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Hello, everyone. |
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Here's the first draft of news item for gx86-multilib. I tried to cover |
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all the important aspects. Please review and let me know what you think. |
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Title: True multilib support on amd64 |
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Author: Michał Górny <mgorny@g.o> |
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Content-Type: text/plain |
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Posted: 2015-01-28 |
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Revision: 1 |
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News-Item-Format: 1.0 |
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Display-If-Keyword: amd64 |
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Display-If-Keyword: ~amd64 |
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Starting with 2015-03-29, we are enabling the true multilib support |
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on amd64 and masking the old emul-linux-x86 package sets for removal. |
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This change provides our users with the opportunity to build 32-bit |
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libraries from source with all the flexibility given by ebuilds, rather |
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than relying on pre-packaged binary versions of them. |
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The switch to the new system is likely to require a specific action from |
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the users of our multilib profiles. Since the new system collides with |
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the old one, the Package Manager must be able to clearly satisfy all |
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the dependencies using the new system in order to proceed. This may |
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require unmerging packages installed from third-party repositories that |
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have not been updated to support the new system. |
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In order to enable building necessary 32-bit libraries, users will be |
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required to enable the abi_x86_32 USE flag on respective packages. |
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In most of the cases, Portage will be able to deliver correct |
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suggestions for that when using the --autounmask feature. However, some |
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users may prefer setting ABI_X86 globally to enable 32-bit libraries |
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in all packages supporting building them. |
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In case of issues, blockers especially, the users users are recommended |
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to manually uninstall any emul-linux-x86 packages that may have been |
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installed on their systems. This will aid the Package Manager |
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in choosing the correct dependency resolution path. If using Portage, |
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this can be done using the following command: |
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$ emerge -C 'app-emulation/emul-linux-x86*' |
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Note that after performing this step, 32-bit applications on your system |
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may become temporarily broken. Therefore, this step should be followed |
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by a @world upgrade immediately. |
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-- |
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Best regards, |
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Michał Górny |
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