[cctbxbb] Using cctbx as a C++ only library

Ralf Grosse-Kunstleve rwgrosse-kunstleve at lbl.gov
Sat Nov 26 04:58:28 PST 2011

Hi Martin,

* strip out everything python related (apart from maybe the build system)
> * strip out all modules (namespaces) that are unused by my code
> leaving a fairly bare-bones C++ library that is quick and easy to build.

We have the libtbx/configure.py --build-boost-python-extensions=False
option. I just tried this on my Mac laptop (4 cores + hyper-threading,
compiles with -j 8):

python $sources/cctbx_project/libtbx/configure.py iotbx

It finished in 100 seconds. The same command finishes in 37 seconds on a
64-core AMD running Linux. Are these times OK for your purposes?

We could streamline the cctbx module hierarchy for your needs to bring down
the times further, if necessary.

To reduce the size of the source code directories, you could probably have
some quick gains by removing certain top-level directories. I'm not sure it
is worth going into the directories below the top level. Networks are so
fast these days and disks so big, developer time (for writing and
maintaining the scripts to pick out just what you need) is usually the most
scarce resource.

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