At 6:13 PM -0800 11/5/12, Jim Ham wrote:
>> <snip>
The error in the log is:
:info:build filter_yadif.c: In function 'filter_line_mmx2':
:info:build filter_yadif.c:372: error: can't find a register in
class 'GENERAL_REGS' while reloading 'asm'
:info:build filter_yadif.c:380: error: can't find a register in
class 'GENERAL_REGS' while reloading 'asm'
:info:build filter_yadif.c:372: error: 'asm' operand has
impossible constraints
:info:build filter_yadif.c:372: error: 'asm' operand has
impossible constraints
:info:build filter_yadif.c:380: error: 'asm' operand has
impossible constraints
:info:build filter_yadif.c:380: error: 'asm' operand has
impossible constraints
:info:build make[2]: *** [filter_yadif.o] Error 1
It looks like this assembly-language code is not compatible with
the processor in your Mac mini. Specifically it looks like the
code is trying to use more processor registers than your processor
has available. That's according to this page I found with a quick
search:
http://stackoverflow.com/questions/8275859/error-cant-find-a-register-in-class-general-regs-while-reloading-asm
Only the first series of Intel Macs used the 32-bit Core
processor; all the others use 64-bit processors, and 64-bit Intel
processors have a lot more registers.
You should report this problem to the developers of mythtv so
they can fix it.
A solution might be to tell mythtv to not use assembly code. I'm
not sure what configure arguments might need to be added to do
that.
Thanks for digging that up, Ryan. I know there is a configure
flag to not use Yasm--but I think these are in-line assembler
commands. I'll have to check if/how to disable.
> In case I need to, how does one check the specific processor
model in the portfile? Could you point me to some sample code?
>
> Craig
Thanks for looking into this. I believe that my best bet for getting
Myth to work on my mini is to put in the Core 2 Duo processor. Even
if MythTV compiles performance may be an issue with the current 32
bit Core Duo.
FYI I get the same errors with Xcode 3.2.6 - no surprise.
Thanks for reporting back. Yes, the Core Duo was going to be
marginal for frontend duties; losing the performance boost of the
assembler code would make it worse.
I am going to have a go at getting it to compile without the asm bits
but tomorrow is a writeoff and Wednesday may be a problem too.
Craig
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