file(GLOB LUA_SOURCES CONFIGURE_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/lua/*.c)
list(FILTER LUA_SOURCES EXCLUDE REGEX "/(lua|luac)\\.c$")

add_library(lua STATIC ${LUA_SOURCES})
target_include_directories(lua SYSTEM PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/lua)
set_target_properties(lua PROPERTIES C_STANDARD 99 C_EXTENSIONS ON)
if(UNIX)
  target_compile_definitions(lua PRIVATE LUA_USE_POSIX)
  target_link_libraries(lua PUBLIC m)
endif()

add_library(clay INTERFACE)
target_include_directories(clay SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/clay)

add_library(stb INTERFACE)
target_include_directories(stb SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/stb)