@@ -601,11 +601,12 @@
 	])
 
 	AC_MSG_CHECKING(whether we have an atomic ops assembly implementation)
 	AC_EGREP_CPP(yes, [
 		#if defined(__GNUC__) && (defined(__i386__) || \
-			defined(__x86_64__) || defined(__amd64__))
+			defined(__x86_64__) || defined(__amd64__)) ||
+			defined(__ppc__)
 		yes
 		#endif
 	], [
 		AC_MSG_RESULT(yes)
 		test x"$atomic_ops" = x"none" && \