Re: [ANN] Lua 5.3.0 (rc3) now available

[Roberto Ierusalimschy <roberto@...>]

> Am 03.01.2015 um 15:23 schröbte Lorenzo Donati:
> >
> >Compiled with TDM-GCC 4.8.1-32bit under Windows-7 64bit (yes 32 bit
> >compiler in a 64bit machine) and got some warnings:
> >
> [...]
> >lua.c: In function 'pmain':
> >lua.c:584:5: warning: implicit declaration of function '_fileno'
> >[-Wimplicit-function-declaration]
> >      if (lua_stdin_is_tty()) {  /* running in interactive mode? */
> >      ^
> >liolib.c: In function 'io_pclose':
> >liolib.c:260:3: warning: implicit declaration of function '_pclose'
> >[-Wimplicit-function-declaration]
> >    return luaL_execresult(L, l_pclose(L, p->f));
> >    ^
> >liolib.c: In function 'io_popen':
> >liolib.c:268:3: warning: implicit declaration of function '_popen'
> >[-Wimplicit-function-declaration]
> >    p->f = l_popen(L, filename, mode);
> >    ^
> >liolib.c:268:8: warning: assignment makes pointer from integer without a
> >cast [enabled by default]
> >    p->f = l_popen(L, filename, mode);
> >         ^
> 
> Those are probably the result of the new `-std=c99` flag in the
> makefile: `-std=c99` implies `__STRICT_ANSI__`, and the above
> mentioned functions are not declared if `__STRICT_ANSI__` is in
> effect.
> 
> We could replace `-std=c99` with `-std=gnu99` for all architectures,
> or just append `-std=gnu99` to the compiler command line (after the
> `-std=c99`) for the mingw target only.

Can someone check whether adding "CC=gcc -std=gnu99" to the call to
'make' solve these warnings (and define a working version of 'io.popen')?
Many thanks,

-- Roberto