DECLS
"/* RetroCommon specs */
namespace DataSpec
{
    extern HECL::Database::DataSpecEntry SpecEntMP1;
    extern HECL::Database::DataSpecEntry SpecEntMP2;
    extern HECL::Database::DataSpecEntry SpecEntMP3;
}")
set(HECL_DATASPEC_PUSHES
"    /* RetroCommon */
    HECL::Database::DATA_SPEC_REGISTRY.push_back(&DataSpec::SpecEntMP1);
    HECL::Database::DATA_SPEC_REGISTRY.push_back(&DataSpec::SpecEntMP2);
    HECL::Database::DATA_SPEC_REGISTRY.push_back(&DataSpec::SpecEntMP3);")
add_subdirectory(hecl)
add_definitions(${BOO_SYS_DEFINES})
add_subdirectory(libSpecter)
set(SPECTER_INCLUDE_DIR libSpecter/include libSpecter/freetype2/include)
add_subdirectory(NODLib)
set(NODLIB_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/NODLib/include)
add_definitions(-DZE_ATHENA_TYPES=1)
set(MATHLIB_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/libSpecter/MathLib/include)
include_directories(${ATHENA_INCLUDE_DIR} ${LOG_VISOR_INCLUDE_DIR} ${HECL_INCLUDE_DIR}
                    ${NODLIB_INCLUDE_DIR} ${MATHLIB_INCLUDE_DIR} ${BOO_INCLUDE_DIR}
                    ${SPECTER_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
add_subdirectory(DataSpec)
add_subdirectory(Editor)
add_subdirectory(Runtime)

unset(GIT_EXECUTABLE CACHE)
find_package(Git)
if(GIT_FOUND)
    message(STATUS "Found GIT: ${GIT_EXECUTABLE}")
    # Get the current working branch
    execute_process(COMMAND "${GIT_EXECUTABLE}" 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_EXECUTABLE} log -1 --format=%h WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE GIT_COMMIT_HASH OUTPUT_STRIP_TRAILING_WHITESPACE)
    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE GIT_COMMIT_HASH_FULL OUTPUT_STRIP_TRAILING_WHITESPACE)
    execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --format=%ad WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE GIT_COMMIT_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
    message(STATUS "Unable to find GIT, commit information will not be available")
    set(GIT_BRANCH "")
    set(GIT_COMMIT_HASH "")
    set(GIT_COMMIT_HASH_FULL "")
    set(GIT_COMMIT_DATE "")
endif()

configure_file(${CMAKE_SOURCE_DIR}/version.h.in ${CMAKE_SOURCE_DIR}/version.h)