我的第一个Lua程序
辛苦的总算在ubutun中搭建完Lua的开发环境，测试一下Lua的环境
1、测试lua是否安装成功，直接运行lua就能进入编译模式
tao@tao:~/lua-5.2.0$ lua Lua 5.2.0 Copyright (C) 1994-2011 Lua.org, PUC-Rio > print("Hello World!") Hello World! > 按ctrl+D退出
2、编译lua文件
tao@tao:~/lua-5.2.0$ vi test.lua在test.lua中输入以下代码后保存
print("-----------------------------"); print("Hello world"); print("-----------------------------"); 在命令行模式下输入以下命令
tao@tao:~/lua-5.2.0$ lua test.lua ----------------------------- Hello world -----------------------------3、在C文件中嵌入lua代码
tao@tao:~/lua-5.2.0$ vi a.c在a.c文件中输入以下代码：
#include <stdio.h> #include <lua.h> #include <lauxlib.h> #include <lualib.h> int main(int argc, char *argv[]) { char line[BUFSIZ]; lua_State *L = luaL_newstate(); luaL_openlibs(L); //while (fgets(line, sizeof(line), stdin) != 0) printf("%s\n",line); luaL_dofile(L, "test.lua"); lua_close(L); return 0; }在命令行模式下输入以下命令：
tao@tao:~/lua-5.2.0$ gcc -o a a.c -I/usr/local/include/ -L/usr/local/lib/ -llua -lm -ldl tao@tao:~/lua-5.2.0$ ./a ----------------------------- Hello world -----------------------------编译C文件时要说明的两个问题
1、因为我安装的lua版本是lua-5.2，因为lua-5.2不认识lua_open函数，所以lua_open函数应该由luaL_newstate函数来代替
2、编译选项这里我出现了很多的错误，一会说是lua_open函数不认识，以一会又说pow函数不认识，我在网上找了不少的编译方法，都不见效
（1）方法一，不成功。使用lua_open函数，编译情况如下
tao@tao:~/lua-5.2.0$ gcc -I/usr/local/include/ -L/usr/local/lib/ -llua a.c a.c: 在函数‘main’中: a.c:9:24: 警告： 初始化时将整数赋给指针，未作类型转换 [默认启用] /tmp/cc5nUKNq.o: In function `main': a.c:(.text+0x23): undefined reference to `lua_open' a.c:(.text+0x33): undefined reference to `luaL_openlibs' a.c:(.text+0x6e): undefined reference to `lua_close'（2）方法二，不成功。使用lua_open函数，编译情况如下：
tao@tao:~/lua-5.2.0$ gcc -I/usr/local/include/ -L/usr/local/lib/ a.c /usr/local/lib/liblua.a a.c: 在函数‘main’中: a.c:9:24: 警告： 初始化时将整数赋给指针，未作类型转换 [默认启用] /tmp/ccLLtNhW.o: In function `main': a.c:(.text+0x23): undefined reference to `lua_open' /usr/local/lib/liblua.a(lvm.o): In function `luaV_execute': lvm.c:(.text+0x16d8): undefined reference to `pow' /usr/local/lib/liblua.a(lobject.o): In function `luaO_arith': lobject.c:(.text+0x120): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tan': lmathlib.c:(.text+0x16c): undefined reference to `tan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tanh': lmathlib.c:(.text+0x1ac): undefined reference to `tanh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sqrt': lmathlib.c:(.text+0x20e): undefined reference to `sqrt' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sin': lmathlib.c:(.text+0x23c): undefined reference to `sin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sinh': lmathlib.c:(.text+0x27c): undefined reference to `sinh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_pow': lmathlib.c:(.text+0x5d8): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log': lmathlib.c:(.text+0x6ba): undefined reference to `log' lmathlib.c:(.text+0x6ca): undefined reference to `log' lmathlib.c:(.text+0x6ed): undefined reference to `log10' lmathlib.c:(.text+0x700): undefined reference to `log' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log10': lmathlib.c:(.text+0x72c): undefined reference to `log10' /usr/local/lib/liblua.a(lmathlib.o): In function `math_fmod': lmathlib.c:(.text+0x865): undefined reference to `fmod' /usr/local/lib/liblua.a(lmathlib.o): In function `math_exp': lmathlib.c:(.text+0x88c): undefined reference to `exp' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cos': lmathlib.c:(.text+0x8cc): undefined reference to `cos' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cosh': lmathlib.c:(.text+0x90c): undefined reference to `cosh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan': lmathlib.c:(.text+0x94c): undefined reference to `atan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan2': lmathlib.c:(.text+0x9a8): undefined reference to `atan2' /usr/local/lib/liblua.a(lmathlib.o): In function `math_asin': lmathlib.c:(.text+0x9ec): undefined reference to `asin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_acos': lmathlib.c:(.text+0xa2c): undefined reference to `acos' /usr/local/lib/liblua.a(loadlib.o): In function `ll_loadfunc': loadlib.c:(.text+0x8e9): undefined reference to `dlsym' loadlib.c:(.text+0x950): undefined reference to `dlopen' loadlib.c:(.text+0x981): undefined reference to `dlerror' loadlib.c:(.text+0x9a1): undefined reference to `dlerror' /usr/local/lib/liblua.a(loadlib.o): In function `gctm': loadlib.c:(.text+0xd1c): undefined reference to `dlclose'（3）方法三，不成功。使用lua_open函数，与方法二相比多了-lm，编译情况如下
tao@tao:~/lua-5.2.0$ gcc -I/usr/local/include/ -L/usr/local/lib/ -lm -DLUA_USE_READLINE a.c /usr/local/lib/liblua.a a.c: 在函数‘main’中: a.c:9:24: 警告： 初始化时将整数赋给指针，未作类型转换 [默认启用] /tmp/ccqm5luQ.o: In function `main': a.c:(.text+0x23): undefined reference to `lua_open' /usr/local/lib/liblua.a(lvm.o): In function `luaV_execute': lvm.c:(.text+0x16d8): undefined reference to `pow' /usr/local/lib/liblua.a(lobject.o): In function `luaO_arith': lobject.c:(.text+0x120): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tan': lmathlib.c:(.text+0x16c): undefined reference to `tan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tanh': lmathlib.c:(.text+0x1ac): undefined reference to `tanh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sqrt': lmathlib.c:(.text+0x20e): undefined reference to `sqrt' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sin': lmathlib.c:(.text+0x23c): undefined reference to `sin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sinh': lmathlib.c:(.text+0x27c): undefined reference to `sinh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_pow': lmathlib.c:(.text+0x5d8): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log': lmathlib.c:(.text+0x6ba): undefined reference to `log' lmathlib.c:(.text+0x6ca): undefined reference to `log' lmathlib.c:(.text+0x6ed): undefined reference to `log10' lmathlib.c:(.text+0x700): undefined reference to `log' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log10': lmathlib.c:(.text+0x72c): undefined reference to `log10' /usr/local/lib/liblua.a(lmathlib.o): In function `math_fmod': lmathlib.c:(.text+0x865): undefined reference to `fmod' /usr/local/lib/liblua.a(lmathlib.o): In function `math_exp': lmathlib.c:(.text+0x88c): undefined reference to `exp' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cos': lmathlib.c:(.text+0x8cc): undefined reference to `cos' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cosh': lmathlib.c:(.text+0x90c): undefined reference to `cosh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan': lmathlib.c:(.text+0x94c): undefined reference to `atan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan2': lmathlib.c:(.text+0x9a8): undefined reference to `atan2' /usr/local/lib/liblua.a(lmathlib.o): In function `math_asin': lmathlib.c:(.text+0x9ec): undefined reference to `asin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_acos': lmathlib.c:(.text+0xa2c): undefined reference to `acos' /usr/local/lib/liblua.a(loadlib.o): In function `ll_loadfunc': loadlib.c:(.text+0x8e9): undefined reference to `dlsym' loadlib.c:(.text+0x950): undefined reference to `dlopen' loadlib.c:(.text+0x981): undefined reference to `dlerror' loadlib.c:(.text+0x9a1): undefined reference to `dlerror' /usr/local/lib/liblua.a(loadlib.o): In function `gctm': loadlib.c:(.text+0xd1c): undefined reference to `dlclose' （4）方法四，不成功，使用lua_open函数，与方法三相比增加了-ldl，编译情况如下：
tao@tao:~/lua-5.2.0$ gcc -o a a.c -I/usr/local/include/ -L/usr/local/lib/ -llua -lm -ldl a.c: 在函数‘main’中: a.c:9:24: 警告： 初始化时将整数赋给指针，未作类型转换 [默认启用] /tmp/cctbGHDQ.o: In function `main': a.c:(.text+0x23): undefined reference to `lua_open'（5）方法五，成功，修改lua_open函数为luaL_newstate函数，再用同样的编译命令编译，成功
多查资料，多试验，相信自己一定可以学好Lua的，唉，领导给的任务，好好学习
