difficulties with MythTV on a MacMini1.1

[Craig Treleaven]

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