Generate grokdump constants with 'make grokdump' now.

Makefile

Index: Makefile
diff --git a/Makefile b/Makefile
index 499f6cb08e0da487557bc88b05318ae6fae70346..98dd70489bcd4f552c36e8824204bdf68639487a 100644
--- a/Makefile
+++ b/Makefile
@@ -192,6 +192,7 @@ endif
 
 # ----------------- available targets: --------------------
 # - "dependencies": pulls in external dependencies (currently: GYP)
+# - "grokdump": rebuilds heap constants lists used by grokdump
 # - any arch listed in ARCHES (see below)
 # - any mode listed in MODES
 # - every combination <arch>.<mode>, e.g. "ia32.release"
@@ -401,6 +402,12 @@ $(ENVFILE).new:
 	@mkdir -p $(OUTDIR); echo "GYPFLAGS=$(GYPFLAGS)" > $(ENVFILE).new; \
 	    echo "CXX=$(CXX)" >> $(ENVFILE).new
 
+# Heap constants for grokdump.
+DUMP_FILE = tools/v8heapconst.py
+grokdump: ia32.release
+	@cat $(DUMP_FILE).tmpl >$(DUMP_FILE)

[Sven Panne, 2013/08/02 08:51:02]

Nit: A space between ">" and "$" makes things more readable. Same below.
Otherwise things look a bit like automatic variables
http://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html :-)

[Michael Starzinger, 2013/08/02 08:59:31]

Done. Also a few lines above.

+	@$(OUTDIR)/ia32.release/d8 --dump-heap-constants >>$(DUMP_FILE)
+
 # Dependencies.
 # Remember to keep these in sync with the DEPS file.
 dependencies: