🚀 go-pugleaf

   I would like to install older versions of gcc (e.g. 1.40) in the same
directory hierarchy that the 2.0+ programs are arranged in so that we can
run them by doing "gcc -V 1.40 foo.c".  This seems to work just fine
(provided I rename some of the binaries) except that older versions of cpp
don't understand the -lang-c (and similar) arguments.  I tried writing a
specs file to turn this off but I clearly don't understand what I'm doing
or it doesn't work at all, because I haven't figured out a way to do this.

   Does anyone have any advice?  I tried simply subsituting cpp 2.1 in
place of 1.40, but I got complaints like

        foo.c:30: #-lines for entering and leaving files don't match

from cc1 (1.41)