🚀 go-pugleaf

I have attempted to build gcc 2.3.3 on a DECstation 5100/120. The make
itself went pretty smoothly, no errors or warnings at all. But when I
do I make install-fixincludes, I run into a snag. It does its thing
for awhile and seems to work fine but then somewhere in the middle it
starts to give errors like:

--------------------------
Checking header files
Fixing ./xmi/xmireg.h
Can't copy ./xmi/xmireg.h
chmod: can't access /usr/export/share/landau/local/lib/gcc-lib/mips-dec-ultrix4.
2/2.3.3/include/root/usr/sys/io/./xmi/xmireg.h: No such file or directory
sh: /usr/export/share/landau/local/lib/gcc-lib/mips-dec-ultrix4.2/2.3.3/include/
root/usr/sys/io/./xmi/xmireg.h.sed: cannot create
mv: cannot access /usr/export/share/landau/local/lib/gcc-lib/mips-dec-ultrix4.2/
2.3.3/include/root/usr/sys/io/./xmi/xmireg.h.sed
Fixing ./xmi/xmareg.h
Can't copy ./xmi/xmareg.h

---------------------------
Until it gets to:

Fixing ./ufs/ufs_inode.h

Where it seems to work fine again. I don't know why it doesn't like to
fix those include files in the middle. And I know I have space left on
the disk it's trying to do this on.

I have compiled several programs with it and they seem to work fine.
So I'm just left wondering whether someday this will come back to
haunt me. 

Also, I couldn't find a FAQ for gcc. Where is it kept?