[NaCl SDK] Add a very simple getting_started example at top-level.

native_client_sdk/src/getting_started/part1/Makefile

Index: native_client_sdk/src/getting_started/part1/Makefile
diff --git a/native_client_sdk/src/getting_started/part1/Makefile b/native_client_sdk/src/getting_started/part1/Makefile
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index 0000000000000000000000000000000000000000..7df385e0923b4335cdd2abbda8aea06f55bc263c
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+# Copyright (c) 2013 The Native Client 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
+#
+
+#
+# Get pepper directory for toolchain and includes.
+#
+# If NACL_SDK_ROOT is not set, then assume it can be found three directories up.
+#
+THIS_MAKEFILE := $(abspath $(lastword $(MAKEFILE_LIST)))
+NACL_SDK_ROOT ?= $(abspath $(dir $(THIS_MAKEFILE))../..)
+
+# Project Build flags
+WARNINGS := -Wno-long-long -Wall -Wswitch-enum -pedantic -Werror
+CXXFLAGS := -pthread -std=gnu++98 $(WARNINGS)
+
+#
+# Compute tool paths
+#
+GETOS := python $(NACL_SDK_ROOT)/tools/getos.py
+OSHELPERS = python $(NACL_SDK_ROOT)/tools/oshelpers.py
+OSNAME := $(shell $(GETOS))
+RM := $(OSHELPERS) rm
+
+PNACL_TC_PATH := $(abspath $(NACL_SDK_ROOT)/toolchain/$(OSNAME)_pnacl)
+PNACL_CXX := $(PNACL_TC_PATH)/newlib/bin/pnacl-clang++
+PNACL_FINALIZE := $(PNACL_TC_PATH)/newlib/bin/pnacl-finalize
+CXXFLAGS := -I$(NACL_SDK_ROOT)/include
+LDFLAGS := -L$(NACL_SDK_ROOT)/lib/pnacl/Release -lppapi_cpp -lppapi
+
+#
+# Disable DOS PATH warning when using Cygwin based tools Windows
+#
+CYGWIN ?= nodosfilewarning
+export CYGWIN
+
+
+# Declare the ALL target first, to make the 'all' target the default build
+all: hello_tutorial.pexe
+
+clean:
+	$(RM) hello_tutorial.pexe hello_tutorial.bc
+
+hello_tutorial.bc: hello_tutorial.cc
+	$(PNACL_CXX) -o $@ $< -O2 $(CXXFLAGS) $(LDFLAGS)
+
+hello_tutorial.pexe: hello_tutorial.bc
+	$(PNACL_FINALIZE) -o $@ $<
+
+
+#
+# File to redirect to to in order to hide output.
+#
+ifeq ($(OSNAME),win)
+DEV_NULL = nul
+else
+DEV_NULL = /dev/null
+endif
+
+#
+# Assign a sensible default to CHROME_PATH.
+#
+CHROME_PATH ?= $(shell $(GETOS) --chrome 2> $(DEV_NULL))
+
+#
+# Verify we can find the Chrome executable if we need to launch it.
+#
+.PHONY: check_for_chrome
+check_for_chrome:
+ifeq (,$(wildcard $(CHROME_PATH)))
+	$(warning No valid Chrome found at CHROME_PATH=$(CHROME_PATH))
+	$(error Set CHROME_PATH via an environment variable, or command-line.)
+else
+	$(warning Using chrome at: $(CHROME_PATH))
+endif
+
+#
+# Variables for running examples with Chrome.
+#
+RUN_PY := python $(NACL_SDK_ROOT)/tools/run.py
+
+# Additional arguments to pass to Chrome.
+CHROME_ARGS += --enable-pnacl --no-first-run
+CHROME_ARGS += --user-data-dir=$(CURDIR)/user-data-dir
+
+# Define a phony rule so it always runs, to run the pexe.
+.PHONY: run
+run: check_for_chrome all
+	$(RUN_PY) -C $(CURDIR) -P index.html -- $(CHROME_PATH) $(CHROME_ARGS)