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https://issues.apache.org/jira/browse/HADOOP-8196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HADOOP-8196:
-------------------------------------
Affects Version/s: (was: 0.24.0)
2.0.0-alpha
> avoid linker's stripping of dead code from interfering with configure's
> library name resolution
> -----------------------------------------------------------------------------------------------
>
> Key: HADOOP-8196
> URL: https://issues.apache.org/jira/browse/HADOOP-8196
> Project: Hadoop Common
> Issue Type: Bug
> Components: native
> Affects Versions: 2.0.0-alpha
> Reporter: Eugene Koontz
> Attachments: HADOOP-8196.patch
>
>
> The configure script generated by
> hadoop-common/hadoop-common-project/hadoop-common/src/main/native/configure.ac
> uses the AC_COMPUTE_NEEDED_DSO m4 macro to generate a small probe program in
> C which it then compiles and links, and then scans the resultant binary to
> find the names of certain libraries: currently this is used for Zlib and
> Snappy.
> I was unable to compile with -Pnative on my Ubuntu Linux install because
> configure could not find libz and libsnappy. This turned out to be because
> the linker is removing the dependencies on libz and libsnappy at link-time
> because the libraries in question are not used in the simple probe code
> generated by the AC_COMPUTE_NEEDED_DSO m4 macro.
> So my fix is modify the AC_COMPUTE_NEEDED_DSO to take another parameter that
> copies the given argument's text into the C program. Then, in the call to
> AC_COMPUTE_NEEDED_DSO, we can use this additional parameter, to include, in
> the generated C code, an actual library function call for each library. This
> prevents the linker from removing the linkage to the desired libraries.
> My gcc and ldd version information are given below:
> {code}
> eugene@latitude:~/hadoop-common$ gcc --version
> gcc (Ubuntu/Linaro 4.6.3-1ubuntu3) 4.6.3
> Copyright (C) 2011 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions. There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> eugene@latitude:~/hadoop-common$ ld --version
> GNU ld (GNU Binutils for Ubuntu) 2.22
> Copyright 2011 Free Software Foundation, Inc.
> This program is free software; you may redistribute it under the terms of
> the GNU General Public License version 3 or (at your option) a later version.
> This program has absolutely no warranty.
> {code}
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