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Odd behavior with symbol naming mismatch between x86 and bfin platforms using version scripts
- From: "Kevin P. Fleming" <kpfleming at digium dot com>
- To: Binutils <binutils at sourceware dot org>
- Date: Mon, 08 Feb 2010 11:00:58 -0600
- Subject: Odd behavior with symbol naming mismatch between x86 and bfin platforms using version scripts
- Openpgp: id=05FB8DB2
One of our developers is running into an issue with version scripts not
seeing symbols with the same naming scheme when code is built using GCC
on an x86 platform vs. using the Blackfin tools (versions listed below).
The attached files demonstrate the problem; when run as:
$ CC=cc CFLAG="-fPIC" ./mk
everything works as expected.
when run as:
$ CC=bfin-linux-uclibc-gcc CFLAG="-mfdpic " ./mk
the test fails, because the 'testcallback' function appears in the
dynamic symbol table as '_testcallback', and this the version script
causes it to be filtered out.
For x86 builds, we are using:
> gcc (Ubuntu 4.4.1-4ubuntu9) 4.4.1
> GNU ld (GNU Binutils for Ubuntu) 2.20
For Blackfin builds:
> bfin-linux-uclibc-gcc (ADI/svn-3473) 4.3.3
> GNU ld version 2.17
Is this a compiler bug, or a linker bug, or expected behavior?
--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming@digium.com
Check us out at www.digium.com & www.asterisk.org