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

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m (Build 32-bit packages in a 64-bit environment: sudo is part of base-devel, no need to install separately)
 
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[[Category:Arch64]]
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[[Category:Package development]]
 
==Build 32-bit packages in a 64-bit environment==
 
==Build 32-bit packages in a 64-bit environment==
{{Note|If you are using or plan to use either [[Install_bundled_32-bit_system_in_Arch64#arch32-light|Arch32 light]] or [[Install bundled 32-bit system in Arch64]] you will need to use a different directory other than /opt/arch32 since this tutorial will conflict with the directory chosen in the other articles.}}
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{{Note|{{pkg|devtools}} is needed. Because of circular dependencies, you may need to install {{pkg|arch-install-scripts}} at the same time.}}
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{{Note|If you are using or plan to use either [[Install bundled 32-bit system in Arch64]] you will need to use a different directory other than /opt/arch32 since this tutorial will conflict with the directory chosen in the other articles.}}
  
 
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.
 
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.
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'''Edit your /opt/arch32/pacman.conf'''
 
'''Edit your /opt/arch32/pacman.conf'''
Change Architecture = auto to Architecture = i686
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Change {{ic|1=Architecture = auto}} to {{ic|1=Architecture = i686}}.
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You will also need to comment out any multi-lib repos.
  
 
{{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.  You will need to copy /usr/share/devtools/makepkg-i686.conf to /opt/arch32/makepkg.conf if you decide to use devtools[from testing].}}
 
{{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.  You will need to copy /usr/share/devtools/makepkg-i686.conf to /opt/arch32/makepkg.conf if you decide to use devtools[from testing].}}
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'''Next run:'''
 
'''Next run:'''
  sudo mkarchroot -C /opt/arch32/pacman.conf -M /opt/arch32/makepkg.conf <chrootdir>/root base base-devel sudo
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  sudo mkarchroot -C /opt/arch32/pacman.conf -M /opt/arch32/makepkg.conf <chrootdir>/root base base-devel  
 
If you create the /aur directory like mine you would run  
 
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''
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  ''sudo mkarchroot -C /opt/arch32/pacman.conf -M /opt/arch32/makepkg.conf /aur/root base base-devel''
  
 
You will need to edit /aur/copy/etc/pacman.d/mirrorlist and select which mirrors to use.
 
You will need to edit /aur/copy/etc/pacman.d/mirrorlist and select which mirrors to use.

Latest revision as of 22:18, 5 August 2015

Build 32-bit packages in a 64-bit environment

Note: devtools is needed. Because of circular dependencies, you may need to install arch-install-scripts at the same time.
Note: If you are using or plan to use either Install bundled 32-bit system in Arch64 you will need to use a different directory other than /opt/arch32 since this tutorial will conflict with the directory chosen in the other articles.

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.

You will also need to comment out any multi-lib repos.

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. You will need to copy /usr/share/devtools/makepkg-i686.conf to /opt/arch32/makepkg.conf if you decide to use devtools[from testing].

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 

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

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 like this:

# makechrootpkg -r /aur/