RE: How to Compile a Custom Library

Vicki,

The error is "wrong ELF class: ELFCLASS32".  This means that you're trying to 
use a 32-bit library, and it's not working.  Almost certainly, the program 
that's attempting to run, which is encountering this error, is a 64-bit binary. 
 A 64-bit binary *must* use 64-bit libraries.  You need to locate and install 
the 64-bit version of this library.  If this library is custom code, then, as 
previously suggested, you'll need to re-compile it from source code.  This 
should be a pretty easy task for an experienced C programmer, but is 
non-trivial, and probably beyond the scope of something I could talk you 
through in email.

Very briefly, you'll need:

1.)    A C compiler.  Gcc is a popular choice these days, but your OS may 
provide a proprietary one as well.  (Type 'which cc' or 'which gcc' to see if 
one is installed.)

2.)    All the source code for the library.  This will generally be all the *.h 
and *.c files.

3.)    A make file, to help build the library.  (Optional, but helpful, 
particularly if you have multiple *.c files that make up your library.)

Other possibly helpful commands:
'file', will tell you if a particular binary, object or shared object file is 
32 or 64 bit.  ('file /path/to/your/binary/or/object/file')
'ldd', (list dynamic dependencies), will tell you if a particular binary is 
missing any dynamic library dependencies.


Hope that helps,

-Mark
--
Mark J. Bobak
Senior Database Administrator, System & Product Technologies
ProQuest
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Ann Arbor MI 48106-1346
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ProQuest...Start here.

From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of Vicki Pierce
Sent: Wednesday, October 29, 2008 10:43 AM
To: Pedro Espinoza
Cc: oracle-l
Subject: RE: How to Compile a Custom Library

When I try to start the Apps services after the clone, I get an error regarding 
this library:

 ld.so.1: ps: fatal: /erp/11.5.10/appltop/cust_stuff/fnd/bin/libopenlibname.so: 
wrong ELF class: ELFCLASS32

If I don't need to recompile the library, then do you know what is causing the 
error?  And how do I fix it?

Thanks!
Vicki Pierce
________________________________

Date: Tue, 28 Oct 2008 20:06:12 -0700
From: raindoctor@xxxxxxxxx
To: vickipierce51@xxxxxxxxxxx
Subject: Re: How to Compile a Custom Library
CC: oracle-l@xxxxxxxxxxxxx

Well, you need to get the all header files *.h, and relevant *.c files, and 
compile against 64 bit libc, libm, etc. Sometimes, you may have to modify your 
c program as well.

Just leave the 32 bit so file like it as, since 64 bit solaris 10 contains both 
32 bit n 64 bit libc, etc.



On Tue, Oct 28, 2008 at 1:58 PM, Vicki Pierce 
<vickipierce51@xxxxxxxxxxx<mailto:vickipierce51@xxxxxxxxxxx>> wrote:
We moved our Oracle Apps software to a new 64-bit Solaris 10 server; there is a 
custom library (.so file) that is still in 32-bit mode.  I need to compile it 
so that it is 64-bit.  How do I go about doing that?

RDBMS version 9.2.0.7<http://9.2.0.7/>; Apps version 
11.5.10.2<http://11.5.10.2/>

Thanks in advance!
Vicki Pierce

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