Difference between revisions of "Building 32-bit packages on a 64-bit system"

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(Created page with "==Build 32-bit packages in a 64-bit environment== This example uses mkarchroot to create the chroot environment. First, create /opt/arch32 or another directory of your choice. Th...")
 
(Build 32-bit packages in a 64-bit environment)
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'''Edit your /opt/arch32/pacman.conf'''
 
'''Edit your /opt/arch32/pacman.conf'''
 
  Change Architecture = auto to Architecture = i686
 
  Change Architecture = auto to Architecture = i686
 +
 +
'''Note:'''
 +
''Thanks to Remy Oudompheng to pointing this out''
 +
devtools (version 0.9.10 in [testing]) contains a ready-to-use /usr/share/devtools/makepkg-i686.conf.
 +
If you decide to use this conf file, you can skip the next step "Edit /opt/arch32/makepkg.conf"
 +
but you will need to copy /usr/share/devtools/makepkg-i686.conf to /opt/arch32/makepkg.conf
  
 
'''Edit /opt/arch32/makepkg.conf'''
 
'''Edit /opt/arch32/makepkg.conf'''

Revision as of 20:40, 8 September 2010

Build 32-bit packages in a 64-bit environment

This example uses mkarchroot to create the chroot environment. First, create /opt/arch32 or another directory of your choice. The next steps is to copy your existing pacman.conf and makepkg.conf file to /opt/arch32 or your chosen directory. In the following tutorial, substitute /opt/arch32 with your chosen directory if you decide to use a different directory.

Note If you have customized either makepkg.conf or pacman.conf, then you will need to use the standard pacman.conf and makepkg.conf files. Also make sure your /etc/pacman.d/mirrorlist contains the $arch variable instead of x86_64 or i686

Edit your /opt/arch32/pacman.conf

Change Architecture = auto to Architecture = i686

Note:

Thanks to Remy Oudompheng to pointing this out
devtools (version 0.9.10 in [testing]) contains a ready-to-use /usr/share/devtools/makepkg-i686.conf. 
If you decide to use this conf file, you can skip the next step "Edit /opt/arch32/makepkg.conf" 
but you will need to copy /usr/share/devtools/makepkg-i686.conf to /opt/arch32/makepkg.conf

Edit /opt/arch32/makepkg.conf

Change CARCH="x86_64" to CARCH="i686"
CHOST="x86_64-unknown-linux-gnu" to CHOST="i686-unknown-linux-gnu".
CFLAGS="-march=x86_64 -mtune=generic -O2 -pipe" to CFLAGS="-march=i686 -mtune=generic -O2 -pipe" .
CXXFLAGS="-march=x86_64 -mtune=generic -O2 -pipe" to CXXFLAGS="-march=i686 -mtune=generic -O2 -pipe" .

After the changes have been made, you will need to create another directory, I created /aur as mine.

Next run:

sudo mkarchroot -C /opt/arch32/pacman.conf -M /opt/arch32/makepkg.conf <chrootdir>/root base base-devel sudo 

If you create the /aur directory like mine you would run

sudo mkarchroot -C /opt/arch32/pacman.conf -M /opt/arch32/makepkg.conf /aur/root base base-devel sudo

You will need to edit /aur/copy/etc/pacman.d/mirrorlist and select which mirrors to use.

Now you can use makechrootpkg to build i686 packages