Update make for hello examples

native_client_sdk/src/examples/hello_world_stdio/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
 #
 #
 
@@ skipping 21 matching lines @@
 #
 SOURCES=hello_world.c
 
 
 #
 # 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.
+#
+DEPS=ppapi_main

[binji, 2013/01/02 21:02:26]

why do we need to rebuild ppapi_main?

[noelallen1, 2013/01/07 20:01:30]

We provide the DEPS in case someone wants to modify ppapi_main and have it
rebuild (this was really useful for printf debugging).  In the future we may
want to do this for ppapi_cpp as well.

On 2013/01/02 21:02:26, binji wrote:

[binji, 2013/01/08 23:39:32]

OK, seems like we'd want to include any buildable library here then
(nacl_mounts?)

On 2013/01/07 20:01:30, noelallen1 wrote:

[noelallen_use_chromium, 2013/01/09 17:48:46]

Yes.  nacl_mounts should be in there.  It was removed because it wasn't
supporting all versions (host, arm, newlib, glibc)  But I believe that now
works.

On 2013/01/08 23:39:32, binji wrote:

+LIBS=$(DEPS) ppapi_cpp ppapi pthread nacl_mounts
 
 
 #
+# 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),))