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workaround for virtualpc bug

From: Christoph Egger
Subject: workaround for virtualpc bug
Date: Fri, 28 Oct 2005 15:00:21 +0200 (MEST)


I've attached a patch which works around a bug in VirtualPC.
(Sorry for using application/octet-stream, but the webmail interface
 provides no way to choose text-type)
I spent lots of time to track down what goes wrong and under which

I have the following environment:

- Windows 2000 runs in Virtual PC.
- Virtual PC runs under MacOSX Tiger
- In Virtual PC the VPC-Addons for Windows are installed
- In Windows 2000 runs cygwin.
- The source tree is mapped into VirtualPC, windows see's it as an extra

The following condition must be met to reproduce the virtualpc bug:

- VirtualPC must run in the background or in the dock
- you must link a module and use -export-symbols
- $output_objdir/$libname.filter must be empty

When the conditions are met and the error appears, then you see
this error:

Cannot export : symbol not defined
Creating library file: $output_objdir/$libname.dll.a
collect2: ld returned 1 exit status

then when you run on the console:

od -a $output_objdir/$libname.def then you get this:

0000000  nul nul nul

or sometimes this:

0000000   `   / soh

The patch works around the bug in virtualpc by not operating
on an empty file.

The patch has been reviewed and okey'd by Peter Ekberg (who
originally wrote the piece of code the patch touches).




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Attachment: ltmain-virtualpc.m4sh.diff
Description: Binary data

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