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

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From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] 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


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Date: Tue, 28 Oct 2008 20:06:12 -0700
From: raindoctor_at_gmail.com
To: vickipierce51_at_hotmail.com
Subject: Re: How to Compile a Custom Library
CC: oracle-l_at_freelists.org

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_at_hotmail.com<mailto:vickipierce51_at_hotmail.com>> 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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