py27-matplotlib cannot find numpy

[mf2k (Frank Schima)]

I'm seeing the following error on one computer running Mac OS X 10.8.2 and Xcode 4.5.2. It installs fine on the rest of my 10.8.2 Macs but something is different about this one.

:notice:build --->  Building py27-matplotlib
:debug:build Executing proc-pre-org.macports.build-build-0
:debug:build Executing org.macports.build (py27-matplotlib)
:debug:build Environment: CPATH='/opt/local/include' CFLAGS='-arch x86_64' CXXFLAGS='-arch x86_64' LIBRARY_PATH='/opt/local/lib' MACOSX_DEPLOYMENT_TARGET='10.8' PKG_CONFIG_PATH='/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/pkgconfig/' CXX='/usr/bin/clang++' CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-matplotlib/py27-matplotlib/work/.CC_PRINT_OPTIONS' F90FLAGS='-m64' LDFLAGS='-arch x86_64' FCFLAGS='-m64' OBJC='/usr/bin/clang' OBJCFLAGS='-arch x86_64' FFLAGS='-m64' CC_PRINT_OPTIONS='YES' MPLIB_BASE='/opt/local' CC='/usr/bin/clang'
:debug:build Assembled command: 'cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-matplotlib/py27-matplotlib/work/matplotlib-1.2.0" && /opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 setup.py --no-user-cfg build'
:debug:build Executing command line:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-matplotlib/py27-matplotlib/work/matplotlib-1.2.0" && /opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 setup.py --no-user-cfg build 
:info:build basedirlist is: ['/opt/local']
:info:build ============================================================================
:info:build BUILDING MATPLOTLIB
:info:build             matplotlib: 1.2.0
:info:build                 python: 2.7.3 (default, Dec 27 2012, 09:11:40)  [GCC 4.2.1
:info:build                         Compatible Apple Clang 4.1
:info:build                         ((tags/Apple/clang-421.11.66))]
:info:build               platform: darwin
:info:build 
:info:build REQUIRED DEPENDENCIES
:info:build                  numpy: no
:info:build                         * You must install numpy 1.4 or later to build
:info:build                         * matplotlib.
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-matplotlib/py27-matplotlib/work/matplotlib-1.2.0" && /opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 setup.py --no-user-cfg build 
:info:build Exit code: 1
:error:build org.macports.build for port py27-matplotlib returned: command execution failed

But numpy is installed:

$ port installed py27-numpy
The following ports are currently installed:
 py27-numpy @1.6.2_1+atlas+gcc47 (active)

Let me know what other information you need to debug this.