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Date: Mon, 8 Oct 2007 21:38:50 -0700 (PDT)
From: "Arun C Murthy (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Commented: (HADOOP-2009) configure script for compiling
 hadoop native doesn't set lzo lib name correctly
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    [ https://issues.apache.org/jira/browse/HADOOP-2009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12533260 ] 

Arun C Murthy commented on HADOOP-2009:
---------------------------------------

Joydeep,

I don't have access to an amd64-fedora box, could you please try this and let me know?

{noformat}
$ echo 'int main(int argc, char **argv){return 0;}' > conftest.c
$ gcc -o conftest conftest.c -llzo2
$ objdump -p conftest | grep NEEDED
{noformat}

on my system I get:
{noformat}
$ objdump -p conftest | grep NEEDED
  NEEDED      liblzo2.so.2
  NEEDED      libc.so.6
{noformat}


> configure script for compiling hadoop native doesn't set lzo lib name correctly
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-2009
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2009
>             Project: Hadoop
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.13.1
>         Environment: Fedora, amd64
>            Reporter: Joydeep Sen Sarma
>            Assignee: Arun C Murthy
>
> Looks like this was already reported (but not resolved on the the list): http://tinyurl.com/2rwu6x
> I would like to compile libhadoop on amd64/Fedora and everything seems kosher until I hit this compile error:
>      [exec] /home/jssarma/fbprojects/hadoop-0.13.1/src/native/src/org/apache/hadoop/io/compress/lzo/LzoCompressor.c:116: error: syntax error before ',' token
> the line in question is:
>     // Load liblzo2.so                                                                                    
>     liblzo2 = dlopen(HADOOP_LZO_LIBRARY, RTLD_LAZY | RTLD_GLOBAL);
> seems like this is being set by:
> configure:#define HADOOP_LZO_LIBRARY ${ac_cv_libname_lzo2}
> I tried executing the relevant part of configure by hand:
>   if test -z "`${CC} -o conftest conftest.c -llzo2 2>&1`"; then
>         if test ! -z "`which objdump`"; then
>       ac_cv_libname_lzo2="`objdump -p conftest | grep NEEDED | grep lzo2 | sed 's/\W*NEEDED\W*\(.*\)\W*$/\
> \"\1\"/'`"
> This is not working on my system, since:
> > objdump -p conftest | grep NEEDED                         
>   NEEDED      libc.so.6
> So that would explain the compile error. Editing the configure script manually for now works.

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