I'm seeing a strange situation on one of my i386-current systems,
which affects some package builds.  It's so far occured during the
build of mozilla and rpm, and I'll give an example from the latter:

gmake[1]: Entering directory `/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/misc'
cc -I/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4 -I/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4 -O2 -pipe -I/usr/local/include  -DHAVE_CONFIG_H -I/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/lib -I/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/misc   -I/usr/local/include  -c -o getmntent.o getmntent.c
In file included from getmntent.c:1:
miscfn.h:4: config.h: No such file or directory
gmake[1]: *** [getmntent.o] Error 1
gmake[1]: Leaving directory `/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/misc'

It's not finding config.h, but look:

athene# ls -l /usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/config.h
-rw-r--r--  1 root  wheel  4485 Dec 13 08:39 /usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4/config.h

Note the "-I/usr/local/pkgsrc/misc/rpm/work/rpm-2.5.4" in the command
line.  In fact, if I chdir to the directory and run the cc command
manually, just the way it's output by gmake above, it works -- the
compile completes without error.

Any ideas?

-tih
-- 
Tom Ivar Helbekkmo, Senior System Administrator, EUnet Norway
www.eunet.no  T: +47-22092958 M: +47-93013940 F: +47-22092901