Update make for hello examples

native_client_sdk/src/examples/hello_world_interactive/Makefile

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 #
 # GNU Make based build file.  For details on GNU Make see:
 #   http://www.gnu.org/software/make/manual/make.html
 #
 #
 
 
 #
 # Default configuration
 #
 # By default we will build a Debug configuration using the GCC newlib toolcahin
 # to override this, specify TOOLCHAIN=newlib|glibc or CONFIG=Debug|Release on
 # the make command-line or in this file prior to including common.mk
 #
 include common.mk
 
 
 #
 # Target Name
 #
 # The base name of the final NEXE, also the name of the NMF file containing
 # the mapping between architecture and actual NEXE.
 #
-TARGET=hello_world_stdio
+TARGET=hello_world_interactive
 
 #
 # List of sources to compile
 #
-SOURCES=hello_world.c
+SOURCES=hello_world.cc helper_functions.cc
 
 
 #
 # List of libraries to link against.  Unlike some tools, the GCC and LLVM
 # based tools require libraries to be specified in the correct order.  The
 # order should be symbol reference followed by symbol definition, with direct
 # sources to the link (object files) are left most.  In this case:
 #    hello_world -> ppapi_main -> ppapi_cpp -> ppapi -> pthread -> libc
-# Notice that pthread and libc are implied and come last through standard
-# compiler/link switches, for example -pthread.
-# 
-LIBS=ppapi_main nacl_mounts ppapi_cpp ppapi
+# Notice that libc is implied and come last through standard compiler/link
+# switches.
+#
+# We break this list down into two parts, the set we need to rebuild (DEPS)
+# and the set we do not.
+#
+LIBS=ppapi_cpp ppapi pthread
 
 
 #
+# Use the library dependency macro for each dependency
+#
+$(foreach dep,$(DEPS),$(eval $(call DEPEND_RULE,$(dep))))
+
+#
 # Use the compile macro for each source.
 #
 $(foreach src,$(SOURCES),$(eval $(call COMPILE_RULE,$(src))))
 
 #
 # Use the link macro for this target on the list of sources.
 #
 $(eval $(call LINK_RULE,$(TARGET),$(SOURCES),$(LIBS)))
 
 #
 # Specify the NMF to be created with no additional arugments.
 #
 $(eval $(call NMF_RULE,$(TARGET),))