Freecad builds fine with xerces-c instead of xerces-c2. I am uploading an NMU to the delayed queue. See attached diff. It was literally just changing the build dependency.
diff -Nru freecad-0.13.2935-dfsg/debian/changelog freecad-0.13.2935-dfsg/debian/changelog --- freecad-0.13.2935-dfsg/debian/changelog 2014-01-01 14:29:29.000000000 -0500 +++ freecad-0.13.2935-dfsg/debian/changelog 2014-01-15 12:19:45.000000000 -0500 @@ -1,3 +1,10 @@ +freecad (0.13.2935-dfsg-1.1) unstable; urgency=low + + * Non-maintainer upload. + * Update xerces build dependency to libxerces-c-dev. (Closes: #733072) + + -- Jay Berkenbilt <q...@debian.org> Wed, 15 Jan 2014 12:19:37 -0500 + freecad (0.13.2935-dfsg-1) unstable; urgency=medium * [824153f] Move python-collada and python-ply from Recommends to Depends. diff -Nru freecad-0.13.2935-dfsg/debian/control freecad-0.13.2935-dfsg/debian/control --- freecad-0.13.2935-dfsg/debian/control 2014-01-01 15:51:13.000000000 -0500 +++ freecad-0.13.2935-dfsg/debian/control 2014-01-15 12:19:49.000000000 -0500 @@ -43,7 +43,7 @@ libswscale-dev, libtool, libx11-dev, - libxerces-c2-dev, + libxerces-c-dev, libxext-dev, libxi-dev, libxmu-dev,