When compiling the modplug plugin with -match= athlon-4, athlon-mp, athlon-xp
gst-register will core dump when trying to register the modplug plugin.
This happens only when compiling with -O, when compiling with -O2 it works.
This is because -O2 includes the -fgcse flag which fixes this problem.

The same happens when compiling with -match=pentium4 we couldn't find a solution
for this apart from forcibly setting -match=pentium3 when compinling with
pentium4.

GCC version 3.4.2.