bootstrap/5485: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

bootstrap/5485: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

[rbrown64]

>Number:         5485
>Category:       bootstrap
>Synopsis:       Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          doc-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 24 20:16:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Rodney Brown
>Release:        gcc-3.1 20020121
>Organization:
>Environment:
sparcv9-sun-solaris2.8
>Description:
For sparc{v9,64}-sun-solaris2.[78] and maybe hppa64-hp-hpux11*
the 64-bit compiler will need to be installed with a different
--exec-prefix or --prefix from the 32-bit compiler (I think).
For the sparc at least this also requires a binutils build configured for the 64-bit environment.

On the sparc, the bootstrap using a 32-bit compiler fails attempting to link genflags with the stage1 compiler, since
libiberty was built with the 32-bit compiler.
Rebuilding libiberty with the stage1 compiler lets the bootstrap proceed.

In general, could gcc/doc/install.texi be updated with the 
recommended procedure for building a 64-bit compiler using
an existing 32-bit gcc version and link to that from the
new sparc{v9,64}-sun-solaris2.[78] and hppa64-hp-hpux11.*
specific target entries.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: bootstrap/5485: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

[davem]

Synopsis: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

State-Changed-From-To: feedback->closed
State-Changed-By: davem
State-Changed-When: Tue Jun 25 12:39:45 2002
State-Changed-Why:
    In feedback for 5 months with no response, closing...

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5485

Re: bootstrap/5485: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

[rodrigc]

Synopsis: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

State-Changed-From-To: open->feedback
State-Changed-By: rodrigc
State-Changed-When: Sun Jan 27 14:57:03 2002
State-Changed-Why:
    Can you submit a patch to invoke.texi which has
    the correct bootstrap instuctions for 64-bit sparc/hppa?

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5485