I've done a bit more testing.
The slowdown happens if I only modify 1 Makefile.am, and it seems to be
related to using SUBDIRS inside an AM_CONDITIONAL.
If I change the Makefile.am to use a non-SUBDIRS variable inside the
conditional autmake zips right along.
In fact, if I specify an as-yet non-existent directory to SUBDIRS I get a
warning message out of automake.
This surprised me - I thought I read that automake did not pay attention to
SUBDIRS and got its information from configure.{ac,in}.
Any ideas (while I go back to digging)?
H
