Add a knob for compiling the tree -DNDEBUG. This turns off all the

asserts and makes binaries smaller.  The binaries also become
repeatable again.  As it was, without this md5's of binaries built
with different paths differed.

# Where do I document this?

share/mk/bsd.lib.mk

@@ -28,6 +28,10 @@ SONAME?=	${SHLIB_NAME}
 CFLAGS+=	${CRUNCH_CFLAGS}
 .endif
 
+.if ${MK_ASSERT_DEBUG} == "no"
+CFLAGS+= -DNDEBUG
+.endif
+
 .if defined(DEBUG_FLAGS)
 CFLAGS+= ${DEBUG_FLAGS}
 .endif

share/mk/bsd.own.mk

@@ -282,6 +282,7 @@ WITH_IDEA=
 #
 .for var in \
     ACPI \
+    ASSERT_DEBUG \
     ATM \
     AUDIT \
     AUTHPF \

share/mk/bsd.prog.mk

@@ -10,6 +10,10 @@
 CFLAGS+=${COPTS}
 .endif
 
+.if ${MK_ASSERT_DEBUG} == "no"
+CFLAGS+= -DNDEBUG
+.endif
+
 .if defined(DEBUG_FLAGS)
 CFLAGS+=${DEBUG_FLAGS}
 .endif