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使用CMake将Lua嵌入到其他应用中 ​

Lua ​

Repo： https://github.com/lua/lua

官网：https://www.lua.org/lua-l.html

版本： v5.4.4

使用CMake嵌入Lua ​

  • lua.cmake
    cmake
    set(LUA_LIB_SRCS 
	"${LuaDir}/lapi.c"
	"${LuaDir}/lcode.c"
	"${LuaDir}/lctype.c"
	"${LuaDir}/ldebug.c"
	"${LuaDir}/ldo.c"
	"${LuaDir}/ldump.c"
	"${LuaDir}/lfunc.c"
	"${LuaDir}/lgc.c"
	"${LuaDir}/llex.c"
	"${LuaDir}/lmem.c"
	"${LuaDir}/lobject.c"
	"${LuaDir}/lopcodes.c"
	"${LuaDir}/lparser.c"
	"${LuaDir}/lstate.c"
	"${LuaDir}/lstring.c"
	"${LuaDir}/ltable.c"
	"${LuaDir}/ltm.c"
	"${LuaDir}/lundump.c"
	"${LuaDir}/lvm.c"
	"${LuaDir}/lzio.c"
	"${LuaDir}/lauxlib.c"
	"${LuaDir}/lbaselib.c"
	"${LuaDir}/lcorolib.c"
	"${LuaDir}/ldblib.c"
	"${LuaDir}/liolib.c"
	"${LuaDir}/lmathlib.c"
	"${LuaDir}/loadlib.c"
	"${LuaDir}/loslib.c"
	"${LuaDir}/lstrlib.c"
	"${LuaDir}/ltablib.c"
	"${LuaDir}/lutf8lib.c"
	"${LuaDir}/linit.c"
)

set(LUA_LIB_HEADERS 
	"${LuaDir}/lua.h"
	"${LuaDir}/lualib.h"
	"${LuaDir}/luaconf.h"
	"${LuaDir}/lauxlib.h"
)

add_library(lua_static STATIC ${LUA_LIB_SRCS} ${LUA_LIB_HEADERS})
set_target_properties(lua_static PROPERTIES OUTPUT_NAME "lua")
target_include_directories(lua_static PUBLIC ${LUA_LIB_HEADERS})

if(UNIX)
	set(LUA_DEFINITIONS)

	if(NOT EMSCRIPTEN)
		find_library(LIBM m)
		#TODO: Redo this with find_package
		if(NOT LIBM)
			message(FATAL_ERROR "libm not found and is required by lua")
		endif()
		target_link_libraries(lua_static INTERFACE ${LIBM})

		list(APPEND LUA_DEFINITIONS LUA_USE_POSIX)
		if(LUA_SUPPORT_DL)
			target_compile_definitions(lua_static PRIVATE "LUA_USE_DLOPEN")
			target_link_libraries(lua_static INTERFACE dl)
		endif()
	endif()

	target_compile_definitions(lua_static 
		PUBLIC ${LUA_DEFINITIONS}
	)
	target_compile_options(lua_static
		PRIVATE "-Wall" "-Wextra"
	)
endif()

if(LUA_BUILD_BINARY)
	include(CheckIncludeFile)
	CHECK_INCLUDE_FILE("readline/readline.h" HAVE_READLINE_READLINE_H)

	add_executable(lua "${LuaDir}/lua.c")
	target_link_libraries(lua PUBLIC lua_static)
	set_target_properties(lua PROPERTIES 
		RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}
	)
	if (HAVE_READLINE_READLINE_H)
		target_compile_definitions(lua PUBLIC "LUA_USE_READLINE")
		target_link_libraries(lua PUBLIC readline)
	endif()
endif()

if(LUA_BUILD_COMPILER)
	add_executable(luac "${LuaDir}/luac.c")
	target_link_libraries(luac PUBLIC lua_static)
	set_target_properties(luac PROPERTIES 
		RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}
	)
endif()

include_directories(${LuaDir})

测试 ​

  • main.cpp
    cpp
    sol::state lua;
int x = 0;
lua.set_function("beep", [&x]{ ++x; printf("Welcome to use lua.\n\n\n"); });
lua.script("beep()");
assert(x == 1);