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https://issues.apache.org/jira/browse/HADOOP-12036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597464#comment-14597464
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Alan Burlison commented on HADOOP-12036:
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The workaround is to set CMAKE_LIBRARY_ARCHITECTURE to the correct value for
the LP64 library location on the platform "amd64" or "sparcv9".
Before:
Found ZLIB: /usr/lib/libz.so.1 (found version "1.2.8")
Looking for BZ2_bzCompressInit in /usr/lib/libbz2.so.1
Looking for BZ2_bzCompressInit in /usr/lib/libbz2.so.1 - not found
Which is wrong as it's finding the 32 bit and not the 64 bit library, then
feeding it into a 64-bit test compile which not surprisingly blows up.
After:
Found ZLIB: /usr/lib/amd64/libz.so.1 (found version "1.2.8")
Looking for BZ2_bzCompressInit in /usr/lib/amd64/libbz2.so.1
Looking for BZ2_bzCompressInit in /usr/lib/amd64/libbz2.so.1 - found
which is correct.
This and the other architecture-related stuff needs moving from HadoopJNI.cmake
into HadoopCommon.cmake as all compilations need the tweaks, not just JNI code.
I believe the same move is also needed for the Linux equivalents.
The other issue of warnings such as "Manually-specified variables were not used
by the project ... REQUIRE_BZIP2" is because when the library *is* found the
REQUIRE_BZIP2 variable isn't tested and CMake isn't smart enough to see it's
used down a different code path. The easiest way of stopping the warnings is to
put a dummy assignment to REQUIRE_BZIP2 in the "library found" code path.
> Consolidate all of the cmake extensions in one directory
> --------------------------------------------------------
>
> Key: HADOOP-12036
> URL: https://issues.apache.org/jira/browse/HADOOP-12036
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Allen Wittenauer
> Assignee: Alan Burlison
> Attachments: HADOOP-12036.001.patch
>
>
> Rather than have a half-dozen redefinitions, custom extensions, etc, we
> should move them all to one location so that the cmake environment is
> consistent between the various native components.
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