Re: [Qemu-devel] c99 or not?

[Andreas Färber]

Am 18.08.2008 um 00:33 schrieb François Revol:

> As a BeOS and Haiku dev, I'm used to having to "fix" apps back to c89
> to get them working with gcc2 because we are forced to stick to it due
> to the C++ ABI breackage.
> Haiku shall also provice gcc4 soon, and it might be possible to get
> gcc4 usable under BeOS, but it's like hunting a fly with a hand
> grenade.

It's not just about where variables are declared or how fields are  
initialized, but also some assumptions that cannot safely be made in  
ANSI C (iirc someone from Plan 9 had complained, too). Anyway, a lot  
of code has recently been reworked to consequently use C99 features,  
so reverting those is unlikely to happen.

QEMU doesn't use C++ to my knowledge, so it should work just fine  
across ABIs. Just means you'd currently have to cross-compile for  
Haiku. TCG and the recent addition of a --disable-aio switch for  
OpenBSD should help with that if you want to do it.

> I didn't try to build QEMU on BeOS for quite some time, not even
> sure it'd still build. I don't know if Mickael Lotz (BeOS port
> maintainer IIRC) has recent builds either.

Michael has apparently posted 0.9.1 on BeBits:
http://www.bebits.com/app/4208

Didn't try it though, I rather run BeOS or Haiku as guests. Michael  
said his patches were very intrusive, so he doesn't post them here.

Andreas