[SOLVED] 32 bit program (xsane) looking for 64 bit library on multilib system

phenixia2003 · 01-08-2015, 03:52 AM

Hello,

On my side, I can't reproduce the issue with 32-bit xsane looking for 64-bit libraries. However, there's an issue in /usr/bin/update-gdk-pixbuf-loaders which prevents gdk-pixbuf 32-bit cache updates.

For instance, running update-gdk-pixbuf-loaders on a slackware multilib updates the 64-bit cache but not the 32-bit :

Code:

$ /usr/bin/update-gdk-pixbuf-loaders --verbose
Updating gdk-pixbuf.loaders for x86_64-slackware-linux:
  /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache

while /usr/bin/update-pango-querymodules updates the 64 and 32-bit pango modules :

Code:

$ /usr/bin/update-pango-querymodules  --verbose
Updating pango.modules for x86_64-slackware-linux:
  /usr/bin/pango-querymodules-64 \
  > /etc/pango/x86_64-slackware-linux/pango.modules
Updating pango.modules for i486-slackware-linux:
  /usr/bin/pango-querymodules-32 \
  > /etc/pango/i486-slackware-linux/pango.modules

The problems is at line #23 in /usr/bin/update-gdk-pixbuf-loaders :

Code:

  21  /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
  22   # Check for x86_64 multilib:
->23   if ls -d /etc/gtk-2.0/i?86* 1> /dev/null 2> /dev/null ; then
  24     for d in $(ls -d /etc/pango/i?86*); do
  25       mlhost=$(basename $d)
  26       break
  27     done

There's no /etc/gtk-2.0/i?86* directory on slackware multilib since 14.1. Therefore, the script assumes there's no multilib installed, and does not update the gdk-pixbuf 32-bit cache.

On the other hand, the directory /etc/pango/i?86* exists as it is part of the pango-compat32 package :

Code:

$ grep -iR "i486" /var/log/packages/pango-compat32-1.34.1-x86_64-1compat32 
etc/pango/i486-slackware-linux/
etc/pango/i486-slackware-linux/pango.modules

As a (temporary) workaround, I suggest to check for /etc/pango/i?86* instead of /etc/gtk-2.0/i?86*. Here is the patch for that :

Code:

--- /usr/bin/update-gdk-pixbuf-loaders.bak      2015-01-08 09:55:06.519179663 +0100
+++ /usr/bin/update-gdk-pixbuf-loaders  2015-01-08 09:55:24.293180456 +0100
@@ -20,7 +20,7 @@
      fi                                                                                                                                      
      /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
      # Check for x86_64 multilib:
-     if ls -d /etc/gtk-2.0/i?86* 1> /dev/null 2> /dev/null ; then
+     if ls -d /etc/pango/i?86* 1> /dev/null 2> /dev/null ; then
        for d in $(ls -d /etc/pango/i?86*); do
          mlhost=$(basename $d)
          break

Now, running update-gdk-pixbuf-loaders on a slackware multilib gives:

Code:

$ /usr/bin/update-gdk-pixbuf-loaders --verbose
Updating gdk-pixbuf.loaders for x86_64-slackware-linux:
  /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
Updating gdk-pixbuf.loaders for i486-slackware-linux:
  /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache

Hope this helps.

--
SeB

bassmadrigal · 01-08-2015, 07:26 AM

Quote:

Originally Posted by phenixia2003

As a (temporary) workaround, I suggest to check for /etc/pango/i?86* instead of /etc/gtk-2.0/i?86*. Here is the patch for that :

Code:

--- /usr/bin/update-gdk-pixbuf-loaders.bak      2015-01-08 09:55:06.519179663 +0100
+++ /usr/bin/update-gdk-pixbuf-loaders  2015-01-08 09:55:24.293180456 +0100
@@ -20,7 +20,7 @@
      fi                                                                                                                                      
      /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
      # Check for x86_64 multilib:
-     if ls -d /etc/gtk-2.0/i?86* 1> /dev/null 2> /dev/null ; then
+     if ls -d /etc/pango/i?86* 1> /dev/null 2> /dev/null ; then
        for d in $(ls -d /etc/pango/i?86*); do
          mlhost=$(basename $d)
          break

Now, running update-gdk-pixbuf-loaders on a slackware multilib gives:

Code:

$ /usr/bin/update-gdk-pixbuf-loaders --verbose
Updating gdk-pixbuf.loaders for x86_64-slackware-linux:
  /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
Updating gdk-pixbuf.loaders for i486-slackware-linux:
  /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache

Hope this helps.

--
SeB

Couldn't you do a check on whether /usr/bin/gdk-pixbuf-query-loaders-32 exists? That file only exists in the 32bit package and effectively keeps the check self-contained within that package rather than relying on another one. That way, determining multilib for gdk-pixbuf is not based on the user having a multilib setup containing pango (even though most users would have both installed since they'd likely use Eric's multilib packages).

phenixia2003 · 01-08-2015, 07:47 AM

Quote:

Originally Posted by bassmadrigal

Couldn't you do a check on whether /usr/bin/gdk-pixbuf-query-loaders-32 exists? That file only exists in the 32bit package and effectively keeps the check self-contained within that package rather than relying on another one. That way, determining multilib for gdk-pixbuf is not based on the user having a multilib setup containing pango (even though most users would have both installed since they'd likely use Eric's multilib packages).

sure :

Code:

--- /usr/bin/update-gdk-pixbuf-loaders.bak      2015-01-08 14:41:25.004142561 +0100
+++ /usr/bin/update-gdk-pixbuf-loaders  2015-01-08 14:45:06.497152444 +0100
@@ -20,18 +20,12 @@
      fi
      /usr/bin/gdk-pixbuf-query-loaders-64 --update-cache
      # Check for x86_64 multilib:
-     if ls -d /etc/gtk-2.0/i?86* 1> /dev/null 2> /dev/null ; then
-       for d in $(ls -d /etc/pango/i?86*); do
-         mlhost=$(basename $d)
-         break
-       done
-       if [ -x /usr/bin/gdk-pixbuf-query-loaders-32 ]; then
-         if [ "$1" = "--verbose" ]; then
-           echo "Updating gdk-pixbuf.loaders for ${mlhost}:"
-           echo "  /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache"
-         fi
-         /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache
+     if [ -x /usr/bin/gdk-pixbuf-query-loaders-32 ]; then
+       if [ "$1" = "--verbose" ]; then
+         echo "Updating gdk-pixbuf.loaders for 32-bit:"
+         echo "  /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache"
        fi
+       /usr/bin/gdk-pixbuf-query-loaders-32 --update-cache
      fi
    else
      if [ "$1" = "--verbose" ]; then

BCarey · 01-09-2015, 10:00 AM

SOLVED!!

Thank you phenixia so much for providing the solution. This has been haunting me for nearly a month.

Thank you also bassmadrigal and especially Richard Cranium for your persistent attempts to help me out with this.

Brian

Pscylo · 10-20-2015, 06:01 AM

Same issue noticed with acrobat reader - fixed using same instructions - felt the need to express thanks.

All the best.