libtool/mail/sgi

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From: Janos Farkas <Janos.Farkas-nouce/priv-#UiTVSa/OAc8mBkHH9CeLgE.uMWK@lk9qw.mail.eon.ml.org>
To: Ian Lance Taylor <ian@cygnus.com>, gord@m-tech.ab.ca
Cc: bug-libtool@gnu.org, tiemann@cygnus.com
Subject: Re: Irix shared libraries
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	bug-libtool@gnu.org, tiemann@cygnus.com
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On 1998-03-29 at 19:34:01, Ian Lance Taylor wrote:
>    From: Gordon Matzigkeit <gord@m-tech.ab.ca>
>    Date: 29 Mar 1998 16:57:47 -0700
> 
>    Do you have access to the IRIX ld man pages?  I don't know why it's
>    complaining about `non-sgi' interface versions.  I was under the
>    impression that any colon-separated list of strings would do.
> 
> Here is the entire ld man page, but it does not appear particularly
> helpful.

I just realized I also have mortal access to an SGI system, and found
this in the dso.5 page, this looks more informative :)

   Versioning of Shared Objects.

   QUICK OVERVIEW

   For a shared object to be versioned
   the following needs to be done:

   * Version strings consist of 3 parts and a dot: The string "sgi",
     a decimal number (the major number), a dot, and a decimal number
     (the minor number).

   * Add the command -set_version sgi1.0 to the command to build
     the shared object (cc -shared, ld -shared, etc.).

   * Whenever you make a COMPATIBLE change update the minor version
     number (the one after the dot), and add the latest version string
     to colon-separated list of version strings, e.g., -set_version
     sgi1.0:sgi1.1:sgi1.3

   * Whenever you make an INCOMPATIBLE change, update the
     major version number.  Pass this as the version list, e.g.,
     -set_version sgi2.0.  Change the filename of the OLD shared object
     by adding a dot followed by the previous major number to the filename
     of the shared object.  DO NOT CHANGE the soname of the object.
     No change to the file contents are necessary or desirable.  Simply
     rename the file.

-- 
Janos - Don't worry, my address is real.  I'm just bored of spam.
From nobody Wed Oct 14 16:54:11 1998
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From: "Robert S. Maier" <rsm@math.arizona.edu>
To: bug-libtool@gnu.org
Subject: misc. libtool bugs
Phase-of-Moon: Waxing Gibbous (62% of Full)
Organization: Mathematics Department, University of Arizona
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Xref: trick.fig.org mail.libtool:1516

Through installing the plotutils package on several platforms, I've turned
up a few additional bugs in libtool-1.2.  Here they are...

1. The plotutils package uses libtool to link together a shared library,
`libplot'.  It also compiles several executables, each in its own
subdirectory, and links them with `libplot'.  It then runs tests on the
executables.  

By looking at the test output I figured out that the version of libplot
that gets linked with the executables is by default the previously
installed version (if any), rather than the one that that's just been
built.  This happens under IRIX 5.3 and 6.4, when compiling with both cc
and gcc.  Probably on other platforms as well.

I assume there's something wrong with LD_LIBRARY_PATH.  But the shell
scripts that libtool generates (i.e., the pseudo-executables) contain the
lines

    # Add our own library path to LD_LIBRARY_PATH
    LD_LIBRARY_PATH="$thisdir/../libplot/.libs:$LD_LIBRARY_PATH"

    # Some systems cannot cope with colon-terminated LD_LIBRARY_PATH
    LD_LIBRARY_PATH=`$echo "X$LD_LIBRARY_PATH" | $Xsed -e 's/:*$//'`

which certainly look right.

A workaround here is to do `rm -f /usr/local/lib/libplot.*' before
installing the package.  But that's a pretty drastic workaround.

2. At least on those IRIX platforms, there's something buggy about the
option "-set_version 1.1.2:0.0:1.0" that libtool-1.2 passes to ld.  If
I compile a version of my `graph' utility that is meant to be linked with
-lXm instead of -lXaw (the default), as well as -lplot, I get the following
when I go to its subdirectory and try to run it without installing it:

	cosmo$ echo 0 0 1 1 2 0 | graph -TX -C
		 4352:graph: rld: Warning: version search suppressed because object libplot.so in liblist has non-sgi interface version (1.0)
		 4352:graph: rld: Fatal Error: cannot map soname 'libplot.so' using any of the filenames /usr/local/lib/libplot.so:/lib/libplot.so:/usr/lib/libplot.so:/usr/local/ivtools/lib/SGI/libplot.so:/lib/cmplrs/cc/libplot.so:/usr/lib/cmplrs/cc/libplot.so: -- either the file does not exist or the file is not mappable (with reason indicated in previous msg)

Not sure what's going on here.  If I do a `make install', the installed
version of `graph' functions perfectly.  It's only the uninstalled one,
built specially to be linked with -lXm, that gives error messages about SGI
version numbering for -lplot.

--Robert

From nobody Wed Oct 14 17:10:58 1998
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Date: Tue, 29 Sep 1998 11:33:52 +1000 (EST)
From: Ben Elliston <bje@cygnus.com>
To: bug-libtool@gnu.org
cc: Michael Tiemann <tiemann@cygnus.com>
Subject: libtool patch (fwd)
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X-Gnus-Article-Number: 1   Mon Nov  2 17:20:30 1998

I didn't realise libtool was under active maintainership, so here is a
patch from Michael Tiemann.

Ben

---------- Forwarded message ----------
Date: Tue, 22 Sep 1998 08:14:25 -0700 (PDT)
From: Michael Tiemann <tiemann@cygnus.com>
To: bje@cygnus.com
Subject: libtool patch

Irix6 is really not an o32 system anymore...it's an n32 system (gcc
doesn't even support o32).  So you need to change all the
LD_LIBRARY_PATHs to LD_LIBRARYN32_PATH.

tiemann@holodeck$ cvs diff -c ltconfig
Index: ltconfig
===================================================================
RCS file: /cvs/cvsfiles/devo/libtool/ltconfig,v
retrieving revision 1.16
diff -c -r1.16 ltconfig
*** ltconfig	1998/07/07 20:22:52	1.16
--- ltconfig	1998/09/22 15:13:36
***************
*** 1328,1338 ****
    postinstall_cmds='chmod 555 $lib'
    ;;
  
! irix5* | irix6*)
    version_type=osf
    soname_spec='${libname}${release}.so'
    library_names_spec='${libname}${release}.so$versuffix $libname.so'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
  
  # No shared lib support for Linux oldld, aout, or coff.
--- 1328,1345 ----
    postinstall_cmds='chmod 555 $lib'
    ;;
  
! irix5*)
    version_type=osf
    soname_spec='${libname}${release}.so'
    library_names_spec='${libname}${release}.so$versuffix $libname.so'
    shlibpath_var=LD_LIBRARY_PATH
+   ;;
+ 
+ irix6*)
+   version_type=osf
+   soname_spec='${libname}${release}.so'
+   library_names_spec='${libname}${release}.so$versuffix $libname.so'
+   shlibpath_var=LD_LIBRARYN32_PATH
    ;;
  
  # No shared lib support for Linux oldld, aout, or coff.
tiemann@holodeck$