Index: boot/Makefile.build
===================================================================
--- boot/Makefile.build	(revision c573e0f7916129321e410bb76561bc869ceeeeb8)
+++ boot/Makefile.build	(revision 75b9c3d212f00dc65be3fb483d603337b0f43e5e)
@@ -47,8 +47,4 @@
 	-Werror-implicit-function-declaration -wd170
 
-SUNCC_CFLAGS = -I$(INCLUDES) -xO$(OPTIMIZATION) \
-	-xnolib -xc99=all -features=extensions \
-	-erroff=E_ZERO_SIZED_STRUCT_UNION
-
 CLANG_CFLAGS = -I$(INCLUDES) -O$(OPTIMIZATION) -imacros $(CONFIG_HEADER) \
 	-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32$(ENDIANESS) \
@@ -66,5 +62,4 @@
 	GCC_CFLAGS += -g
 	ICC_CFLAGS += -g
-	SUNCC_CFLAGS += -g
 	CLANG_CFLAGS += -g
 endif
@@ -83,10 +78,4 @@
 	CFLAGS = $(ICC_CFLAGS) $(EXTRA_CFLAGS)
 	DEPEND_DEFS = $(DEFS) $(CONFIG_DEFS)
-endif
-
-ifeq ($(COMPILER),suncc)
-	CFLAGS = $(SUNCC_CFLAGS) $(EXTRA_CFLAGS)
-	DEFS += $(CONFIG_DEFS)
-	DEPEND_DEFS = $(DEFS)
 endif