Skip Menu |
 

Download (untitled) / with headers
text/plain 4.5KiB
From krb5-bugs-incoming-bounces@PCH.mit.edu Mon Feb 22 11:14:24 2010
Return-Path: <krb5-bugs-incoming-bounces@PCH.mit.edu>
Received: from pch.mit.edu (PCH.MIT.EDU [18.7.21.90])
by krbdev.mit.edu (Postfix) with ESMTP id 4EAAE3F0EA;
Mon, 22 Feb 2010 11:14:24 -0500 (EST)
Received: from pch.mit.edu (pch.mit.edu [127.0.0.1])
by pch.mit.edu (8.13.6/8.12.8) with ESMTP id o1MGEOgn013520;
Mon, 22 Feb 2010 11:14:24 -0500
Received: from mailhub-dmz-4.mit.edu (MAILHUB-DMZ-4.MIT.EDU [18.7.62.38])
by pch.mit.edu (8.13.6/8.12.8) with ESMTP id o1KNQY71028257
for <krb5-bugs-incoming@PCH.mit.edu>; Sat, 20 Feb 2010 18:26:35 -0500
Received: from dmz-mailsec-scanner-2.mit.edu (DMZ-MAILSEC-SCANNER-2.MIT.EDU
[18.9.25.13])
by mailhub-dmz-4.mit.edu (8.13.8/8.9.2) with ESMTP id o1KNQYDk015738
for <krb5-bugs@mit.edu>; Sat, 20 Feb 2010 18:26:34 -0500
X-AuditID: 1209190d-b7cf8ae00000096b-56-4b806faa7fe1
Received: from vhost2.lga6.us.voxel.net (vhost2.lga6.us.voxel.net
[72.251.193.170])
by dmz-mailsec-scanner-2.mit.edu (Symantec Brightmail Gateway) with
SMTP id 54.CE.02411.AAF608B4; Sat, 20 Feb 2010 18:26:34 -0500 (EST)
Received: (qmail 29230 invoked by uid 108); 20 Feb 2010 18:26:34 -0500
Received: from unknown (HELO imp.local) (mike@flyn.org@72.146.12.149)
by vhost2.lga6.us.voxel.net with AES256-SHA encrypted SMTP;
20 Feb 2010 18:26:34 -0500
Received: by imp.local (Postfix, from userid 1101)
id AE3F63B; Sat, 20 Feb 2010 17:58:57 -0500 (EST)
To: krb5-bugs@mit.edu
Subject:
From: mike@flyn.org
X-send-pr-version: 3.99
Message-Id: <20100220225857.AE3F63B@imp.local>
Date: Sat, 20 Feb 2010 17:58:57 -0500 (EST)
X-Brightmail-Tracker: AAAAAxLvamcS8ELgEvBWdw==
X-Mailman-Approved-At: Mon, 22 Feb 2010 11:14:22 -0500
X-BeenThere: krb5-bugs-incoming@mailman.mit.edu
X-Mailman-Version: 2.1.6
Precedence: list
Reply-To: mike@flyn.org
Sender: krb5-bugs-incoming-bounces@PCH.mit.edu
Errors-To: krb5-bugs-incoming-bounces@PCH.mit.edu


Show quoted text
>Submitter-Id: net
>Originator: W. Michael Petullo
>Organization: The Oakbud Company
>Confidential: no
>Synopsis: Problem with krb5 libcom_err vs. system libcom_err
>Severity: serious
>Priority: low
>Category: krb5-build
>Class: sw-bug
>Release: 1.7
>Environment:
System: OpenWRT Linux-based cross-compile environment
Architecture: MIPS32

Show quoted text
>Description:
I am building krb5 within OpenWRT, a Linux/GCC-based cross-compile
environment that targets embedded systems. I have found a problem in
krb5's build system with regard to libcom_err. In my build environment,
there exists both libcom_err.so.3 (in the krb5 tree) and libcom_err.so.2
(installed in the build system library directory). I want to use krb5's
libcom_err.so.3. In fact, libcom_err.so.2 is merely a side affect of
building another package and is not ever installed on the target device.

The makefile for krb5kdc is fine. It contains the following rule:

CC_LINK=$(CC) $(PROG_LIBPATH) $(PROG_RPATH_FLAGS) $(CFLAGS) $(LDFLAGS)

This means that the linker finds libcom_err.so.3 first (-L../lib before
-L/BUILD/SYSTEM/LIBS)

However, the makefiles for the libraries (for example, libkadm5clnt.so)
are broken:

MAKE_SHLIB_COMMAND=$(CC) -shared -fPIC -Wl,-h,$(LIBPREFIX)$(LIBBASE)$(SHLIBSEXT),--no-undefined $(LDFLAGS) -o $@ $$objlist $(SHLIB_EXPFLAGS) -Wl,--version-script binutils.versions && $(PERL) -w $(SRCTOP)/util/export-check.pl $(SHLIB_EXPORT_FILE) $@

Here, $(LDFLAGS) is before $(SHLIB_EXPFLAGS). The result is the
-L/BUILD/SYSTEM/LIBS is before -L../../../lib and the libraries link
against libcom_err.so.2.
Show quoted text
>How-To-Repeat:
Set LDCONFIG to point to a directory with libcom_err and build krb5.

Show quoted text
>Fix:
diff -u --recursive krb5-1.7-vanilla/src/config/shlib.conf krb5-1.7/src/config/shlib.conf
--- krb5-1.7-vanilla/src/config/shlib.conf 2008-12-08 17:33:07.000000000 -0500
+++ krb5-1.7/src/config/shlib.conf 2010-01-15 22:04:16.345151448 -0500
@@ -409,9 +409,9 @@
SHLIBEXT=.so
# Linux ld doesn't default to stuffing the SONAME field...
# Use objdump -x to examine the fields of the library
- LDCOMBINE='$(CC) -shared -fPIC -Wl,-h,$(LIBPREFIX)$(LIBBASE)$(SHLIBSEXT),--no-undefined $(LDFLAGS)'
+ LDCOMBINE='$(CC) -shared -fPIC -Wl,-h,$(LIBPREFIX)$(LIBBASE)$(SHLIBSEXT),--no-undefined'
#
- LDCOMBINE_TAIL='-Wl,--version-script binutils.versions && $(PERL) -w $(SRCTOP)/util/export-check.pl $(SHLIB_EXPORT_FILE) $@'
+ LDCOMBINE_TAIL='-Wl,--version-script binutils.versions $(LDFLAGS) && $(PERL) -w $(SRCTOP)/util/export-check.pl $(SHLIB_EXPORT_FILE) $@'
SHLIB_EXPORT_FILE_DEP=binutils.versions
# For cases where we do have dependencies on other libraries
# built in this tree...
This problem was previousl reported (#6643) and was already fixed for 1.8.