Re: [Discuss-gnuradio] Re: Intel Mac GNU Radio Install Update Soon

[Dave]

Michael,

Thanks for the information, that is great.

On Jun 1, 2006, at 3:24 PM, Michael Dickens wrote:

> Dave - You can do all of the background install using DarwinPorts,  
> but, as you found out, FFTW has some issues.  The problem is not in  
> optimization, but rather in the way Apple has tweaked GCC's use of  
> "pentium-pro" for the architecture.  Most files compile just fine  
> but a few (4-5) need this option removed for correct compilation  
> (with optimization -03 still on, which is good).

The FFTW folks got back to me.  Here is what they had to say:

        There are two known problems on the Intel Macs.

	First, Apple's gcc 4.0.1 on Intel has a bug that causes it to crash  
when compiling our kernel/trig.c file  ... the workaround is to  
compile this file without optimization:
    cd kernel; make CFLAGS=" " trig.lo

	Second, our CPU detection currently doesn't work for that machine.   
You can manually force it to tune for the pentium-m (which seems to  
be the best option for now) by configuring --with-gcc-arch=pentium-m

I haven't tried out the configure option, but that looks like it  
might make things a bit easier.


> I have submitted patches to Eric to fix the .align issue - some  
> compilers define that number in log2 while others use linear.  I'd  
> be happy to ship you my diff's if you have time to try them out.

Great!  I would be happy to.

> As of 1 week ago, there were no issues with gnuradio-core other  
> than the .align and a .global issue in the same .S files in  
> gnuradio-core/src/lib/filter .  Everything compiled and installed  
> correctly on a MacBook Pro.  Admittedly, Apple has released XCode  
> 2.3 since then, so if you're using that version there might be an  
> issue.  We haven't finished testing under XCode 2.3 yet, maybe due  
> to lack of time.

I haven't updated XCode yet.  I'll do that and give it a go.

> Permissions are generally a local-computer issue, not one of how  
> they are stored in the CVS or SVN repository.
>
> I'd be willing to bet that the compile issue is some combination of  
> your shell environment and LIBTOOL not working together.  -Unless-  
> it's XCode 2.3, then it's most likely not a Mac-Intel issue.

OK.  I'll check it out.

> I have updated my install guide < http://www.nd.edu/~mdickens/ 
> GNURadio/ > to include the latest changes for FFTW to compile using  
> DarwinPorts on an Intel-Mac.

Great!  I'll try it out.

> I'm happy to help you debug your compile issue, probably off-list  
> is best. - MLD

Sounds good.  Thanks again for your help.  Much appreciated.

Dave.