py27-gtk: /opt/local/lib/libpng12.la: No such file or directory

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sudo port upgrade outdated
--->  Computing dependencies for freetype
--->  Fetching archive for freetype
--->  Attempting to fetch freetype-2.4.6_0.darwin_10.x86_64.tbz2 from http://packages.macports.org/freetype
--->  Attempting to fetch freetype-2.4.6_0.darwin_10.x86_64.tbz2.rmd160 from http://packages.macports.org/freetype
--->  Installing freetype @2.4.6_0
--->  Cleaning freetype
--->  Computing dependencies for freetype
--->  Deactivating freetype @2.4.5_1
--->  Cleaning freetype
--->  Activating freetype @2.4.6_0
--->  Cleaning freetype
--->  Computing dependencies for py27-gtk
--->  Building py27-gtk
Error: Target org.macports.build returned: shell command failed (see log for details)
Log for py27-gtk is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_python_py27-gtk/py27-gtk/main.log
Error: Problem while installing py27-gtk
To report a bug, see <http://guide.macports.org/#project.tickets>

[pablo@…]

main log

[pablo@…]

main log

[ryandesign (Ryan Carsten Schmidt)]

Please use WikiFormatting and preview before submitting, fill in the Port field, and do not fill in the Milestone field for port tickets.

The log says:

:info:build grep: /opt/local/lib/libpng12.la: No such file or directory
:info:build sed: /opt/local/lib/libpng12.la: No such file or directory
:info:build libtool: link: `/opt/local/lib/libpng12.la' is not a valid libtool archive

libpng was updated from 1.2.x to 1.4.x months ago so this should not be happening if your ports are up to date. This build is also not clean. Please clean and try again.

sudo port clean py27-gtk