8411 Build should warn when linking against libraries outside proto area

*** 18,27 ****
--- 18,28 ----
  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ # Copyright 2017 RackTop Systems.
  #
  
  LIBRARY =       ioctl.a
  VERS =
  OBJECTS =       ioctl.o
*** 49,58 ****
--- 50,63 ----
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CPPFLAGS +=     -I$(ADJUNCT_PROTO)/usr/include/python$(PYTHON_VERSION)
  CPPFLAGS +=     -I../../../uts/common/fs/zfs
  CPPFLAGS +=     -I../../../common/zfs
  
+ # Allow libpython to be taken from outside of the proto area.
+ $(ADJUNCT_PROTO_NOT_SET)DYNFLAGS += \
+         $(ZASSERTDEFLIB)=libpython$(PYTHON_VERSION).so
+ 
  .KEEP_STATE:
  
  all: $(PYOBJS) $(LIBS)
  
  install: all $(ROOTPYZFSFILES)