CMakeLists.txt

# CMake project definition file.
project(libgme)

include (CheckCXXCompilerFlag)
# SET ( CMAKE_CXX_FLAGS "-Wl,-z,defs" CACHE STRING "compile flags" FORCE)
SET ( CMAKE_CXX_FLAGS "" CACHE STRING "compile flags" FORCE)


# When version is changed, also change the one in gme/gme.h to match
set(GME_VERSION 0.6.2 CACHE INTERNAL "libgme Version")

# 2.6+ always assumes FATAL_ERROR, but 2.4 and below don't.
# Of course, 2.4 might work, in which case you're welcome to drop
# down the requirement, but I can't test that.
cmake_minimum_required(VERSION 2.6 FATAL_ERROR)

# Default emulators to build (all of them! ;)
if (NOT DEFINED USE_GME_AY)
    SET(USE_GME_AY 1 CACHE BOOL "Enable support for Spectrum ZX music emulation")
endif()

if (NOT DEFINED USE_GME_GBS)
    SET(USE_GME_GBS 1 CACHE BOOL "Enable support for Game Boy music emulation")
endif()

if (NOT DEFINED USE_GME_GYM)
    SET(USE_GME_GYM 1 CACHE BOOL "Enable Sega MegaDrive/Genesis music emulation")
endif()

if (NOT DEFINED USE_GME_HES)
    SET(USE_GME_HES 1 CACHE BOOL "Enable PC Engine/TurboGrafx-16 music emulation")
endif()

if (NOT DEFINED USE_GME_KSS)
    SET(USE_GME_KSS 1 CACHE BOOL "Enable MSX or other Z80 systems music emulation")
endif()

if (NOT DEFINED USE_GME_NSF)
    SET(USE_GME_NSF 1 CACHE BOOL "Enable NES NSF music emulation")
endif()

if (NOT DEFINED USE_GME_NSFE)
    SET(USE_GME_NSFE 1 CACHE BOOL "Enable NES NSFE and NSF music emulation")
endif()

if (NOT DEFINED USE_GME_SAP)
    SET(USE_GME_SAP 1 CACHE BOOL "Enable Atari SAP music emulation")
endif()

if (NOT DEFINED USE_GME_SPC)
    SET(USE_GME_SPC 1 CACHE BOOL "Enable SNES SPC music emulation")
endif()

if (NOT DEFINED USE_GME_VGM)
    SET(USE_GME_VGM 1 CACHE BOOL "Enable Sega VGM/VGZ music emulation")
endif()

if (NOT DEFINED USE_GENS)
  SET(USE_GENS 0 CACHE BOOL "Enable Gens core for VGM emulation (less accurate, faster, disabled by default)")
endif()

if (NOT DEFINED USE_GME_SGC)
    SET(USE_GME_SGC 1 CACHE BOOL "Enable Sega/Game Gear/Coleco music emulation")
endif()

if (USE_GME_NSFE AND NOT USE_GME_NSF)
    MESSAGE(" -- NSFE support requires NSF, enabling NSF support. --")
    SET(USE_GME_NSF 1 CACHE BOOL "Enable NES NSF music emulation" FORCE)
endif()

option(BUILD_SHARED_LIBS "Build shared library (set to OFF for static library)" ON)

if (WIN32)
   option(ENABLE_UBSAN "Enable Undefined Behavior Sanitizer error-checking" OFF)
ELSE()
   option(ENABLE_UBSAN "Enable Undefined Behavior Sanitizer error-checking" ON)
ENDIF()



# Check for GCC/Clang "visibility" support.
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
    OR
    CMAKE_CXX_COMPILER_ID STREQUAL "Clang")

    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -W -Wextra")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

    # Assume we have visibility support on any compiler that supports C++11
    add_definitions (-DLIBGME_VISIBILITY)
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden")

    # Try to protect against undefined behavior from signed integer overflow
    # This has caused miscompilation of code already and there are other
    # potential uses; see https://bitbucket.org/mpyne/game-music-emu/issues/18/
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fwrapv")

    if (NOT DEFINED LIBGME_SWITCH_FALLTHROUGH)
        check_cxx_compiler_flag (-Wimplicit-fallthrough __LIBGME_SWITCH_FALLTHROUGH_WARNINGS)
        set (LIBGME_SWITCH_FALLTHROUGH ${__LIBGME_SWITCH_FALLTHROUGH_WARNINGS}
            CACHE BOOL "Set if the compiler will complain about implicit switch fallthrough"
            )
    endif()

    if (ENABLE_UBSAN)
         set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
    endif()
endif ()

if(LIBGME_SWITCH_FALLTHROUGH)
     # Avoid warning spam about switch fallthroughs, which are numerous in
     # the codebase.
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wimplicit-fallthrough=0")
endif()

#include_directories(fex)


# Shared library defined here
add_subdirectory(gme)