diff -uNr ac3dec-0.6.1.orig/configure.in ac3dec-0.6.1/configure.in
--- ac3dec-0.6.1.orig/configure.in	Fri Apr 12 23:53:13 2002
+++ ac3dec-0.6.1/configure.in	Fri Apr 12 23:53:51 2002
@@ -30,6 +30,7 @@
 alpha*-*) AC_DEFINE(__alpha__);;
 sparc-*) AC_DEFINE(__sparc__);;
 ppc-*) AC_DEFINE(__ppc__);;
+powerpc-*) AC_DEFINE(__ppc__);;
 *) echo "$host is not currently supported by ac3dec"; exit 1;;
 esac