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On Saturday 03 of April 2010 14:16:14 Fabian Groffen wrote: |
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> Shouldn't we fix that buildsystem then? Do you have an example of a |
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> package/buildsystem that does that? |
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"We" already do, the thing is that maybe we don't have to. |
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https://bugs.gentoo.org/show_bug.cgi?id=240323 |
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From top of my head: python having issues with sys-libs/db as well as some |
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packages with readline. |
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> > It would indeed. Now when I think about it, moving stuff to preserved |
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> > library dir could be just done - provided it's possible - along with |
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> > fixing/setting DT_RPATH's in reverse runtime dependencies. This way no |
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> > system-wide LIBRARY_PATH's would be necessary. |
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> > Is it possible? Mike? |
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> No, unless you somehow make sure you reserve space for this, by e.g. |
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> setting a bogus rpath entry at buildtime. If you want to go that route, |
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> you probably want to look at the Prefix' binutils-config wrapper that |
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> already calls the linker with added rpath arguments. Afterwards you can |
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> use chrpath to set it to the correct location. Will get messy with the |
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> vdb though, but if Portage's doing it, it can probably be dealt with. |
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Sounds messy indeed, what about hardened/SELinux/AppArmor/whatever - do they |
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allow such DT_RPATH operations? It should be probably also restricted for |
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binary-only packages. |
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On Saturday 03 of April 2010 20:51:43 Tiziano Müller wrote: |
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> Don't fix the hack. Remove the preserve libs "feature", make the PMs |
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> check for rdeps per default before unmerging things. |
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This will only prevent creating orphans of uninstalled libraries, what about |
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upgraded ones when SOVERSION has been bumped (the most common case)? Besides I |
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can already imagine PMS-related discussion regarding "make the PMs check for |
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rdeps per default before unmerging things" - thx but no thx. |
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> Slot libraries where needed, slot dep operators (EAPI 4) will help. |
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Again, you suggest to SLOT every library that happened to bump SOVERSION. It's |
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unrealistic. Besides library should be slotted when it's API changes, for |
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source based distributions it's not needed for ABI changes - let's not confuse |
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those two. Also excessive slotting increases probability of breaking library |
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discovery mechanisms in various build systems (not everyone uses pkg-config). |
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> And if that doesn't work out we need a separate var to give the PM a hint |
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when API/ABI breakages happen (such that the PM knows when to re-install the |
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rev deps). |
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It needs PMS amended and thus GLEP. Please submit a GLEP item for this if you |
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see it fit. |
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Anyway, as explained in OT, it's not a problem of package manager dependencies |
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system but issue with broken/not smart build systems - no dependency tree |
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magic will solve this issue. |
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-- |
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regards |
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MM |
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