xforms as supplied with Powertools breaks compilation of LyX.
It seems to include something it shouldn't, leading to errors such as:
In file included from formula.C:30:
../../src/minibuffer.h:17: using directive 'Object' introduced
ambiguous type '_ObjectRec *'
make: *** [formula.lo] Error 1
I managed to get the compilation working by using an older RPM of xforms,
It's fixed in xforms-0.88-16.
Note: we don't have xforms in 7.1, because it's not GPL. You could download the