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https://bugzilla.redhat.com/show_bug.cgi?id=812573

--- Comment #5 from Erik van Pienbroek erik-fedora@vanpienbroek.nl 2012-04-23 17:26:59 EDT --- While testing this package I noticed a difference in the configure output between the win32 and win64 build:

win32: configure: *** checking feature: bz2 library for matroska *** checking for BZ2_bzCompress in -lbz2... no

win64: configure: *** checking feature: bz2 library for matroska *** checking for BZ2_bzCompress in -lbz2... yes

I suspect this is caused by the fact that exported symbols (with the __stdcall calling convention) on win32 are prefixed with an _ which doesn't happen for win64 and autoconf is too dumb to include the real <bzlib.h> header. You might want to look into this and workaround this autoconf behaviour