> I have managed to get my system into a state where make simply refuses
> to build anything at all.  Most of the time it won't find source files
> that are in the same directory, or /usr/include, even though they
> exist.

When I got into this state I had no ld.so but a working one in the compile
directory. Copied that in place, as well as all other ld stuff. Then in
/usr/src/usr.bin/make the new make was not functional, removing it and 
relinking by hand (cc -o make *.o) did the trick. Copied that make in place
as well. After fiddling around a while I found at least install and cpp
being broken as well, cpp in non-obvious ways, processing most files correctly
but for instance main.c in /usr/src/usr.bin/make ended up empty, so cc 
complained about missing _main entry point.

I fixed all that in panic mode and am not sure if these were all main
gotchas, but I succeeded in getting the machine full up again in less then
6 hours - and now am waiting to downgrade libc again...


Martin