--- a/xpcom/glue/objs.mk	
+++ a/xpcom/glue/objs.mk	
@@ -71,13 +71,13 @@ XPCOM_GLUENS_SRC_LCPPSRCS =      \
   SSE.cpp                        \
   unused.cpp                     \
   nsProxyRelease.cpp             \
   nsTextFormatter.cpp            \
   GenericFactory.cpp             \
   FileUtils.cpp                  \
   $(NULL)
 
-ifeq (arm,$(TARGET_CPU))
+ifneq (,$(filter arm%,$(TARGET_CPU)))
 XPCOM_GLUENS_SRC_LCPPSRCS += arm.cpp
 endif
 
 XPCOM_GLUENS_SRC_CPPSRCS = $(addprefix $(topsrcdir)/xpcom/glue/,$(XPCOM_GLUENS_SRC_LCPPSRCS))