Lua移植到arm上?并实现在arm上?可以让lua脚本调c语言，C语言调用lua脚本

首先参考http://wiki.chumby.com/index.php?title=Lua&printable=yes上的做法，修改lua-5.1.4.tar.gz.?上的Makefile，编译过后会在/src目录下生成可以在arm-linux上可以运行的lua解析器和luac编译器。我们在arm-linux下运行lua脚本，只需要用到lua解析器就ok了，所以，我们把lua?cp到我们开发板linux系统上的?/bin目录下就ok了。这样，在开发板上的linux系统就可以自动地找到lua并使用它了。

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Lua?is?a?lightweight?scripting?language?-?see?the?Lua?website

Building?lua

·?download?and?unpack?the?lua?source?distribution?lua-5.1.4.tar.gz.

·?edit?src/Makefile?

o?line?10?

CC=arm-linux-gcc

o?line?12?

AR=arm-linux-ar

o?line?13?

RANLIB=arm-linux-ranlib

o?line?15?

LIBS=?-lm?$(MYLIBS)?-static

o?line?99,?remove?-lreadline?-lhistory?-lncurses??//这里可能行数有点偏差

??把这行的内容$(MAKE)?all?MYCFLAGS=-DLUA_USE_LINUX?MYLIBS="-Wl,-E?-ldl?-lreadline?-lhistory?-lncurses"

????改成????

?

·?edit?src/luaconf.h,?comment?out?line?39?(disable?LUA_USE_READLINE)

·?do:

?make?linux

?arm-linux-strip?src/lua

?

?

?

接下来，我们看看如何实现在arm?linux上实现让lua脚本调c语言：

?

1.写一个jiaohu.c文件:

?

#include?<math.h>

#include?"lua.h"

#include?"lualib.h"

#include?"lauxlib.h"

?

?

static?int?my_foo(lua_State*?L)

{

???????int?n?=?lua_gettop(L);

???????int?isnum?=?lua_isnumber(L,?1);

???????int?m?=?lua_tonumber(L,?1);

???????printf("%d?%d?%dn",?n,?isnum,?m);

???????lua_pushnumber(L,m);

???????lua_pushstring(L,"foo?ret?stringn");

???????return?2;

}

?

LUALIB_API??int?my_init(lua_State*?L)

{

???????lua_register(L,?"foo",?my_foo);

???????return?0;

}

?

用?arm-linux-gcc?-I/root/lua-5.1.4/src/??-L/root/lua-5.1.4/src/??-shared?-fPIC?jiaohu.c?-o?jiaohu.so编译，这样就把可以加到lua上的动态库编译好了。

?

再写一个lua的调用脚本?test.lua：

?

package.loadlib("./jiaohu.so",?"my_init")()

a?,b=foo(22,33)

?

接下来就是把jiahu.so?和　test.lua放到arm?linux的某个测试用的临时目录下就ok了

然后执行?一下?>lua?test.lua

显示??????????>1?1?22

成功实现在arm?linux上实现让lua脚本调c语言了

?

现在该来看看如何实现在arm?linux下如何实现?C调用lua脚本了

先建立一个?test.c文件：

#include?<stdio.h>???

#include?<lua.h>??

#include?<lualib.h>??

#include?<lauxlib.h>??

??

lua_State*?L;??

int?main?(?int?argc,?char?*argv[]?){??

L?=?luaL_newstate();??

?? luaL_openlibs(L);??

//?? luaL_dofile(L,?"test.lua");??

? luaL_loadfile(L,?"./test.lua");

? int?iError?=?lua_pcall(L,?0,?0);??

????if?(iError)??

????{??

?printf("error?%d?n",iError);

????????lua_close(L);??

????????return?1;??

????}??

????int?a?=?11?;??

????int?b?=?12?;??

????lua_getglobal(L,"sum");???????????????

????lua_pushinteger(L,a)?;??

????lua_pushinteger(L,b)?;??

????int?ret?=?lua_pcall(L,2,1,0)?;??

????if?(?ret?!=?0?)??

?????{

?printf("errorn");

?return?1;??

?????}

? printf("sum:%d?+?%d?=?%ldn",a,b,lua_tointeger(L,-1))?;??

????lua_pop(L,1);??

????/*?清除Lua?*/??

??lua_close(L);??

??return?0;??

?}?

?

再建立一个test.lua文件

width=1?;

height=2?;

function?sum(a,b)

????return?a+b?;

End

?

用一下命令来编译test.c文件

#arm-linux-gcc?-I/root/lua_tool/lua-5.1.4-armlinux/src/??-L/root/lua_tool/lua-5.1.4-armlinux/src/?-lm?-DLUA_USE_READLINE?test.c?/root/lua_tool/lua-5.1.4-armlinux/src/liblua.a?-o?test2?-ldl

?

把生成的test2?和test.lua文件拷到arm?linux上运行：

#Lua??test2

就会显示#sum:11?+?12?=?23

?

?

?

参考文章：

http://hi.baidu.com/hqwfreefly/blog/item/5724afef3b6018dab31cb1d1.html

http://hi.baidu.com/mikenoodle/blog/item/5fd129dd1069a9de8c102948.html

http://wenku.baidu.com/view/0d557b0416fc700abb68fc73.html

http://www.extgui.com/?p=157

? ?

lua编译问题总结

gcc -lm? -g -o test test.c /usr/local/lib/liblua.a -ldl

如果少-ldl，那么编译就会报：

gcc -lm? -g -o test test.c /usr/local/lib/liblua.a??

/usr/local/lib/liblua.a(loadlib.o): In function `gctm':
loadlib.c:(.text+0x35): undefined reference to `dlclose'
/usr/local/lib/liblua.a(loadlib.o): In function `ll_loadfunc':
loadlib.c:(.text+0xc0): undefined reference to `dlopen'
loadlib.c:(.text+0xfc): undefined reference to `dlsym'
loadlib.c:(.text+0x198): undefined reference to `dlerror'
loadlib.c:(.text+0x1bb): undefined reference to `dlerror'

如果少liblua.a ，就会报如下问题：

[wangbin@tuan lua]$ gcc -lm? -g -o test test.c? -ldl????????????????????? ?
/tmp/ccCT0d24.o: In function `main':
/home/wangbin/work/tmp/lua/test.c:26: undefined reference to `luaL_newstate'
/home/wangbin/work/tmp/lua/test.c:27: undefined reference to `luaL_openlibs'
/home/wangbin/work/tmp/lua/test.c:29: undefined reference to `luaL_loadbufferx'
/home/wangbin/work/tmp/lua/test.c:29: undefined reference to `lua_pcallk'
/home/wangbin/work/tmp/lua/test.c:32: undefined reference to `lua_tolstring'
/home/wangbin/work/tmp/lua/test.c:33: undefined reference to `lua_settop'
/home/wangbin/work/tmp/lua/test.c:36: undefined reference to `lua_close'
collect2: ld returned 1 exit status

如果少-lm，那么编译结果如下：

[wangbin@tuan lua]$ gcc -g -o test test.c /usr/local/lib/liblua.a -ldl? /usr/local/lib/liblua.a(lobject.o): In function `luaO_arith': lobject.c:(.text+0xdf): undefined reference to `pow' /usr/local/lib/liblua.a(lvm.o): In function `luaV_execute': lvm.c:(.text+0x159a): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sin': lmathlib.c:(.text+0x3e): undefined reference to `sin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sinh': lmathlib.c:(.text+0x6e): undefined reference to `sinh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cos': lmathlib.c:(.text+0x9e): undefined reference to `cos' /usr/local/lib/liblua.a(lmathlib.o): In function `math_cosh': lmathlib.c:(.text+0xce): undefined reference to `cosh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tan': lmathlib.c:(.text+0xfe): undefined reference to `tan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_tanh': lmathlib.c:(.text+0x12e): undefined reference to `tanh' /usr/local/lib/liblua.a(lmathlib.o): In function `math_asin': lmathlib.c:(.text+0x15e): undefined reference to `asin' /usr/local/lib/liblua.a(lmathlib.o): In function `math_acos': lmathlib.c:(.text+0x18e): undefined reference to `acos' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan': lmathlib.c:(.text+0x1be): undefined reference to `atan' /usr/local/lib/liblua.a(lmathlib.o): In function `math_atan2': lmathlib.c:(.text+0x1fb): undefined reference to `atan2' /usr/local/lib/liblua.a(lmathlib.o): In function `math_fmod': lmathlib.c:(.text+0x2db): undefined reference to `fmod' /usr/local/lib/liblua.a(lmathlib.o): In function `math_sqrt': lmathlib.c:(.text+0x391): undefined reference to `sqrt' /usr/local/lib/liblua.a(lmathlib.o): In function `math_pow': lmathlib.c:(.text+0x3d3): undefined reference to `pow' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log': lmathlib.c:(.text+0x450): undefined reference to `log' lmathlib.c:(.text+0x460): undefined reference to `log' lmathlib.c:(.text+0x486): undefined reference to `log10' lmathlib.c:(.text+0x4aa): undefined reference to `log' /usr/local/lib/liblua.a(lmathlib.o): In function `math_log10': lmathlib.c:(.text+0x4de): undefined reference to `log10' /usr/local/lib/liblua.a(lmathlib.o): In function `math_exp': lmathlib.c:(.text+0x50e): undefined reference to `exp' collect2: ld returned 1 exit status