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From "Avinash Lakshman" <alaksh...@facebook.com>
Subject RE: C/C++ interface for HDFS
Date Tue, 12 Jun 2007 04:44:08 GMT
The patch you sent me didn't seem to work complaining that some env
variable was empty. This is the Makefile I had used to fix my problem.

Thanks
Avinash


-----Original Message-----
From: Arun C Murthy [mailto:arunc@yahoo-inc.com] 
Sent: Monday, June 11, 2007 8:48 PM
To: hadoop-user@lucene.apache.org
Subject: Re: C/C++ interface for HDFS

On Mon, Jun 11, 2007 at 04:20:48PM -0700, Neeraj Mahajan wrote:
>If you look at the gcc options, then you can see that both 32-bit as
well as
>64-bit  environments  are specified. Probably only one of them should
be
>there. To fix this you might have to edit the Makefile in
c++/src/libhdfs
>and replace/remove the -m32 option.
>
>~ Neeraj
>
>On 6/11/07, Phantom <ghostwhoowalks@gmail.com> wrote:
>>
>>Hi
>>
>>I am assuming that if I need a C/C++ interface to HDFS I must build
>>libhdfs.

Yep.

>>This may be a problem very specific to my environment but would
appreciate
>>if someone could tell me what is going on ? So in order to build
libhdfs I
>>am running the command ant compile-libhdfs. But I get the following
output
>>:
>>
>>compile-libhdfs:
>>     [exec] gcc -g -Wall -O2 -fPIC -m64 -m32

Neeraj is right, there is a bug in the Makefile of libhdfs i.e. doesn't
handle 64-bit platforms correctly...

Could you try the attached patch and check if it works for you? Once you
give the go-ahead I'll go ahead and get it committed...

thanks,
Arun

>>-I/home/alakshman/jdk1.6.0_01/include
>>-I/home/alakshman/jdk1.6.0_01/include/linux -c hdfs.c -o
>>/home/alakshman/FB-Projects/hadoop-0.13.0/build/libhdfs/hdfs.o
>>     [exec] In file included from /usr/include/features.h:337,
>>     [exec]                  from /usr/include/sys/types.h:27,
>>     [exec]                  from hdfs.h:22,
>>     [exec]                  from hdfs.c:19:
>>     [exec] /usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No
such
>>file or directory
>>     [exec] make: ***
>>[/home/alakshman/FB-Projects/hadoop-0.13.0/build/libhdfs/hdfs.o]
>>Error 1
>>     [exec] Result: 2
>>
>>BUILD SUCCESSFUL
>>Total time: 1 second
>>
>>What is going on ? I have set my JAVA_HOME correctly and this is the
>>version
>>of my Linux box  2.6.12-1.1398_FC4smp.
>>
>>Thanks
>>A
>>

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