add NOASSERTS make flag that disables assert()s (NDEBUG=1).

. made some checks in vfs/vnode.c also respond to NDEBUG=1.
  . turned on in release builds

servers/vfs/vnode.c

@@ -16,6 +16,11 @@
 #include <minix/vfsif.h>
 
 /* Is vnode pointer reasonable? */
+#if NDEBUG
+#define SANEVP(v)
+#define CHECKVN(v)
+#define ASSERTVP(v)
+#else
 #define SANEVP(v) ((((v) >= &vnode[0] && (v) < &vnode[NR_VNODES])))
 
 #define BADVP(v, f, l) printf("%s:%d: bad vp %p\n", f, l, v)
@@ -29,6 +34,7 @@
 /* vp check that panics */
 #define ASSERTVP(v) if(!SANEVP(v)) { \
 	BADVP(v, __FILE__, __LINE__); panic("bad vp"); }
+#endif
 
 /*===========================================================================*
  *				get_free_vnode				     *

share/mk/bsd.own.mk

@@ -16,6 +16,10 @@ AFLAGS += ${SMP_FLAGS}
 MAKECONF?=	/etc/make.conf
 .-include "${MAKECONF}"
 
+.ifdef NOASSERTS
+CFLAGS += -DNDEBUG=1
+.endif
+
 #
 # CPU model, derived from MACHINE_ARCH
 #

tools/chrootmake.sh

@@ -8,7 +8,7 @@ then	make $@
 	exit $?
 fi
 
-make world
+make NOASSERTS=yes world
 cd tools 
 rm revision
 rm /boot/image/*