[Bug 20042] Wine does not build on amd64 when linking to 32-bit libmpg123

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20042





--- Comment #21 from Erich Hoover <ehoover at mines.edu>  2009-11-01 17:07:04 ---
Created an attachment (id=24513)
 --> (http://bugs.winehq.org/attachment.cgi?id=24513)
Patch for mpg123.h to match symbol names for both 32-bit and 64-bit compilation

(In reply to comment #20)
> ...
> If it's harmless on a 32 bit build for 32 bit systems then I can just tell the
> package to always use that switch for that arch.  Is that the case?

Well, it's not harmless is part of the issue - if large file support is enabled
then the package could have problems if you try to use it with a large file (>
2 GB).  After downloading the pre-packaged 32-bit libmpg123-0 and taking a look
at the symbols it appears that my assessment was actually wrong.  Large file
support actually IS enabled on 32-bit ubuntu:
ehoover at ubuntu:~/libmpg123-i386-deb/usr/lib$ nm -D libmpg123.so.0.14.4 | grep
feedseek
000141f0 T mpg123_feedseek_64

So, that puts us back to fixing the header file.  If you apply the attached
patch to your /usr/include/mpg123.h then it will choose the correct symbol
names depending on the architecture.  If you compile libmpg123 with and without
the "-m32" flag you will see that you get a different mpg123.h header file, so
the "distributed" version should really handle both cases.

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