Re: [Qemu-devel] QEMU host support

[Andreas Färber]

Am 16.10.2010 um 09:46 schrieb Stefan Hajnoczi:

> On Fri, Oct 15, 2010 at 5:51 PM, Jes Sorensen  
> <address@hidden> wrote:
> > Looking through some code in qemu-char.c I was wondering if we  
> > support
> > any other QEMU host target than Win32 which isn't covered by these  
> > defines:
> >
> > #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
> >    || defined(__NetBSD__) || defined(__OpenBSD__) ||
> > defined(__DragonFly__) \
> >    || defined(__GLIBC__)
>
> What about Haiku?  It uses __HAIKU__ but I'm not sure if it defines
> __GLIBC__ or even one of the others.

Apparently it doesn't define __GLIBC__ (it has a libroot that contains  
parts of glibc only). It definitely doesn't define any of the others.

If I add  || defined (__HAIKU__) to the list above, I get:

  CC    qemu-char.o
/Data/QEMU/qemu/qemu-char.c: In function 'qemu_chr_open_pty':
/Data/QEMU/qemu/qemu-char.c:982: warning: implicit declaration of  
function 'openpty'
/Data/QEMU/qemu/qemu-char.c:982: warning: nested extern declaration of  
'openpty'
/Data/QEMU/qemu/qemu-char.c:988: warning: implicit declaration of  
function 'cfmakeraw'
/Data/QEMU/qemu/qemu-char.c:988: warning: nested extern declaration of  
'cfmakeraw'
/Data/QEMU/qemu/qemu-char.c: In function 'tty_serial_ioctl':
/Data/QEMU/qemu/qemu-char.c:1149: error: 'TIOCMGET' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1149: error: (Each undeclared identifier  
is reported only once
/Data/QEMU/qemu/qemu-char.c:1149: error: for each function it appears  
in.)
/Data/QEMU/qemu/qemu-char.c:1151: error: 'TIOCM_CTS' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1153: error: 'TIOCM_CAR' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1155: error: 'TIOCM_DSR' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1157: error: 'TIOCM_RI' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1159: error: 'TIOCM_DTR' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1161: error: 'TIOCM_RTS' undeclared (first  
use in this function)
/Data/QEMU/qemu/qemu-char.c:1184: error: 'TIOCMSET' undeclared (first  
use in this function)
make: *** [qemu-char.o] Error 1

openpty() is defined in Haiku's BSD compatibility layer, in pty.h.  
Hacking the FreeBSD #include code path makes QEMU find it.
There's no cfmakeraw(). Reusing the one from the Sun code path seems  
to work.

I believe these TIOCM* defines were not supported in Haiku and we  
didn't find out where they originate from. They were not in POSIX.  
Anyone know off-hand?

Andreas