Bug 104055

Summary:	Failed to create/link with shared objects
Product:	Red Hat Enterprise Linux 3	Reporter:	Rob Kirkbride <rob.kirkbride>
Component:	gcc	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.0
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2003-09-09 14:47:39 UTC	Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Rob Kirkbride 2003-09-09 14:32:20 UTC

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Description of problem:
If I create a simple shared object and then attempt to link with this I get :
/usr/bin/ld: main: hidden symbol `__dso_handle' in
/usr/lib/gcc-lib/i386-redhat-linux/3.2.3/crtbegin.o is referenced by DSO

gcc -c -fPIC libtest.cpp (simple class with just constructor)
ld -shared -soname libtest.so.1 -o libtest.so.1.0 -lc libtest.o
/sbin/ldconfig -v -n .
ln -s libtest.so.1.0 libtest.so
g++ -o main main.cpp -L. -ltest

produces the error above.

main.cpp is just :-
#include "libtest.h"

int main() {
  libtest mylib;
}


Version-Release number of selected component (if applicable):
gcc-c++-3.2.3-18

How reproducible:
Always

Steps to Reproduce:
1. See description above

    

Actual Results:  Give the following error 
/usr/bin/ld: main: hidden symbol `__dso_handle' in
/usr/lib/gcc-lib/i386-redhat-linux/3.2.3/crtbegin.o is referenced by DSO

Expected Results:  No errors and the main excecutable should have been produced.

Additional info:

No special information. Reproduced on two different machines.
Fully up2date as of 14:30 GMT 09/09/2003

Comment 1 Jakub Jelinek 2003-09-09 14:47:39 UTC

The bug is in the way you're linking the shared library.
Never ever invoke ld by hand unless you know exactly what consequences it has.
gcc/g++ driver knows better what is needed.
The shared library should have been linked with:
g++ -shared -Wl,-soname,libtest.so.1 -o libtest.so.1.0 libtest.o

Comment 2 Jay Turner 2004-01-16 17:16:42 UTC

An errata has been issued which should help the problem described in this bug report. 
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen 
this bug report if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2003-344.html