libisoburn fails to build on powerpc

Bug #1571684 reported by Matthias Klose on 2016-04-18
This bug affects 1 person
Affects Status Importance Assigned to Milestone
glibc (Ubuntu)
libisoburn (Ubuntu)

Bug Description

(gdb) run
Starting program: /home/doko/tmp/libisoburn-1.4.2/xorriso/.libs/xorriso -no_rc -version
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/powerpc-linux-gnu/".
xorriso 1.4.2 : RockRidge filesystem manipulator, libburnia project.

xorriso 1.4.2
ISO 9660 Rock Ridge filesystem manipulator and CD/DVD/BD burn program
Copyright (C) 2015, Thomas Schmitt <email address hidden>, libburnia project.
xorriso version : 1.4.2
Version timestamp : 2015.11.28.140001
Build timestamp : -none-given-
libisofs in use : 1.4.2 (min. 1.4.2)
libjte in use : 1.0.0 (min. 1.0.0)
libburn in use : 1.4.2 (min. 1.4.2)
libburn OS adapter: internal GNU/Linux SG_IO adapter sg-linux
libisoburn in use : 1.4.2 (min. 1.4.2)
Provided under GNU GPL version 3 or later, due to libreadline license.
There is NO WARRANTY, to the extent permitted by law.

Program received signal SIGSEGV, Segmentation fault.
__GI__IO_wsetb (f=f@entry=0x1feccca0 <_IO_stdout_>, b=b@entry=0x0, eb=eb@entry=0x0, a=a@entry=0) at wgenops.c:105
105 wgenops.c: No such file or directory.

Matthias Klose (doko) wrote :

even the version 1.4.2-3 in the archive fails this way

Launchpad Janitor (janitor) wrote :

This bug was fixed in the package libisoburn - 1.4.2-4ubuntu1

libisoburn (1.4.2-4ubuntu1) xenial; urgency=medium

  * Don't call libtool with the --silent option.
  * debian/patches/0001-build-system.patch: do not pass a version script when
    building executables; this is meant for libraries, and its use appears to
    be breaking the build on powerpc (probably due to a toolchain regression).
    LP: #1571684.

 -- Matthias Klose <email address hidden> Mon, 18 Apr 2016 17:10:28 +0200

Changed in libisoburn (Ubuntu):
status: Confirmed → Fix Released
Thomas Schmitt (scdbackup) wrote :


i downloaded libisoburn_1.4.2-4ubuntu1.debian.tar.xz and now look
at debian/patches/build-system.patch .


What is the motivation for removing "--silent" from libtool ?


Is it really correct to leave the experiment

     LDFLAGS="$LDFLAGS -Wl,--version-script=libisoburn/libisoburn.ver"
     AC_TRY_LINK([#include <stdio.h>], [printf("Hello\n");],
                 [vers_libs_test="yes"], [vers_libs_test="no"])

based on production of a binary rather than a shared library ?
(Not that i already knew how to test for library link success.)


Why did the minimal test run of xorriso succeed on Debian buildd
about 6 weeks ago ?

Older toolchain ?


The same gesture about --version-script is in libburn/acinclude.m4 .

The binary cdrskin is in about the same relation to libburn, as
xorriso is to libisoburn.


Have a nice day :)


Thomas Schmitt (scdbackup) wrote :

Looks like you found a solution for
on Fedora s390.

By running

  ./configure --disable-versioned-libs

i could keep the tests in libisoburn-1.4.2/releng/auto_isocontent
from crashing at the end of the xorriso runs.

Matthias Klose (doko) wrote :

> What is the motivation for removing "--silent" from libtool ?

what is the motivation to keep it? ;) I don't care, I'd like to see all available information in a build log instead of having to find out how to enable a verbose build when I'm looking at build failures.

I don't understand your second question. The question here is, why do executables need to be linked with --version-script at all? Of course glibc should correctly execute these.

no longer affects: xorriso
Matthias Klose (doko) wrote :

and yes, this happened after updating glibc 2.21 to 2.23

Thomas Schmitt (scdbackup) wrote :

> what is the motivation to keep it? ;)

Inherited autotools code. I change it only if i see a reason.

> I don't understand your second question.

When i test whether the option is supported by the linker, i do
this by applying it to a non-library binary.
AC_TRY_LINK() creates a tiny C program and links it using $LDFLAGS.
If it fails, vers_libs_test becomes "no" and --version-script= will
not be used.

The question is, whether this test actually has to try linking a
tiny library.

> why do executables need to be linked with --version-script at all?

Of course they should not. I will adopt your change upstream.

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