mrs@MS.SECS.CSUN.EDU (Mike Stump) (06/25/91)
This is the top of
pub/contrib/iv-3.0b-g++/iv-3.0b-g++-1.3.S@interviews.stanford.edu, and
the whole of pub/contrib/iv-3.0b-g++/README@interviews.stanford.edu.
Here are three sets of patches to help you get iv-3.0-beta working
with g++. I am using iv-3.0-beta and libg++1.39.0 and gcc-1.92m on a
sun4 SPARC to cross compile to a vax running Ultrix 4.1. (It is
faster that way!)
Also, I manual do a:
for i in *.c
do
mv $i ${i}c
done
in the IV source directories on demand. Also, I have "rcp -r"ed the
whole /usr/include over to my SPARC, and then "rcp -r"ed my gcc
fixincludes directory on top of my new directory, replacing any
unneeded system headers. The script below was then run in the new include
directory:
#!/bin/sh
while read i
do
echo "doing $i"
if [ -d "$i.bak" -o -f "$i.bak" ]; then
echo "$i: already exists" >&2
else
mv "$i" "$i.bak"
sed 's/\(#[ ]*include[ ]*["<]\)/\1BASE\//' <"$i.bak" >"$i"
if cmp -s "$i" "$i.bak"; then
rm -f "$i"
mv "$i.bak" "$i"
fi
rm -f "$i.bak"
fi
done
The final step was to provide a symbolic link in the gcc-include directory
from BASE to . as in ln -s . BASE. This hackery makes it impossible for a
system headerfile to escape back into the c++ include hierarchy. Also, this
way, you can have many cross compilers install on your system and the g++
header files from libg++ will choose not the files in /usr/include, but
whatever files it should!
Note, expr.c should be hand compiled without any optimization flags, as
gcc cannot compile it correctly on a sparc. Repeat by compiling:
unsigned ui;
main() {
return ui / 23;
}
on a sparc for a vax. Watch the core dump.
This file does not constitute a release, or a permanent migration
version of iv. In the future, I will provide ONLY diffs against
virgin sources.
What you get with these patches is:
ability to compile all of src/lib
ability to compile all of src/bin/alert
ability to compile all of src/bin/dclock
ability to compile most (all but 6 files) of src/bin/doc
ability to compile all of src/bin/ibuild
ability to compile all of src/bin/iclass
ability to compile all of src/bin/idraw
ability to compile all of src/bin/ifb
ability to compile all of src/bin/ifc
ability to compile all of src/bin/logo
ability to compile all of src/bin/mailbox
After patching, keep this file around, because when you get the next
one, you will need to UNDO these patches, or re-extract virgin
3.0-beta. Caution, I have not applyed all the fixes yet, I will do
this some time, feel free to apply them after (or before), but I won't
claim that there will not be any conflicts.
Note, these patches should now enable you to compile any interviews
programs you have. If you are a new user, these are not yet for you,
don't waste your time. The Unidraw library is know not to work on a vax.
The companion compiler is gcc-1.92m.tar.Z as it sits in
pub/contrib/iv-3.0b-g++@interviews.stanford.edu. If you are not
building on a SPARC for a vax, the compiler's directory will need to
be cleaned some. If you don't know how to build a GNU compiler, don't
expect things to be real smooth, or easy. The only config files that are
there are for a SPARC and a VAX, no other architectures are supported yet.
If you don't feel like patching, building and installing it,
don't bother trying to uses these diffs.
dclock, iclass, ifb, ifc, logo, mailbox all appear to work just fine.
alert did work, but now won't link, workaround, specify the LIBS
twice. ibuild, idraw and doc may not work perfectly yet. idraw does
work on a sparc though, I am told.
Here is my planning guide:
Phase One (Completed)
Get the source files turned into .o files a quickly as possible
If this means making weird changes to IV, so be it.
Phase Two (Completed)
Get things to link
Phase Three (In progress)
Verify that the a.out's work. Bug fix the compiler where necessary.
Bug fix IV where necessary. (This so far has not been the case, usually)
Workaround as necessary.
Phase Four (About to start)
Reduce the number of #ifdef __GNUC__ in the code, by way of compiler
enhancement, to an absolute minimum.
Phase Five (Accepting offers)
Write the missing library code for libg++ for those things (like doc)
that need it.
Phase Six
Verify that author released versions of software work as well as what I
have. If not, submit bug fixes and enhancements.
Send any mods, additions or problems to Mike Stump <mrs@csun.edu>.
The vax-include.diffs file is a short file containing diffs against
some standard headerfiles on ultrix that needed fixing.