[IMP-dev] Minimum SWIG version increased to 1.3.34

[Ben Webb <>]

I've increased the minimum version of SWIG required to build IMP to
1.3.34 (it was 1.3.31 before). This is needed because the infrastructure
to handle reference counting properly was only added to SWIG in 1.3.34.

All of the lab machines run SWIG 1.3.36, so you shouldn't notice any
difference. If, however, you're building IMP on a non-lab machine, you
may need to upgrade your version of SWIG.

For example, Macs running 10.5 ship with SWIG 1.3.31, so you'll need to
install a newer version, either with Fink or MacPorts, or by compiling
it yourself. If you install the MacPorts version, you'll need to add
path='/opt/local/bin'
to your config.py in order for scons to pick up your newer SWIG rather
than Apple's copy in /usr/bin/. To compile from source just download
swig-1.3.36.tar.gz, extract it, then run "./configure
--prefix=/usr/local && make && sudo make install" or similar. (The
advantage of building from source yourself is that the MacPorts package
takes forever to build because it seems to have a lot of
not-really-necessary dependencies; the disadvantage of course is that
the resulting installation is not controlled by a package system.)

The actual fix to get the IMP Python wrappers to use this functionality
to do reference counting properly will follow once we have ironed out
any problems that crop up with the newer SWIG (if any) and I have had a
chance to adequately test the new code.

	Ben
-- 
                      http://salilab.org/~ben/
"It is a capital mistake to theorize before one has data."
	- Sir Arthur Conan Doyle