Introduce mkgrokdump to update tools/v8heapconst.py.

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 222 matching lines @@
 ifeq ($(no_omit_framepointer), on)
   GYPFLAGS += -Drelease_extra_cflags=-fno-omit-frame-pointer
 endif
 
 ifdef android_ndk_root
   GYPFLAGS += -Dandroid_ndk_root=$(android_ndk_root)
   export ANDROID_NDK_ROOT = $(android_ndk_root)
 endif
 
 # ----------------- available targets: --------------------
-# - "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"
 # - "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
 # - 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
@@ skipping 206 matching lines @@
             else mv $(ENVFILE).new $(ENVFILE); fi
 
 # Stores current GYPFLAGS in a file.
 $(ENVFILE).new:
         $(eval CXX_TARGET_ARCH:=$(shell $(CXX) -v 2>&1 | grep ^Target: | \
                 cut -f 2 -d " " | cut -f 1 -d "-" ))
         $(eval CXX_TARGET_ARCH:=$(subst aarch64,arm64,$(CXX_TARGET_ARCH)))
         $(eval CXX_TARGET_ARCH:=$(subst x86_64,x64,$(CXX_TARGET_ARCH)))
         @mkdir -p $(OUTDIR); echo "GYPFLAGS=$(GYPFLAGS) -Dtarget_arch=$(CXX_TARGET_ARCH)" > $(ENVFILE).new;
 
-# Heap constants for grokdump.
-DUMP_FILE = tools/v8heapconst.py
-grokdump: ia32.release
-        @cat $(DUMP_FILE).tmpl > $(DUMP_FILE)
-        @$(OUTDIR)/ia32.release/d8 --dump-heap-constants >> $(DUMP_FILE)
-
 # Support for the GNU GLOBAL Source Code Tag System.
 gtags.files: $(GYPFILES) $(ENVFILE)
         @find include src test -name '*.h' -o -name '*.cc' -o -name '*.c' > $@
 
 # We need to manually set the stack limit here, to work around bugs in
 # gmake-3.81 and global-5.7.1 on recent 64-bit Linux systems.
 # Using $(wildcard ...) gracefully ignores non-existing files, so that stale
 # gtags.files after switching branches don't cause recipe failures.
 GPATH GRTAGS GSYMS GTAGS: gtags.files $(wildcard $(shell cat gtags.files 2> /dev/null))
         @bash -c 'ulimit -s 10240 && GTAGSFORCECPP=yes gtags -i -q -f $<'
 
 gtags.clean:
         rm -f gtags.files GPATH GRTAGS GSYMS GTAGS
 
 tags: gtags.files $(wildcard $(shell cat gtags.files 2> /dev/null))
         @(ctags --version | grep 'Exuberant Ctags' >/dev/null) || \
                 (echo "Please install Exuberant Ctags (check 'ctags --version')" >&2; false)
         ctags --fields=+l -L $<
 
 tags.clean:
         rm -r tags
 
 dependencies builddeps:
         $(error Use 'gclient sync' instead)