Re: Using Lua in a C(++) program

[Johannes Hager <hager.j@...>]

Now i have this problem in C++:

	/tmp/cc71gCXy.o(.text+0x11): In function `main':
	: undefined reference to `lua_open()'
	/tmp/cc71gCXy.o(.text+0x1f): In function `main':
	: undefined reference to `lua_close(lua_State*)'
	collect2: ld returned 1 exit status

Have someone a gues? I have linked it witch -llua, and the same as c works 
fine. 

	

> I'm not sure your c++ problem is based on Lua.
> The line you reported earlier:
>
> 	/tmp/ccV9wgqi.o(.eh_frame+0x11): undefined reference to
> `__gxx_personality_v0'
>
> comes from mingw32/gcc when it tries to compile stuff as c++ but
> doesn't find the necessary runtime libraries when linking it.. I faced
> this when my source had CAPITAL names (unintentional though it was).
> The .C suffix confuses mingw to think it's c++.
>
> So first thing:
> - Make sure all your C files are *.c and all -real- c++ files *.cpp.
> NEVER use capital c. :)
>
> If that's not the cure:
> - Lua itself should compile either as c, or c++ (there really is some
> difference, under the hood). So i don't think it's that.
>
> - If you're still missing the c++ runtime libs, there's probably some
> link flag or something you need to set. Look with
> "__gxx_personality_v0" via Google, perhaps?
>
> Yours,
> -ak
>
>
> Johannes Hager kirjoittaa keskiviikkona, 11. kesäkuuta 2003, kello
>
> 01:55:
> > Hi,
> >
> > Fine it works. But can anyone tell me how to use lua in a C++ project.
> > By the
> > way their was the problem. I have used the gcc but named my file
> > *.cpp, how
> > stupid.
> >
> >> You need to add -lm to the compile (that's the math library)