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On 25/08/2015 19:43, Fernando Rodriguez wrote: |
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> On Tuesday, August 25, 2015 12:30:09 PM Alan McKinnon wrote: |
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>> On 25/08/2015 04:28, Fernando Rodriguez wrote: |
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>>> On Monday, August 24, 2015 9:31:38 PM Alan McKinnon wrote: |
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>>>> Does anyone have an opinion to offer on bug 501468? |
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>>>> |
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>>>> https://bugs.gentoo.org/show_bug.cgi?id=501468 |
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>>>> |
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>>>> It's been annoying me for a week now with this message: |
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>>>> |
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>>>> !!! existing preserved libs: |
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>>>>>>> package: www-client/firefox-40.0.2 |
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>>>> * - /usr/lib64/firefox/libmozalloc.so |
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>>>> * used by /usr/lib64/thunderbird/components/libdbusservice.so |
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>>>> (mail-client/thunderbird-38.2.0) |
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>>>> * used by /usr/lib64/thunderbird/components/libmozgnome.so |
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>>>> (mail-client/thunderbird-38.2.0) |
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>>>> * used by |
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>>>> /usr/lib64/thunderbird/distribution/extensions/{e2fda1a4-762b-4020-b5ad- |
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>>> a41df1933103}/components/libcalbasecomps.so |
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>>>> (mail-client/thunderbird-38.2.0) |
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>>>> * used by 4 other files |
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>>>> |
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>>>> |
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>>>> Both Mozilla products ship this file: |
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>>>> |
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>>>> $ locate libmozalloc |
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>>>> /usr/lib64/firefox/libmozalloc.so |
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>>>> /usr/lib64/thunderbird/libmozalloc.so |
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>>>> |
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>>>> and according to preserved libs, thunderbird linked to the firefox copy. |
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>>>> The only offered solution on the bug is to use a MASK variable, which |
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>>>> seems to me an ugly hammer to swat a fly. |
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>>>> |
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>>>> I was wondering if there's a better way been developed in the last year. |
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>>> |
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>>> Actually, now I have a general idea of what's going on and that sounds |
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> like an |
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>>> acceptable solution but perhaps I could be better. This is what happens: |
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>>> |
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>>> 1. revdep-rebuild uses ldd to find breakage. It finds breakage in |
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>>> libdbusservice.so because firefox uses tricks to preload the library from |
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> it's |
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>>> directory. |
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>>> 2. revdep-rebuild find that thunderbird provides the library and thinks it |
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>>> needs to be rebuild. (And wrongly tells you that firefox links against it). |
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>>> |
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>>> A better way would be: |
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>>> |
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>>> 1. same as step 1 above |
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>>> 2. revdep-rebuild checks the package that provides the broken binary (in |
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> this |
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>>> case the firefox package), if this package also provides the missing |
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> library |
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>>> then it's safe to ignore the problem. |
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>>> 3. same as step 2 above. |
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>>> |
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>>> Another solution is to make patch firefox to use RPATH so ldd can find the |
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>>> labraries, this would also make prelink work better with firefox but it's |
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>>> probably not ideal to mantain. |
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>> |
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>> |
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>> that does make sense. In my case, it's not revdep-rebuild causing |
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>> problems, it's the preserved-rebuild message at the end of emerge -v |
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>> |
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>> At this level is there a difference? |
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> |
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> I don't know the details but it seems to me that portage either uses revdep- |
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> rebuild to find breakage (without scanning the whole system) before deleting |
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> the old libs for good or duplicates some of it's logic. Come to think of it, |
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> the SEARCH_DIR_MASK may not be ideal because if I understand what it does |
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> correctly then real breakage in firefox won't be detected. |
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> |
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My thought too. To me, SEARCH_DIR_MASK is fine for things like |
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/opt/skype because it's binary and either works or it doesn't, and when |
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it doesn't there's not much I can do about it. |
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It may be the least sucky of all available solutions, but it's still |
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swatting a fly with a hammer |
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |
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