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I'm trying to compile multiarch project the right (means reproducible) way, so I decided to install all libraries through apt-get. But ever since the system noticed what I'm doing, it became hostile. While many people claim that you can install 32bit OpenSSL through this command:

apt-get install libssl-dev:i386

I ended up with this result:

E: Unable to locate package libssl-dev

I did apt-get update and my OS version is Debian GNU/Linux 8 (Jessie). Am I doing something wrong?

I tried to check what i386 libraries are actually available:

XXXXX@debianvirtualbox:~$ aptitude search i386
p   debian-installer-8-netboot-i386    - Debian-installer network boot images for i386                                
v   debian-installer-netboot-i386      -                  
p   installation-guide-i386            - Debian installation guide for i386                                          
p   installation-guide-kfreebsd-i386   - Debian installation guide for kFreeBSD i386                                  
i   libc6-dev-i386                     - GNU C Library: 32-bit development libraries for AMD64                       
i A libc6-i386                         - GNU C Library: 32-bit shared libraries for AMD64                                                 
v   qemu-system-i386                   -        
  • Can you install other i386 packages? – Thomas Weinbrenner Sep 29 '15 at 14:06
  • Only the basic std c++ libraries. I'll add aptitude search i386 results to the question. – Tomáš Zato Sep 29 '15 at 14:08
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I suspect that you don't have the i386 architecture enabled.

dpkg --add-architecture i386
apt-get update
apt-get install libssl-dev:i386

For more see the Multiarch HOWTO

  • Ahh. Thanks. And can I trust this to deal with everything correctly, avoiding name conflicts? It would be really great if I could install other libraries (like boost) that way too. – Tomáš Zato Sep 29 '15 at 14:17
  • You should be able to install all i386 packages alongside their amd64 versions. – Thomas Weinbrenner Sep 29 '15 at 14:19
  • @ThomasWeinbrenner, not all.. the package has to be built with multiarch support. Not all packages have been updated for this, and not all can be. – psusi Sep 29 '15 at 14:36
  • I just ended up with linker errors saying it cannot find some libraries that I've just installed. Is there something else I should be doing? – Tomáš Zato Sep 29 '15 at 14:50

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