Index: kernel/Makefile
===================================================================
--- kernel/Makefile	(revision f563126931ea083d74828e89fd20f24e40d63b00)
+++ kernel/Makefile	(revision ba8f8cb33992cd7d978511d0e9192a299ffcaf3b)
@@ -49,10 +49,11 @@
 GCC_CFLAGS = -I$(INCLUDES) -O$(OPTIMIZATION) -imacros ../config.h \
 	-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32$(ENDIANESS) \
-	-finput-charset=UTF-8 -fno-builtin -Wall -Wextra -Wno-unused-parameter \
-	-Wmissing-prototypes -Werror -nostdlib -nostdinc -pipe
+	-finput-charset=UTF-8 -ffreestanding -fno-builtin -nostdlib -nostdinc \
+	-Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes -Werror \
+	-pipe
 
 ICC_CFLAGS = -I$(INCLUDES) -O$(OPTIMIZATION) -imacros ../config.h \
-	-fno-builtin -Wall -Wmissing-prototypes -Werror \
-	-nostdlib -nostdinc -wd170
+	-ffreestanding -fno-builtin -nostdlib -nostdinc -Wall -Wmissing-prototypes \
+	-Werror -wd170
 
 SUNCC_CFLAGS = -I$(INCLUDES) -xO$(OPTIMIZATION) \
@@ -62,6 +63,7 @@
 CLANG_CFLAGS = -I$(INCLUDES) -O$(OPTIMIZATION) -imacros ../config.h \
 	-fexec-charset=UTF-8 -fwide-exec-charset=UTF-32$(ENDIANESS) \
-	-finput-charset=UTF-8 -fno-builtin -Wall -Wextra -Wno-unused-parameter \
-	-Wmissing-prototypes -nostdlib -nostdinc -pipe
+	-finput-charset=UTF-8 -ffreestanding -fno-builtin -nostdlib -nostdinc \
+	-Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes -pipe \
+	-arch $(CLANG_ARCH)
 
 LFLAGS = -M