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From "Trevor Robinson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7868) Hadoop native fails to compile when default linker option is -Wl,--as-needed
Date Tue, 08 May 2012 17:17:56 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270622#comment-13270622
] 

Trevor Robinson commented on HADOOP-7868:
-----------------------------------------

I was surprised that supporting three different tools was necessary, but I wasn't bold enough
to assume it was safe to remove any. ;-)

As a bit of context for someone thinking about committing this patch (please do!), it along
with HADOOP-8370 and HDFS-3383 enabling building on Ubuntu 12.04 ARM Server.
                
> Hadoop native fails to compile when default linker option is -Wl,--as-needed
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-7868
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7868
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 0.20.205.0, 1.0.0, 0.23.0
>         Environment: Ubuntu Precise, Ubuntu Oneiric, Debian Unstable
>            Reporter: James Page
>         Attachments: HADOOP-7868-portable.patch, HADOOP-7868.patch
>
>
> Recent releases of Ubuntu and Debian have switched to using --as-needed as default when
linking binaries.
> As a result the AC_COMPUTE_NEEDED_DSO fails to find the required DSO names during execution
of configure resulting in a build failure.
> Explicitly using "-Wl,--no-as-needed" in this macro when required resolves this issue.
> See http://wiki.debian.org/ToolChain/DSOLinking for a few more details

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