Re: Hello world program loads unused Oracle SO libraries

On Wed, 01 Nov 2006 13:40:43 +0100, herbert koelman wrote:


I've written the classic hello.c (the one that says hello world).

I used a makefile that builds programs to run against Oracle using OCCI.
So make runs this command:
cc -I /usr/lib/oracle/xe/app/oracle/product/10.2.0/client/rdbms/public/
-g -D_REENTRANT -I
/usr/lib/oracle/xe/app/oracle/product/10.2.0/client/rdbms/public/ -g
-D_REENTRANT -L /usr/lib/oracle/xe/app/oracle/product/10.2.0/client/lib
-L /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib -locci
-lclntsh -lpthread hello.c -o hello

This produced the hello program.

So far still good. Now I run the program and obtains:
[herbert@pc-bureau src]$ ./hello herbert
./hello: error while loading shared libraries: libocci.so.10.1: cannot
open shared object file: No such file or directory

I don't understand why would the program try to load a library it is not
using !!??

.... because you linked agained libocci ( -locci in your compile flags).
Obviously for just a hello world program, you wouldn't need to link
against these
.

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