gcc compiler options on MAC OSX

[Ed Kelly]

OK here's what I found.

The pkg_config problem was solved by installing pkg_config in /usr instead of /usr/local (./configure --prefix=/usr) and the PD object compiled successfully using 
  gcc -bundle -undefined suppress -flat_namespace -o aubio.pd_darwin *.o

but...

PD can't load the object. Despite doing a make install, and all the standalone aubio programs installed successfully, PD's output window gives the message:

link error 0  dyld: /Users/lccuser/Edkelly/Software/Pd-0.39-2.app/Contents/Resources/Scripts/../bin/pd undefined symbols:
_aubio_beattracking_do
_aubio_onsetdetection
_aubio_peakpick_pimrt
_aubio_peakpick_pimrt_wt

and so on. Then of course:
aubio: can't load library

So it is not linked to the libaubio files? I am not sure how to resolve this...

Best,
Ed


Paul Brossier <piem at altern.org> wrote: Hi Ed,

Thanks for your report.

On Tue, Aug 15, 2006 at 03:11:53PM +0100, Ed Kelly wrote:
> Hi Paul,
> 
> I'm having some problems building the aubio pd
> externals on Mac OSX. I had to set PKG_CONFIG_PATH
> environment variables for the sources for libsndfile,
> libsamplerate and fftw3 manually, then the
> libtoolkludge passes a couple of unrecognized options
> to gcc and ld.

I think the pkg-config issue as a bug in pkg-config, or maybe a missing
compilation flag to it. If package descriptions get installed by default
in some location, then pkg-config should look for them in that location
by default. There is not much we could do in aubio to solve it anyway.

> gcc -shared option is not supported in Apple's gcc
> 3.3, and ld -export_dynamic does not work either. the
> first is documented here:
> http://developer.apple.com/documentation/DeveloperTools/gcc-3.3/gcc/Link-Options.html
> but 
> I cannot find documentation on the ld option
> -export_dynamic.

Yes, the PD plugin lacks the correct command line to create the external
on OS X. Reading other external Makefiles, it seems the following
command should create aubio.pd_darwin correctly:

  gcc -bundle -undefined suppress -flat_namespace -o aubio.pd_darwin *.o

or:

  gcc -bundle -bundle_loader 
 -flat_namespace -o aubio.pd_darwin *.o

See also http://lists.puredata.info/pipermail/pd-dev/2003-05/001238.html

I don't have access to a OS X at the moment. Let us know if this works for you!

Thanks, Paul


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