building on MAC snow leopard

Martin_De_Kauwe · June 21, 2010, 11:41am

Hi,

So I have successfully built a 64bit version of Numpy, Scipy from svn and am
using python version 2.6.5. However in trying to follow the instructions on
this blog (http://blog.hyperjeff.net/?p=160), namely...

changing the make.osx file to

MACOSX_DEPLOYMENT_TARGET=10.6

PREFIX=/usr/local

## You shouldn't need to configure past this point (and yet…)

PKG_CONFIG_PATH="${PREFIX}/lib/pkgconfig"
CFLAGS="-arch i386 -arch x86_64 -I${PREFIX}/include
-I${PREFIX}/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk"
LDFLAGS="-arch i386 -arch x86_64 -L${PREFIX}/lib
-syslibroot,/Developer/SDKs/MacOSX10.6.sdk"
FFLAGS="-arch i386 -arch x86_64"

and uncommenting wxagg = False from the setup.cfg

I still seem to run into trouble.

Command I am running is sudo make -f make.osx fetch deps mpl_build
mpl_install

which runs into trouble to do with the libpng lib...

x libpng-1.2.39/scripts/makefile.ne12bsd
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for gcc... gcc
checking for C compiler default output file name...
configure: error: in
`/Users/mdekauwe/src/packages/matplotlib_svn/libpng-1.2.39':
configure: error: C compiler cannot create executables
See `config.log' for more details.
make: *** [png] Error 77

I had a look at the config.log file in the libpng directory and the main
thing I can see is...

configure:3266: checking for C compiler default output file name
configure:3288: gcc -arch i386 -arch x86_64 -I/usr/local/include
-I/usr/local/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk
-arch i386 -arch x86_64 -L/usr/local/lib
-syslibroot,/Developer/SDKs/MacOSX10.6.sdk conftest.c >&5
gcc: unrecognized option '-syslibroot,/Developer/SDKs/MacOSX10.6.sdk'
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"

Not sure what the issue with the arch flag is?

Would really appreciate some thoughts on this, many thanks

Martin

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Ian_Stokes-Rees · June 21, 2010, 1:26pm

So I have successfully built a 64bit version of Numpy, Scipy from svn and am
using python version 2.6.5. However in trying to follow the instructions o

Do you have some notes on how you achieved this? It is more than I've
been able to do.

I had a look at the config.log file in the libpng directory and the main
thing I can see is...

configure:3266: checking for C compiler default output file name
configure:3288: gcc -arch i386 -arch x86_64 -I/usr/local/include
-I/usr/local/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk
-arch i386 -arch x86_64 -L/usr/local/lib
-syslibroot,/Developer/SDKs/MacOSX10.6.sdk conftest.c >&5
gcc: unrecognized option '-syslibroot,/Developer/SDKs/MacOSX10.6.sdk'
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"

I'm not a build or gcc expert, but am interested in the solution to this
-- I have also tried (without success) to get this compiled on OS X
10.6. A few potentially useful pointers:

1. Check that you have the latest version of XCode.

2. Check that you have a recent version of gfortran.

3. Check your path to various tools:

http://mail.scipy.org/pipermail/numpy-discussion/2007-January/025669.html

Ian

···

On 6/21/10 7:41 AM, mdekauwe wrote:

--
Ian Stokes-Rees, PhD W: http://hkl.hms.harvard.edu
ijstokes@...3143... T: +1 617 432-5608 x75
NEBioGrid, Harvard Medical School C: +1 617 331-5993

Martin_De_Kauwe · June 21, 2010, 2:03pm

Do you have some notes on how you achieved this? It is more than I've
been able to do.

Yes I firstly setup a brand new python, i.e. not the one that ships with
snow leopard (ver2.6.5). Then followed everything on
http://blog.hyperjeff.net/?p=160

I'm not a build or gcc expert, but am interested in the solution to this
-- I have also tried (without success) to get this compiled on OS X
10.6. A few potentially useful pointers:

1. Check that you have the latest version of XCode.

yep

2. Check that you have a recent version of gfortran.

yep

3. Check your path to various tools:
http://mail.scipy.org/pipermail/numpy-discussion/2007-January/025669.html

yep.

I came across this which seems to be the ticket, though this also doesn't
work...

http://www.trondkristiansen.com/?page_id=79

when I follow it through it builds but I get a seg fault when I run it. I
payed more attention to the build and I think the issue stems from the arch
flags...

eg.

[HAL-9000@...3168...]$ make -f make.osx mpl_build
blah, blah
ld: warning: in /usr/local/lib/libstdc++.dylib, file was built for
unsupported file format which is not the architecture being linked (i386)

thanks

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Martin_De_Kauwe · June 21, 2010, 6:30pm

This doesn't solve the original problem and I know I worked out a way to do
it before my hard disk messed up! But it seems you can get a version going
through macports...

sudo port install py26-matplotlib
sudo port install python_select
sudo python_select python26

then edit your .matplotlib/matplotlibrc file (make one if you don't have
it). And put backend: macosx into it.

Should work fine. Does for me. Now I don't know how one would set python up
so it doesn't find my other version, other than moving paths around. Or
setting it up so easy_install using the /opt/ version of python. Anyone?

thanks

Martin

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