gimp2 configuration problem

checking for GTK+ - version >= 2.4.4... no
*** Could not run GTK+ test program, checking why...
*** The test program compiled, but did not run. This usually means
*** that the run-time linker is not finding GTK+ or finding the wrong
*** version of GTK+. If it is not finding GTK+, you'll need to set your
*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point
*** to the installed location  Also, make sure you have run ldconfig if that
*** is required on your system
***
*** If you have an old version installed, it is best to remove it, although
*** you may also be able to get things to work by modifying LD_LIBRARY_PATH
configure: error: Test for GTK+ failed. See the file 'INSTALL' for help.


is what I get after running port install gimp2