Original commit message from CVS:
Made sure the mmx does not get compiled on non x86 CPUs
filter_LTLIBRARIES = libgstcolorspace.la
-libgstcolorspace_la_SOURCES = gstcolorspace.c rgb2rgb.c yuv2rgb.c yuv2rgb_mmx16.s
+if HAVE_CPU_I386
+ARCHSRCS = yuv2rgb_mmx16.s
+else
+ARCHSRCS =
+endif
+
+libgstcolorspace_la_SOURCES = gstcolorspace.c rgb2rgb.c yuv2rgb.c $(ARCHSRCS)
libgstcolorspaceincludedir = $(includedir)/gst/libs/gstcolorspace
libgstcolorspaceinclude_HEADERS = gstcolorspace.h