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On Tue, Aug 31, 2010 at 07:27:57PM +0300, Eray Aslan wrote: |
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> app-crypt/heimdal looks for db header files in db4/db.h db3/db.h db.h |
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> db_185.h - in that order - and links with ldb. In Gentoo, we do not |
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> have a db4 directory but rather db3 db4.7 db4.8 db5.0 etc. |
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And the reason we don't have it, nor a symlink for it, is that if you |
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build against db4.7 and then upgrade the backing library to db4.8, some |
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bad things have happened in the past. |
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> Consequently, when both sys-libs/db-3 and sys-libs/db-4 are present, |
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> heimdal links against libdb, which is a symlink against libdb-4.x, but |
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> uses headers from db-3. Result is a segfault in heimdal - serves it |
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> right for mixing it up :) . |
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Same problem can happen within db4 version per above. |
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> * I am guessing this is not the first time. Any pointers on how to |
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> solve this gracefully? inheriting db-use in ebuild and sedding works but |
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> - is ugly |
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> - there is a bunch of #ifdef db4/db.h's in the source so sedding the |
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> configure script is not enough |
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> - this is a security related package so I try to refrain from patching |
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> * I can submit upstream a proper patch that will make the code look at |
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> db.h first and db4/db.h db3/db.h later. Is there a (unwritten?) rule |
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> that says look at db.h first? Any links? |
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It should iterate supported versions of DB, from highest to lowest. |
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db.h should come at the end because it may be part of db-1.85. |
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Unfortunately there isn't really any graceful fix. The buildsystem needs |
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to be patched, ideally to allow explicit passing of the DB include |
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directory and file to link. DB_VERSION_MAJOR/DB_VERSION_MINOR are the |
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best defines to check, they will work from db3 onwards. |
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db-use was intended to help packages where can specify the include dir |
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and library directly. heimdel will need patching becase of those ifdefs, |
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but that's the price for supporting |
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|
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-- |
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Robin Hugh Johnson |
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Gentoo Linux: Developer, Trustee & Infrastructure Lead |
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E-Mail : robbat2@g.o |
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GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85 |
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