RE: [Qemu-devel] [PATCH] get qemu to compile as 64-bit on Mac

[C.W. Betts]

----------------------------------------
> From: address@hidden
> To: address@hidden
> Subject: Re: [Qemu-devel] [PATCH] get qemu to compile as 64-bit on Mac
> Date: Tue, 3 Jun 2008 09:51:07 +0200
> 
> Hi,
> 
> Am 02.06.2008 um 23:25 schrieb C.W. Betts:
> 
>> This patch makes it so that you can compile qemu on Mac OS X Leopard  
>> as a 64-bit app.  This is heavily based on an earlier patch that had  
>> the same goal.
> 
> Could you clarify that? I assume you mean Alexander Graf's patch - I  
> remember it being split in multiple parts and being much larger. Is  
> the reduction due to TCG? Or what's the difference?
> 
Yes, it was based on Alexander Graf's patch, and I deliberately didn't add 
parts that would mess with dyngen.  In fact, the only host that I can build 
dyngen on is PowerPC 32-bit.  It also seems to work on GCC 4.  It might compile 
on 64-bit PowerPC, but I think it would be looking for code in 32-bit PowerPC 
and not 64-bit PowerPC.  That and the only targets that still use dyngen are 
PPC and MIPS.
>> Hint: in order to build qemu on another architecture, you have to  
>> modify the config-host.mak and the config-host.h file.  You have to  
>> set the ARCH_CFLAGS and ARCH_LDFLAGS in the .mak file to match the  
>> architecture that you want to build("-m32 -arch ppc" for PowerPC, "- 
>> m64 -arch x86_64" for 64-bit Intel, etc…), as well as the ARCH  
>> flag.  In the header file, change the HOST_PPC or HOST_I386 to the  
>> processor you want to build on.
And one thing I forgot was to make sure the HOST_LONG_BITS is the right amount; 
Mac OS X uses LP64 and, as such, Longs would be 64 instead of 32 on 64-bit 
Hosts.
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