gegl @0.2.0_12 - OSX 10.6.8 - build fails

[macports@…]

I have been having problems with my Macports installation. Just today, I removed everything in an attempt to replace webkit-gtk with webkit-gtl-2.0 per instructions from a failed build. Reinstallation of everything had been going smoothly until I tried installing gimp2. One of its dependencies is gegl.

I found no tickets for gegl problems with my local version @0.2.0_12.

I receive four log file errors of the form: /opt/local/include/pngconf.h:366:52: error: token is not a valid binary operator in a preprocessor subexpression
"# if !defined(PNG_USE_RESULT) && has_attribute(warn_unused_result)"

The other three tokens reported are PNG_NORETURN, PNG_ALLOCATED, and PNG_DEPRECATED with appropriate text in the has_attribute( <VALUE> ) portion of the four lines. Each error also has a text pattern under the error with a circumflex pointing to the left-paren after the "has_attribute" token.

There are also numerous warnings generated that appear to be of a similar form.

I run OSX 10.6.8 server on a several year old MacPro. Before I was instructed by a build error to replace webkit-gtk with webkit-gtk-2.0, gimp2 built cleanly. However, it had been some months since I had done a "selfupdate" on my macports installation. The errors could have crept in over the interval without weekly "selfupdate" executions.

I did run a "port clean gegl gimp2" and tried the gimp2 install again, but the error is repeated.

The log file generated will be attached to this ticket.

[macports@…]

main.log file from gegl build