diff --git a/core/binary.mk b/core/binary.mk
index 491d94c..918a28d 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -791,6 +791,38 @@
 endif  # $(aidl_src) non-empty
 
 ###########################################################
+## Compile the .vts files to .cc (or .c) and then to .o
+###########################################################
+
+vts_src := $(strip $(filter %.vts,$(my_src_files)))
+vts_gen_cpp :=
+ifneq ($(vts_src),)
+
+# Use the intermediates directory to avoid writing our own .cpp -> .o rules.
+vts_gen_cpp_root := $(intermediates)/vts-generated/src
+vts_gen_include_root := $(intermediates)/vts-generated/include
+
+# Multi-architecture builds have distinct intermediates directories.
+# Thus we'll actually generate source for each architecture.
+$(foreach s,$(vts_src),\
+    $(eval $(call define-vts-cpp-rule,$(s),$(vts_gen_cpp_root),vts_gen_cpp)))
+$(foreach cpp,$(vts_gen_cpp), \
+    $(call include-depfile,$(addsuffix .vts.P,$(basename $(cpp))),$(cpp)))
+$(call track-src-file-gen,$(vts_src),$(vts_gen_cpp))
+
+$(vts_gen_cpp) : PRIVATE_MODULE := $(LOCAL_MODULE)
+$(vts_gen_cpp) : PRIVATE_HEADER_OUTPUT_DIR := $(vts_gen_include_root)
+$(vts_gen_cpp) : PRIVATE_VTS_FLAGS := $(addprefix -I,$(LOCAL_VTS_INCLUDES))
+
+# Add generated headers to include paths.
+my_c_includes += $(vts_gen_include_root)
+my_export_c_include_dirs += $(vts_gen_include_root)
+# Pick up the generated C++ files later for transformation to .o files.
+my_generated_sources += $(vts_gen_cpp)
+
+endif  # $(vts_src) non-empty
+
+###########################################################
 ## YACC: Compile .y/.yy files to .c/.cpp and then to .o.
 ###########################################################
 
@@ -1392,7 +1424,7 @@
 # Similarly, the generated DBus headers need to exist before we export their location.
 # People are not going to consume the aidl generated cpp file, but the cpp file is
 # generated after the headers, so this is a convenient way to ensure the headers exist.
-$(export_includes) : $(LOCAL_MODULE_MAKEFILE_DEP) $(proto_generated_headers) $(dbus_generated_headers) $(aidl_gen_cpp)
+$(export_includes) : $(LOCAL_MODULE_MAKEFILE_DEP) $(proto_generated_headers) $(dbus_generated_headers) $(aidl_gen_cpp) $(vts_gen_cpp)
 	@echo Export includes file: $< -- $@
 	$(hide) mkdir -p $(dir $@) && rm -f $@.tmp
 ifdef my_export_c_include_dirs
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 7473a73..59e907b 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -105,6 +105,7 @@
 LOCAL_RES_LIBRARIES:=
 LOCAL_MANIFEST_INSTRUMENTATION_FOR:=
 LOCAL_AIDL_INCLUDES:=
+LOCAL_VTS_INCLUDES:=
 LOCAL_JARJAR_RULES:=
 LOCAL_ADDITIONAL_JAVA_DIR:=
 LOCAL_ALLOW_UNDEFINED_SYMBOLS:=
@@ -142,6 +143,7 @@
 LOCAL_PROTOC_OPTIMIZE_TYPE:= # lite(default),micro,nano,full,nanopb-c,nanopb-c-enable_malloc
 LOCAL_PROTOC_FLAGS:=
 LOCAL_PROTO_JAVA_OUTPUT_PARAMS:=
+LOCAL_VTSC_FLAGS:=
 LOCAL_NO_CRT:=
 LOCAL_NO_LIBGCC:=
 LOCAL_PROPRIETARY_MODULE:=
diff --git a/core/config.mk b/core/config.mk
index c892995..94c880f 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -519,6 +519,7 @@
 BREAKPAD_GENERATE_SYMBOLS := false
 endif
 PROTOC := $(HOST_OUT_EXECUTABLES)/aprotoc$(HOST_EXECUTABLE_SUFFIX)
+VTSC := $(HOST_OUT_EXECUTABLES)/vtsc$(HOST_EXECUTABLE_SUFFIX)
 DBUS_GENERATOR := $(HOST_OUT_EXECUTABLES)/dbus-binding-generator
 MKBOOTFS := $(HOST_OUT_EXECUTABLES)/mkbootfs$(HOST_EXECUTABLE_SUFFIX)
 MINIGZIP := $(HOST_OUT_EXECUTABLES)/minigzip$(HOST_EXECUTABLE_SUFFIX)
diff --git a/core/definitions.mk b/core/definitions.mk
index 9aca9fd..34b9385 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -320,6 +320,24 @@
 endef
 
 ###########################################################
+## Find all files named "*.vts" under the named directories,
+## which must be relative to $(LOCAL_PATH).  The returned list
+## is relative to $(LOCAL_PATH).
+###########################################################
+
+define all-vts-files-under
+$(call all-named-files-under,*.vts,$(1))
+endef
+
+###########################################################
+## Find all of the "*.vts" files under $(LOCAL_PATH).
+###########################################################
+
+define all-subdir-vts-files
+$(call all-vts-files-under,.)
+endef
+
+###########################################################
 ## Find all of the logtags files under the named directories.
 ## Meant to be used like:
 ##    SRC_FILES := $(call all-logtags-files-under,src)
@@ -1087,6 +1105,31 @@
 endef
 
 ###########################################################
+## Commands for running vts
+###########################################################
+
+define transform-vts-to-cpp
+@mkdir -p $(dir $@)
+@mkdir -p $(PRIVATE_HEADER_OUTPUT_DIR)
+@echo "Generating C++ from VTS: $(PRIVATE_MODULE) <= $<"
+$(hide) $(VTSC) -d$(basename $@).vts.P $(PRIVATE_VTS_FLAGS) \
+    $< $(PRIVATE_HEADER_OUTPUT_DIR) $@
+endef
+
+## Given a .vts file path generate the rule to compile it a .cpp file.
+# $(1): a .vts source file
+# $(2): a directory to place the generated .cpp files in
+# $(3): name of a variable to add the path to the generated source file to
+#
+# You must call this with $(eval).
+define define-vts-cpp-rule
+define-vts-cpp-rule-src := $(patsubst %.vts,%$(LOCAL_CPP_EXTENSION),$(subst ../,dotdot/,$(addprefix $(2)/,$(1))))
+$$(define-vts-cpp-rule-src) : $(LOCAL_PATH)/$(1) $(VTSC)
+	$$(transform-vts-to-cpp)
+$(3) += $$(define-vts-cpp-rule-src)
+endef
+
+###########################################################
 ## Commands for running java-event-log-tags.py
 ###########################################################
 
diff --git a/envsetup.sh b/envsetup.sh
index 8153224..35df2d5 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -1132,7 +1132,7 @@
     Darwin)
         function sgrep()
         {
-            find -E . -name .repo -prune -o -name .git -prune -o  -type f -iregex '.*\.(c|h|cc|cpp|S|java|xml|sh|mk|aidl)' \
+            find -E . -name .repo -prune -o -name .git -prune -o  -type f -iregex '.*\.(c|h|cc|cpp|S|java|xml|sh|mk|aidl|vts)' \
                 -exec grep --color -n "$@" {} +
         }
 
@@ -1140,7 +1140,7 @@
     *)
         function sgrep()
         {
-            find . -name .repo -prune -o -name .git -prune -o  -type f -iregex '.*\.\(c\|h\|cc\|cpp\|S\|java\|xml\|sh\|mk\|aidl\)' \
+            find . -name .repo -prune -o -name .git -prune -o  -type f -iregex '.*\.\(c\|h\|cc\|cpp\|S\|java\|xml\|sh\|mk\|aidl\|vts\)' \
                 -exec grep --color -n "$@" {} +
         }
         ;;