12334 fix gcc4 build
12322 kdb: removal of unused dependency recommended
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Reviewed by: Gordon Ross <gordon.w.ross@gmail.com>

@@ -8,14 +8,16 @@
 # source.  A copy of the CDDL is also available via the Internet at
 # http://www.illumos.org/license/CDDL.
 #
 
 # Copyright 2015, Richard Lowe.
+# Copyright 2020 Joyent, Inc.
 
 MAKE_INCLUDE= $(SRC)/cmd/make/include
 
 CC = $(NATIVECC)
 CCC = $(NATIVECCC)
 CFLAGS = $(NATIVE_CFLAGS)
 CFLAGS += $(CCVERBOSE)
 CCFLAGS = $(NATIVE_CCFLAGS) -_gcc4=-std=gnu++0x
 CPPFLAGS = -I$(MAKE_INCLUDE) $(MAKE_DEFS)
+CCNEEDED = $(NATIVECCNEEDED)