bootstrap/3216: buildir == srcdir setup fails at make install time

[jason-gccbug@molenda.com]

>Number:         3216
>Category:       bootstrap
>Synopsis:       buildir == srcdir setup fails at make install time
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 18 00:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Jason Molenda
>Release:        gcc-3.0
>Organization:
>Environment:
i686-pc-linux-gnu, RH 7.1, host==build==target.
>Description:
This is may be similar to bootstrap/3075.  If you run

   ./configure
   make bootstrap
   make install

The 'make install' will fail in the runtime libraries directory
($srcdir/i686-pc-linux-gnu/DIRNAME in my case) when one of
the Makefiles tries to run mkinstalldirs as $src_topdir/../mkinstalldirs
and mkinstalldirs is actually at $src_topdir/../../mkinstalldirs in
this case.

The problem is that a directory like 'libjava' exists as both
$srcdir/libjava and $srcdir/i686-pc-linux-gnu/libjava when someone
configures as I have.  The latter of these two is a set of symlinks
to the real sources.  The Makefile in libjava assumes that 
mkinstalldirs can be found at $src_topdir/../mkinstalldirs -- a
valid assumption for the first location, but not the second.
When someone configures with srcdir != builddir, $src_topdir is
probably a full pathname, and so mkinstalldirs is found in
both cases.  But when srcdir==builddir, $src_topdir is ".",
and when make descends into i686-pc-linux-gnu/libjava, 
mkinstalldirs gets set to "./../mkinstalldirs", which is
incorrect.

My brain is too sleep deprived just now to provide a 
patch, I wanted to get the problem in the DB in a (hopefully
clear) report in case someone more familiar with this bit of
the build system wants to look into it.

This problem pops up in the following directories:

libjava/libltdl
libjava/gcj
libjava/include
libjava
zlib
boehm-gc

I'll attach the make output from one of the failed make
installs.
>How-To-Repeat:
Unpack gcc-3.0.  
./configure; make bootstrap; make install.
>Fix:
At first blush, I think this problem is in the same vein
as 3075, although that's a slightly different problem.
>Release-Note:
>Audit-Trail:
>Unformatted:
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