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Asked: 2026-05-15T08:04:41+00:00

ORIGINAL MESSAGE (now outdated): After running python setup.py install I get the following: Warning:

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ORIGINAL MESSAGE (now outdated):

After running python setup.py install I get the following:

Warning: Unable to find 'pg_config' filebuilding 'psycopg2._psycopg' extension
gcc-4.0 -arch ppc -arch i386 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -   DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.2.1 (dt dec ext pq3)" -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -DHAVE_PQPROTOCOL3=1 -I/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -I. -c psycopg/psycopgmodule.c -o build/temp.macosx-10.3-fat-2.6/psycopg/psycopgmodule.o
unable to execute gcc-4.0: No such file or directory
error: command 'gcc-4.0' failed with exit status 1

There’s probably something screamingly obvious there to anyone who knows the first thing about back-end web programming, but unfortunately it’s all gobbledegook to me. The psycopg2 documentation was not helpful.

UPDATE early 12 June: After updating all my software, the error message has changed.

Now, when I run “python setup.py install” I get the following:

Warning: Unable to find 'pg_config' filebuilding 'psycopg2._psycopg' extension
gcc-4.0 -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.2.1 (dt dec ext pq3)" -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -DHAVE_PQPROTOCOL3=1 -I/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -I. -c psycopg/psycopgmodule.c -o build/temp.macosx-10.3-fat-2.6/psycopg/psycopgmodule.o

followed by a very long list of other error messages.

It may or may not be relevant that when I put “gcc-4.0” into Terminal, it comes back with:

i686-apple-darwin10-gcc-4.0.1: no input files

UPDATE 12:41 GMT 12 June: I thought the macports installation had worked, but when I tried running a site it ended with the following error:

raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named psycopg2

So I guess that means that psycopg2 hadn’t installed properly after all. So I’m back to square one.

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1 Answer

  1. Editorial Team

    I think you’re making it harder than it has to be. Rather than running setup.py directly, I suggest letting MacPorts do it for you:

    sudo port install py26-psycopg2

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