Enable Native Client build of V8.

Makefile

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 18 matching lines @@
 # Variable default definitions. Override them by exporting them in your shell.
 CXX ?= g++
 LINK ?= g++
 OUTDIR ?= out
 TESTJOBS ?=
 GYPFLAGS ?=
 TESTFLAGS ?=
 ANDROID_NDK_ROOT ?=
 ANDROID_TOOLCHAIN ?=
 ANDROID_V8 ?= /data/local/v8
+NACL_SDK_ROOT ?=
 
 # Special build flags. Use them like this: "make library=shared"
 
 # library=shared || component=shared_library
 ifeq ($(library), shared)
   GYPFLAGS += -Dcomponent=shared_library
 endif
 ifdef component
   GYPFLAGS += -Dcomponent=$(component)
 endif
@@ skipping 84 matching lines @@
 endif
 
 # ----------------- available targets: --------------------
 # - "dependencies": pulls in external dependencies (currently: GYP)
 # - any arch listed in ARCHES (see below)
 # - any mode listed in MODES
 # - every combination <arch>.<mode>, e.g. "ia32.release"
 # - "native": current host's architecture, release mode
 # - any of the above with .check appended, e.g. "ia32.release.check"
 # - "android": cross-compile for Android/ARM
+# - "nacl" : cross-compile for Native Client (ia32 and x64)
 # - default (no target specified): build all DEFAULT_ARCHES and MODES
 # - "check": build all targets and run all tests
 # - "<arch>.clean" for any <arch> in ARCHES
 # - "clean": clean all ARCHES
 
 # ----------------- internal stuff ------------------------
 
 # Architectures and modes to be compiled. Consider these to be internal
 # variables, don't override them (use the targets instead).
 ARCHES = ia32 x64 arm mipsel
 DEFAULT_ARCHES = ia32 x64 arm
 MODES = release debug
 ANDROID_ARCHES = android_ia32 android_arm android_mipsel
+NACL_ARCHES = nacl_ia32 nacl_x64
 
 # List of files that trigger Makefile regeneration:
 GYPFILES = build/all.gyp build/common.gypi build/standalone.gypi \
            preparser/preparser.gyp samples/samples.gyp src/d8.gyp \
            test/cctest/cctest.gyp tools/gyp/v8.gyp
 
 # If vtunejit=on, the v8vtune.gyp will be appended.
 ifeq ($(vtunejit), on)
   GYPFILES += src/third_party/vtune/v8vtune.gyp
 endif
 # Generates all combinations of ARCHES and MODES, e.g. "ia32.release".
 BUILDS = $(foreach mode,$(MODES),$(addsuffix .$(mode),$(ARCHES)))
 ANDROID_BUILDS = $(foreach mode,$(MODES), \
                    $(addsuffix .$(mode),$(ANDROID_ARCHES)))
+NACL_BUILDS = $(foreach mode,$(MODES), \
+                   $(addsuffix .$(mode),$(NACL_ARCHES)))
 # Generates corresponding test targets, e.g. "ia32.release.check".
 CHECKS = $(addsuffix .check,$(BUILDS))
 ANDROID_CHECKS = $(addsuffix .check,$(ANDROID_BUILDS))
+NACL_CHECKS = $(addsuffix .check,$(NACL_BUILDS))
 # File where previously used GYPFLAGS are stored.
 ENVFILE = $(OUTDIR)/environment
 
 .PHONY: all check clean dependencies $(ENVFILE).new native \
         $(ARCHES) $(MODES) $(BUILDS) $(CHECKS) $(addsuffix .clean,$(ARCHES)) \
         $(addsuffix .check,$(MODES)) $(addsuffix .check,$(ARCHES)) \
         $(ANDROID_ARCHES) $(ANDROID_BUILDS) $(ANDROID_CHECKS) \
-        must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN
+        must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN \
+        $(NACL_ARCHES) $(NACL_BUILDS) $(NACL_CHECKS) \
+        must-set-NACL_SDK_ROOT
 
 # Target definitions. "all" is the default.
 all: $(MODES)
 
 # Special target for the buildbots to use. Depends on $(OUTDIR)/Makefile
 # having been created before.
 buildbot:
         $(MAKE) -C "$(OUTDIR)" BUILDTYPE=$(BUILDTYPE) \
                 builddir="$(abspath $(OUTDIR))/$(BUILDTYPE)"
 
@@ skipping 23 matching lines @@
 $(ANDROID_ARCHES): $(addprefix $$@.,$(MODES))
 
 $(ANDROID_BUILDS): $(GYPFILES) $(ENVFILE) build/android.gypi \
                    must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN Makefile.android
         @$(MAKE) -f Makefile.android $@ \
                 ARCH="$(basename $@)" \
                 MODE="$(subst .,,$(suffix $@))" \
                 OUTDIR="$(OUTDIR)" \
                 GYPFLAGS="$(GYPFLAGS)"
 
+$(NACL_ARCHES): $(addprefix $$@.,$(MODES))
+
+$(NACL_BUILDS): $(GYPFILES) $(ENVFILE) \
+                   Makefile.nacl must-set-NACL_SDK_ROOT
+        @$(MAKE) -f Makefile.nacl $@ \
+                ARCH="$(basename $@)" \
+                MODE="$(subst .,,$(suffix $@))" \
+                OUTDIR="$(OUTDIR)" \
+                GYPFLAGS="$(GYPFLAGS)"
+
 # Test targets.
 check: all
         @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
             --arch=$(shell echo $(DEFAULT_ARCHES) | sed -e 's/ /,/g') \
             $(TESTFLAGS)
 
 $(addsuffix .check,$(MODES)): $$(basename $$@)
         @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
             --mode=$(basename $@) $(TESTFLAGS)
 
@@ skipping 11 matching lines @@
 
 $(addsuffix .check, $(ANDROID_BUILDS)): $$(basename $$@).sync
         @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
              --arch-and-mode=$(basename $@) \
              --timeout=600 \
              --command-prefix="tools/android-run.py"
 
 $(addsuffix .check, $(ANDROID_ARCHES)): \
                 $(addprefix $$(basename $$@).,$(MODES)).check
 
+$(addsuffix .check, $(NACL_BUILDS)): $$(basename $$@)
+        @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
+             --arch-and-mode=$(basename $@) \
+             --timeout=600 --nopresubmit \
+             --command-prefix="tools/nacl-run.py"
+
+$(addsuffix .check, $(NACL_ARCHES)): \
+                $(addprefix $$(basename $$@).,$(MODES)).check
+
 native.check: native
         @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR)/native \
             --arch-and-mode=. $(TESTFLAGS)
 
 # Clean targets. You can clean each architecture individually, or everything.
-$(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES)):
+$(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES) $(NACL_ARCHES)):
         rm -f $(OUTDIR)/Makefile.$(basename $@)
         rm -rf $(OUTDIR)/$(basename $@).release
         rm -rf $(OUTDIR)/$(basename $@).debug
         find $(OUTDIR) -regex '.*\(host\|target\).$(basename $@)\.mk' -delete
 
 native.clean:
         rm -f $(OUTDIR)/Makefile.native
         rm -rf $(OUTDIR)/native
         find $(OUTDIR) -regex '.*\(host\|target\).native\.mk' -delete
 
-clean: $(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES)) native.clean
+clean: $(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES) $(NACL_ARCHES)) native.clean
 
 # GYP file generation targets.
 OUT_MAKEFILES = $(addprefix $(OUTDIR)/Makefile.,$(ARCHES))
 $(OUT_MAKEFILES): $(GYPFILES) $(ENVFILE)
         GYP_GENERATORS=make \
         build/gyp/gyp --generator-output="$(OUTDIR)" build/all.gyp \
                       -Ibuild/standalone.gypi --depth=. \
                       -Dv8_target_arch=$(subst .,,$(suffix $@)) \
                       -S.$(subst .,,$(suffix $@)) $(GYPFLAGS)
 
 $(OUTDIR)/Makefile.native: $(GYPFILES) $(ENVFILE)
         GYP_GENERATORS=make \
         build/gyp/gyp --generator-output="$(OUTDIR)" build/all.gyp \
                       -Ibuild/standalone.gypi --depth=. -S.native $(GYPFLAGS)
 
 must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN:
 ifndef ANDROID_NDK_ROOT
 ifndef ANDROID_TOOLCHAIN
           $(error ANDROID_NDK_ROOT or ANDROID_TOOLCHAIN must be set))
 endif
 endif
 
+# Note that NACL_SDK_ROOT must be set to point to an appropriate
+# Native Client SDK before using this makefile. You can download
+# an SDK here:
+#   https://developers.google.com/native-client/sdk/download
+# The path indicated by NACL_SDK_ROOT will typically end with
+# a folder for a pepper version such as "pepper_25" that should
+# have "tools" and "toolchain" subdirectories.
+must-set-NACL_SDK_ROOT:
+ifndef NACL_SDK_ROOT
+          $(error NACL_SDK_ROOT must be set)
+endif
+
 # Replaces the old with the new environment file if they're different, which
 # will trigger GYP to regenerate Makefiles.
 $(ENVFILE): $(ENVFILE).new
         @if test -r $(ENVFILE) && cmp $(ENVFILE).new $(ENVFILE) >/dev/null; \
             then rm $(ENVFILE).new; \
             else mv $(ENVFILE).new $(ENVFILE); fi
 
 # Stores current GYPFLAGS in a file.
 $(ENVFILE).new:
         @mkdir -p $(OUTDIR); echo "GYPFLAGS=$(GYPFLAGS)" > $(ENVFILE).new; \
             echo "CXX=$(CXX)" >> $(ENVFILE).new
 
 # Dependencies.
 # Remember to keep these in sync with the DEPS file.
 dependencies:
         svn checkout --force http://gyp.googlecode.com/svn/trunk build/gyp \
             --revision 1501