cmake_minimum_required(VERSION 3.10)  
project(smbuslua)  
  
# 设置默认变量值  
set(CMAKE_CXX_STANDARD 11)  
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_COMPILER "g++" CACHE STRING "C++ Compiler")  
set(CFLAGS "-fPIC -li2c" CACHE STRING "C++ Compiler Flags")  
set(LUA_INCDIR "/usr/include/lua5.1" CACHE PATH "Path to Lua include directory")  
set(PREFIX "/usr/local" CACHE PATH "Base installation prefix")  
set(LUADIR "${PREFIX}/share/lua/5.1" CACHE PATH "Directory to put lua files")
set(LIBDIR "${PREFIX}/lib/lua/5.1" CACHE PATH "Directory for libraries")

# 包含目录  
include_directories(${LUA_INCDIR})

# 编译smbuslua.cpp  
include_directories(${CMAKE_SOURCE_DIR}/smbus-cpp) # 包含smbus-cpp的头文件  
add_library(smbuslua SHARED smbuslua.cpp)          # 编译smbuslua.cpp为共享库  
target_link_libraries(smbuslua smbus-cpp ${CFLAGS})    # 链接smbus-cpp和i2c库  

# 动态链接库安装规则
# ${PREFIX}lib/lua/5.1/
install(TARGETS smbuslua DESTINATION ${LIBDIR})
  
# 假设Lua版本是5.1，并且我们希望将Lua源文件安装到lua/5.1/smbus目录下  
set(LUA_VERSION "5.1")  
set(LUA_INSTALL_DIR ${LUADIR}/smbus)  
  
# 安装Lua源文件  
install(FILES  
    init.lua
    DESTINATION LUA_INSTALL_DIR
)