Add "native" target to Makefile for the benefit of Linux distros

Makefile

Index: Makefile
diff --git a/Makefile b/Makefile
index a7b27317a3ad37d026b5f611ed55cc7dadcc4880..ab4fe646875a077e67db8cf0aa108977c46e9055 100644
--- a/Makefile
+++ b/Makefile
@@ -78,6 +78,7 @@ endif
 # - 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"
 # - default (no target specified): build all ARCHES and MODES
 # - "check": build all targets and run all tests
@@ -103,7 +104,7 @@ CHECKS = $(addsuffix .check,$(BUILDS))
 # File where previously used GYPFLAGS are stored.
 ENVFILE = $(OUTDIR)/environment
 
-.PHONY: all check clean dependencies $(ENVFILE).new \
+.PHONY: all check clean dependencies $(ENVFILE).new native \
         $(ARCHES) $(MODES) $(BUILDS) $(CHECKS) $(addsuffix .clean,$(ARCHES)) \
         $(addsuffix .check,$(MODES)) $(addsuffix .check,$(ARCHES))
 
@@ -124,6 +125,11 @@ $(BUILDS): $(OUTDIR)/Makefile-$$(basename $$@)
 	                     python -c "print raw_input().capitalize()") \
 	         builddir="$(shell pwd)/$(OUTDIR)/$@"
 
+native: $(OUTDIR)/Makefile-native
+	@$(MAKE) -C "$(OUTDIR)" -f Makefile-native \
+	         CXX="$(CXX)" LINK="$(LINK)" BUILDTYPE=Release \
+	         builddir="$(shell pwd)/$(OUTDIR)/$@"
+
 # Test targets.
 check: all
 	@tools/test-wrapper-gypbuild.py $(TESTJOBS) --outdir=$(OUTDIR)
@@ -140,6 +146,10 @@ $(CHECKS): $$(basename $$@)
 	@tools/test-wrapper-gypbuild.py $(TESTJOBS) --outdir=$(OUTDIR) \
 	    --arch-and-mode=$(basename $@)
 
+native.check: native
+	@tools/test-wrapper-gypbuild.py $(TESTJOBS) --outdir=$(OUTDIR)/native \
+	    --arch-and-mode=.
+
 # Clean targets. You can clean each architecture individually, or everything.
 $(addsuffix .clean,$(ARCHES)):
 	rm -f $(OUTDIR)/Makefile-$(basename $@)
@@ -147,7 +157,12 @@ $(addsuffix .clean,$(ARCHES)):
 	rm -rf $(OUTDIR)/$(basename $@).debug
 	find $(OUTDIR) -regex '.*\(host\|target\)-$(basename $@)\.mk' -delete
 
-clean: $(addsuffix .clean,$(ARCHES))
+native.clean:
+	rm -f $(OUTDIR)/Makefile-native
+	rm -rf $(OUTDIR)/native
+	find $(OUTDIR) -regex '.*\(host\|target\)-native\.mk' -delete
+
+clean: $(addsuffix .clean,$(ARCHES)) native.clean
 
 # GYP file generation targets.
 $(OUTDIR)/Makefile-ia32: $(GYPFILES) $(ENVFILE)
@@ -165,6 +180,10 @@ $(OUTDIR)/Makefile-arm: $(GYPFILES) $(ENVFILE)
 	              -Ibuild/standalone.gypi --depth=. -Ibuild/armu.gypi \
 	              -S-arm $(GYPFLAGS)
 
+$(OUTDIR)/Makefile-native: $(GYPFILES) $(ENVFILE)
+	build/gyp/gyp --generator-output="$(OUTDIR)" build/all.gyp \
+	              -Ibuild/standalone.gypi --depth=. -S-native $(GYPFLAGS)
+
 # Replaces the old with the new environment file if they're different, which
 # will trigger GYP to regenerate Makefiles.
 $(ENVFILE): $(ENVFILE).new