Re: Proposal: smartlua
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- Subject: Re: Proposal: smartlua
- From: Dirk Laurie <dirk.laurie@...>
- Date: Thu, 7 Mar 2013 11:32:38 +0200
2013年3月7日 steve donovan <steve.j.donovan@gmail.com>:
> Interesting that one of the reasons Go is getting traction on servers
> comes from the single statically-linked executable it generates.
It is not as well known as it deserves to be (i.e. the Wiki has no article
containing the word "executable" and a title that makes you think
that's it) that making a single statically-linked executable from Lua
source is quite easy.
I append a "hello, world" demo. Just change the part defining your
application. Note the whitespace before the closing double-quotes.
Then compile it with the same command that your system uses
to compile the Lua standalone interpreter, and you are done.
For example, on Linux it's
cc hello.c -llua -lm -ldl -o hello
#include <stddef.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
static char* LuaCode =
"print'Hello, world!' "
"io.write('? ') "
"input = io.read() "
"print'Read the full manual, please.' "
"return "
;
int main() {
int err;
lua_State *L=luaL_newstate();
if (!L) {
fprintf(stderr,"Could not start program, not enough memory.\n");
return -1; }
luaL_openlibs(L);
err = luaL_loadstring(L,LuaCode);
if (err==LUA_ERRSYNTAX) fprintf(stderr,
"Invalid Lua code. Contact the program author.\n");
if (err==LUA_ERRMEM)
fprintf(stderr,"Could not load program, not enough memory.\n");
if (err!=LUA_OK) return 100+err;
err = lua_pcall(L, 0, 0, 0);
if (err) fprintf(stderr,"--> %s\n",lua_tostring(L,-1));
lua_close(L);
}