9.0 Bug: cannot build against python3.1, with two versions of python in the environment

I discussed this report with James Pye already, and he beleives it's a
configure script bug which should be fixed before release. Anyone
capable of taking it on?

-------- Original Message --------
Subject: [TESTERS] Configure/Build 9.0 rc1 - cannot build against
python3.1, with two versions of python in the environment
Date: Sat, 11 Sep 2010 13:12:13 -0400
From: Lou Picciano <LouPicciano(at)comcast(dot)net>
To: pgsql-testers(at)postgresql(dot)org

*[TEST REPORT]*
*[Release]:* 9.0 RC1
*[Test Type]:* Install (Build)
*[Test]:* Configure/Build 9.0 rc1 - cannot build against python3.1, with
two versions of python in the environment
*[Platform]:* Solaris 10 Sparc E450 Quad
*[Parameters]:*
--with-python \
*
--with-includes=/usr/local/include/python3.1:/usr/local/include:/usr/local/ssl/include

\
--with-libraries=/usr/local/lib/python3.1:/usr/local/lib:/usr/local/ssl/lib
\
CONFIGURE OUTPUT: -----------------------------------------
checking for python... /usr/bin/python
checking Python configuration directory... /usr/lib/python2.4/config
checking how to link an embedded Python application... -L/usr/lib
-lpython2.4 -lresolv -lsocket -lnsl -lrt -ldl -lm
configure: using CPPFLAGS= -I/usr/local/include/libxml2
-I/usr/local/include/python3.1 -I/usr/local/include -I/usr/local/ssl/include
configure: using LDFLAGS= -L/usr/local/lib -L/usr/local/lib/python3.1
[Failure]:* Can't seem to definitively config PG to a specific version
of python - v3.1, at /usr/local/bin/python3
*[Results]:* configure seems to pick up python 2.4 configuration, but
apparently links to (desired) python 3.1 libs.
# ldd plpython2.so
libpython2.4.so.1.0 => /usr/lib/libpython2.4.so.1.0
*[Comments]:* Tried first to see if configure picks up the PYTHONPATH
env variable to find python's configuration. No joy. Using this variable
might be a reasonable approach for configure?