IRIX: -KPIC is the default and hence unnecessary. In o32 mode,

cc does not understand the -exceptions option, so specify that
option only for the C++ compiler.  Thanks to Brian Ostrom
(briano@netscape.com) for the bug report.

nsprpub/lib/prstreams/Makefile

@@ -29,9 +29,8 @@ ifeq ($(OS_ARCH),SunOS)
 endif
 
 ifeq ($(OS_ARCH), IRIX)
-    CFLAGS += -KPIC
     ifneq ($(OS_RELEASE),5.3)
-        CFLAGS += -exceptions
+        CCC_ONLY_FLAGS += -exceptions
     endif
 endif