A recipe to build gcc-2.95.2 on Sequent Dynix-4.4.2

[Andrew Gaylard <andrew dot gaylard at za dot didata dot com>]

Hi all,

Having spent several days getting gcc-2.95.2 to build on 
Dynix-4.4.2, I thought I'd share how I got it to work.

This isn't a simple procedure.  There's probably a simpler way,
but I can say for sure that this worked for me.

-- 
Andrew Gaylard
andrew.gaylard @ za . didata . com
-----------------------------------------------------------------
Getting gcc-2.95.2 to build on Sequent Dynix 4.4.2


[ 'root' access is only needed to do the 'make install' parts of
this process.  If you want to run this whole procedure as a
non-root user, add "--prefix=/your/home/dir/gnu" (or some
directory to which you have write access) to each ./configure ]

0/
Build and install GNU make:

   gzip -dc make-3.78.1.tar.gz | tar xvf -
   cd make-3.78.1
   ./configure ; make ; make install
   cd ..

1/
Build and install GNU sed:

   gzip -dc sed-3.02.tar.gz | tar xvf -
   cd sed-3.02
   ./configure ; make ; make install
   cd ..

2/
Build and install GNU bison:

   gzip -dc bison-1.27.tar.gz | tar xvf -
   cd bison-1.27
   ./configure ; make ; make install
   cd ..

3/
Build and install GNU flex:

   gzip -dc flex-2.5.4a.tar.gz | tar xvf -
   cd flex-2.5.4
   ./configure ; make ; make install
   cd ..

4/
Build and install GNU binutils:

   gzip -dc binutils-2.9.1.tar.gz
   cd binutils-2.9.1
   ./configure ; make ; make install
   cd ..

Rename GNU 'as' since gcc is expecting Sequent's 'as':

   mv /usr/local/bin/as /usr/local/bin/gas
   mv /usr/local/i386-sequent-sysv4/bin/as \
   /usr/local/i386-sequent-sysv4/bin/gas

I tried using Dynix's /bin/ld, but it had problems with "duplicate
symbols" in code generated by g++.  GNU ld didn't have this
problem.

5/
Build and install gcc-2.8.1 (I didn't trust Dynix's /bin/cc to
build gcc-2.95.2, but it might be OK):

   gzip -dc gcc-2.8.1.tar.gz | tar xvf -
   cd gcc-2.8.1
   ./configure --prefix=/opt/gcc-2.8.1
   make bootstrap
   make install
   cd ..

It is necessary to use a different prefix from /usr/local to be
sure that *this* gcc is used to build gcc-2.95.2.

6/
Extract gcc-2.95.2:
   
   gzip -dc gcc-2.95.2.tar.gz | tar xvf -

7/
Apply this patch for the bug in Dynix-4.4.2's bcopy function; it
can't handle overlapping memory areas.  (My thanks to
rfg@monkeys.com for this.)

cat >bcopy-fix.patch <<EOF
diff -c gcc-2.95.2/gcc/cp/class.c gcc-2.95.2/gcc/cp/class.c.orig 
*** gcc-2.95.2/gcc/cp/class.c Mon Jun 19 14:37:20 2000
--- gcc-2.95.2/gcc/cp/class.c.orig Sat Aug  7 03:31:51 1999
***************
*** 1226,1233 ****
                  /* We know the last slot in the vector is empty
                     because we know that at this point there's room
                     for a new function.  */
!                 memmove ((PTR) &TREE_VEC_ELT (method_vec, slot + 1),
!                        (PTR) &TREE_VEC_ELT (method_vec, slot),
                         (len - slot - 1) * sizeof (tree));
                  TREE_VEC_ELT (method_vec, slot) = NULL_TREE;
                }
--- 1226,1233 ----
                  /* We know the last slot in the vector is empty
                     because we know that at this point there's room
                     for a new function.  */
!                 bcopy ((PTR) &TREE_VEC_ELT (method_vec, slot),
!                        (PTR) &TREE_VEC_ELT (method_vec, slot + 1),
                         (len - slot - 1) * sizeof (tree));
                  TREE_VEC_ELT (method_vec, slot) = NULL_TREE;
                }
EOF

Apply this patch to get around the sys_siglist issue.  Note that
this ugly hack is my own tweak. A better solution than this has
been introduced into the gcc sources since January 2000, but these
later snapshots refused to build (I tested 20000612 and 20000131);
they both died building with the stage1 compiler with a signal 11.

cat >sys_siglist-fix.patch <<EOF
diff -c gcc-2.95.2/gcc/collect2.c gcc-2.95.2/gcc/collect2.c.orig
*** gcc-2.95.2/gcc/collect2.c Mon Jun 19 14:35:48 2000
--- gcc-2.95.2/gcc/collect2.c.orig Tue Oct 12 23:16:52 1999
***************
*** 355,368 ****
  #else
    if (s >= 0 && s < NSIG)
      {
! /* # ifdef NO_SYS_SIGLIST */
        static char buffer[30];
  
        
        sprintf (buffer, "Unknown signal %d", s);
        return buffer;
! /* # else
        return sys_siglist[s];
! # endif */
      }
    else
      return NULL;
--- 355,368 ----
  #else
    if (s >= 0 && s < NSIG)
      {
! # ifdef NO_SYS_SIGLIST
        static char buffer[30];
  
        sprintf (buffer, "Unknown signal %d", s);
        return buffer;
! # else
        return sys_siglist[s];
! # endif
      }
    else
      return NULL;
EOF

   patch -p0 <bcopy-fix.patch
   patch -p0 <sys_siglist-fix.patch

8/
Build and install gcc-2.95.2.  First, ensure that the gcc-2.8.1
and ld-2.9.1 are first in your PATH:

   PATH=/opt/gcc-2.8.1/bin:/usr/local/bin:$PATH
   export PATH
   # gcc --version
   2.8.1
   # ld --version
   GNU ld 2.9.1
   Copyright 1997 Free Software Foundation, Inc.
   This program is free software; you may redistribute it under
   the terms of
   the GNU General Public License.  This program has absolutely no
   warranty.
     Supported emulations:
      elf_i386

Finally, configure, build and install:

   cd gcc-2.95.2
   mkdir obj-sequent
   cd obj-sequent
   ../configure --with-gnu-ld --enable-languages=c,c++
   make bootstrap
   make install
   cd ..


That's it -- I don't think I've forgotten anything. I hope not.