Lars, lib/Makefile.am contains some compiled python files:
lyx2lyx_DATA = \ lyx2lyx/error.pyc \ lyx2lyx/lyx2lyx \ lyx2lyx/parser_tools.pyc \ lyx2lyx/lyx_1_4.pyc \ lyx2lyx/parser_tools.py \ lyx2lyx/lyxconvert_221.pyc \ lyx2lyx/lyxconvert_223.pyc \ lyx2lyx/lyxconvert_224.pyc \ lyx2lyx/lyx_0_12.py \ lyx2lyx/lyx_1_0_0.py \ lyx2lyx/lyx_1_0_1.py \ lyx2lyx/lyx_1_1_4.py \ lyx2lyx/lyx_1_1_5.py \ lyx2lyx/lyx_1_1_6.py \ lyx2lyx/lyx_1_1_6fix3.py \ lyx2lyx/lyx_1_2.py \ lyx2lyx/lyx_1_3.py \ lyx2lyx/lyx_1_4.py If they are not there, make complains (with builddir != srcdir). If they should be installed, then certainly all of them and not the old lyxconvert_* files, but I don't know how to do that. Georg