Re: C helloworld from inside Ravi

[Dibyendu Majumdar <mobile@...>]

On 20 June 2017 at 01:13, Sean Conner <sean@conman.org> wrote:
>   Nice.  Are you planning on supporting?
>
>         local testfunc = [[
>         #include <stdio.h>
>         #include <lua.h>
>
>         int TestFunc(lua_State *L)
>         {
>           puts("hello world!\n");
>           return 0;
>         }
>         ]]
>

Yes a pre-processor is present. However to successfully parse header
files many platform specific extensions have to be understood by the C
parser, and the underlying implementation being derived from Linux
Sparse project doesn't understand MSVC extensions.

>   That's something my own C compiler module [1] does:
>
>         local cc = require "org.conman.cc"
>
>         local CODE = [[
>         #include <stdio.h>
>         #include <lua.h>
>
>         int TestFunc(lua_State *L)
>         {
>           puts("hello world!\n");
>           return 0;
>         }
>         ]]
>
>         local f = cc.compile("TestFunc",CODE)
>         f()
>
>   -spc
>
> [1]     https://github.com/spc476/lua-conmanorg/blob/master/lua/cc.lua [2]
>
> [2]     It's based on TCC, not LLVM.  It also adds another loader to load
>         lua modules written in C directly from C source code.
>

Cool. But TCC is GPL licensed.

Regards