https://bugzilla.mozilla.org/show_bug.cgi?id=627668 diff -up xulrunner-2.0/mozilla/js/src/Makefile.in.big-endian-jit xulrunner-2.0/mozilla/js/src/Makefile.in --- xulrunner-2.0/mozilla/js/src/Makefile.in.big-endian-jit 2010-11-04 21:05:48.000000000 +0100 +++ xulrunner-2.0/mozilla/js/src/Makefile.in 2010-11-15 14:17:39.000000000 +0100 @@ -371,7 +371,7 @@ CPPSRCS += checks.cc \ # END enclude sources for V8 dtoa ############################################# -ifeq (,$(filter-out powerpc sparc,$(TARGET_CPU))) +ifeq (,$(filter-out powerpc powerpc64 sparc sparc64 s390 s390x,$(TARGET_CPU))) VPATH += $(srcdir)/assembler \ $(srcdir)/assembler/wtf \