SET(CMAKE_SYSTEM_NAME Windows)

SET(COMPILER_PREFIX i686-w64-mingw32)
SET(CMAKE_C_COMPILER ${COMPILER_PREFIX}-gcc)
SET(CMAKE_CXX_COMPILER ${COMPILER_PREFIX}-c++)
SET(CMAKE_RC_COMPILER ${COMPILER_PREFIX}-windres)
SET(CMAKE_PKGCONFIG_EXECUTABLE ${COMPILER_PREFIX}-pkg-config)
SET(PKG_CONFIG_EXECUTABLE ${COMPILER_PREFIX}-pkg-config)

# potential flags to make code more similar to MSVC:
#   -fshort-wchar -fshort-enums -mms-bitfields
#
set(CMAKE_C_FLAGS "-masm=intel -std=gnu99 -fpack-struct=2" CACHE STRING "" FORCE)
set(CMAKE_SHARED_LINKER_FLAGS "-static-libgcc" CACHE STRING "" FORCE)

# find and include SDL2
INCLUDE(FindPkgConfig)
PKG_SEARCH_MODULE(SDL2 REQUIRED sdl2)
INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIRS})

if(APPLE)
    SET(TARGET_ENVIRONMENT /usr/local/mingw-w32-bin_i686-darwin/i686-w64-mingw32)
else()
     SET(TARGET_ENVIRONMENT /usr/i686-w64-mingw32)
endif(APPLE)

# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH ${TARGET_ENVIRONMENT})

# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)