--- a/make/CreateBuildJdkCopy.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,79 +0,0 @@
-#
-# Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.  Oracle designates this
-# particular file as subject to the "Classpath" exception as provided
-# by Oracle in the LICENSE file that accompanied this code.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
-
-default: all
-
-include $(SPEC)
-include MakeBase.gmk
-include Modules.gmk
-
-MODULES_TO_COPY := $(sort \
-    $(foreach m, jdk.jlink $(INTERIM_IMAGE_MODULES), \
-      $(call FindTransitiveDepsForModule, $m) $m))
-
-################################################################################
-# Copy the modules needed to run jlink and jmod. Use bulk copy instead of
-# SetupCopyFiles since there are so many files.
-
-COPY_CLASSES_TARGET := $(BUILDJDK_OUTPUTDIR)/jdk/modules/java.base/_the.buildjdk-copy-marker
-
-$(COPY_CLASSES_TARGET): $(call FindFiles, $(wildcard \
-    $(addprefix $(JDK_OUTPUTDIR)/modules/, $(MODULES_TO_COPY))))
-	$(call LogInfo, Copying java modules to buildjdk: $(MODULES_TO_COPY))
-	$(RM) -r $(BUILDJDK_OUTPUTDIR)/jdk/modules
-	$(MKDIR) -p $(BUILDJDK_OUTPUTDIR)/jdk/modules
-	$(foreach m, $(MODULES_TO_COPY), \
-	    $(CP) -R $(JDK_OUTPUTDIR)/modules/$m \
-	        $(BUILDJDK_OUTPUTDIR)/jdk/modules/ $(NEWLINE))
-	$(TOUCH) $@
-
-TARGETS += $(COPY_CLASSES_TARGET)
-
-################################################################################
-
-$(eval $(call SetupCopyFiles, COPY_SUPPORT_HEADERS, \
-    SRC := $(OUTPUTDIR), \
-    DEST := $(BUILDJDK_OUTPUTDIR), \
-    FILES := $(call FindFiles, $(wildcard \
-        $(addprefix $(SUPPORT_OUTPUTDIR)/headers/, $(MODULES_TO_COPY)))), \
-))
-
-TARGETS += $(COPY_SUPPORT_HEADERS)
-
-################################################################################
-
-$(eval $(call SetupCopyFiles, COPY_JDK_LIB_FILES, \
-    SRC := $(OUTPUTDIR), \
-    DEST := $(BUILDJDK_OUTPUTDIR), \
-    FILES := $(JDK_OUTPUTDIR)/lib/tzdb.dat, \
-))
-
-TARGETS += $(COPY_JDK_LIB_FILES)
-
-################################################################################
-
-all: $(TARGETS)
-
-.PHONY: default all

--- a/make/ExplodedImageOptimize.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/ExplodedImageOptimize.gmk	Fri Jun 07 09:16:11 2019 -0700
@@ -37,7 +37,7 @@
 ALL_MODULEINFO_CLASSES := $(wildcard $(JDK_OUTPUTDIR)/modules/*/module-info.class)
 
 $(eval $(call SetupExecute, optimize_image, \
-    INFO := Optimizing the exploded image, \
+    WARN := Optimizing the exploded image, \
     DEPS := $(ALL_MODULEINFO_CLASSES) $(BUILD_JIGSAW_CLASSES), \
     OUTPUT_DIR := $(JDK_OUTPUTDIR), \
     COMMAND := $(TOOL_ADD_PACKAGES_ATTRIBUTE) $(JDK_OUTPUTDIR), \

--- a/make/Main.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/Main.gmk	Fri Jun 07 09:16:11 2019 -0700
@@ -66,30 +66,26 @@
 ################################################################################
 # Interim/build tools targets, compiling tools used during the build
 
-# When creating a BUILDJDK, the buildtools and interim targets have already
-# been built and should not be built again.
-ifneq ($(CREATING_BUILDJDK), true)
-  buildtools-langtools:
+buildtools-langtools:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f ToolsLangtools.gmk)
 
-  interim-langtools:
+interim-langtools:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileInterimLangtools.gmk)
 
-  interim-rmic:
+interim-rmic:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileInterimRmic.gmk)
 
-  interim-cldrconverter:
+interim-cldrconverter:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CopyInterimCLDRConverter.gmk)
 
-  buildtools-jdk:
+buildtools-jdk:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileToolsJdk.gmk)
 
-  buildtools-modules:
+buildtools-modules:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileModuleTools.gmk)
 
-  buildtools-hotspot:
+buildtools-hotspot:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileToolsHotspot.gmk)
-endif
 
 ALL_TARGETS += buildtools-langtools interim-langtools \
     interim-rmic interim-cldrconverter buildtools-jdk buildtools-modules \
@@ -106,43 +102,39 @@
 ################################################################################
 # Gensrc targets, generating source before java compilation can be done
 #
-# When creating a BUILDJDK, the java targets have already been built and copied
-# into the buildjdk so no need to generate sources.
-ifneq ($(CREATING_BUILDJDK), true)
-  $(eval $(call DeclareRecipesForPhase, GENSRC, \
-      TARGET_SUFFIX := gensrc-src, \
-      FILE_PREFIX := Gensrc, \
-      MAKE_SUBDIR := gensrc, \
-      CHECK_MODULES := $(ALL_MODULES), \
-  ))
+$(eval $(call DeclareRecipesForPhase, GENSRC, \
+    TARGET_SUFFIX := gensrc-src, \
+    FILE_PREFIX := Gensrc, \
+    MAKE_SUBDIR := gensrc, \
+    CHECK_MODULES := $(ALL_MODULES), \
+))
 
-  $(foreach m, $(GENSRC_MODULES), $(eval $m-gensrc: $m-gensrc-src))
+$(foreach m, $(GENSRC_MODULES), $(eval $m-gensrc: $m-gensrc-src))
 
-  LANGTOOLS_GENSRC_TARGETS := $(filter $(addsuffix -%, $(LANGTOOLS_MODULES)), $(GENSRC_TARGETS))
-  INTERIM_LANGTOOLS_GENSRC_TARGETS := $(filter $(addsuffix -%, \
-      $(INTERIM_LANGTOOLS_BASE_MODULES)), $(GENSRC_TARGETS))
-  HOTSPOT_GENSRC_TARGETS := $(filter $(addsuffix -%, $(HOTSPOT_MODULES)), $(GENSRC_TARGETS))
-  JDK_GENSRC_TARGETS := $(filter-out $(LANGTOOLS_GENSRC_TARGETS) \
-      $(HOTSPOT_GENSRC_TARGETS), $(GENSRC_TARGETS))
+LANGTOOLS_GENSRC_TARGETS := $(filter $(addsuffix -%, $(LANGTOOLS_MODULES)), $(GENSRC_TARGETS))
+INTERIM_LANGTOOLS_GENSRC_TARGETS := $(filter $(addsuffix -%, \
+    $(INTERIM_LANGTOOLS_BASE_MODULES)), $(GENSRC_TARGETS))
+HOTSPOT_GENSRC_TARGETS := $(filter $(addsuffix -%, $(HOTSPOT_MODULES)), $(GENSRC_TARGETS))
+JDK_GENSRC_TARGETS := $(filter-out $(LANGTOOLS_GENSRC_TARGETS) \
+    $(HOTSPOT_GENSRC_TARGETS), $(GENSRC_TARGETS))
 
-  GENSRC_MODULEINFO_MODULES := $(ALL_MODULES)
-  GENSRC_MODULEINFO_TARGETS := $(addsuffix -gensrc-moduleinfo, \
-      $(GENSRC_MODULEINFO_MODULES))
+GENSRC_MODULEINFO_MODULES := $(ALL_MODULES)
+GENSRC_MODULEINFO_TARGETS := $(addsuffix -gensrc-moduleinfo, \
+    $(GENSRC_MODULEINFO_MODULES))
 
-  GENSRC_MODULES := $(GENSRC_MODULEINFO_MODULES)
-  GENSRC_TARGETS += $(sort $(GENSRC_MODULEINFO_TARGETS) \
-      $(addsuffix -gensrc, $(GENSRC_MODULES)))
+GENSRC_MODULES := $(GENSRC_MODULEINFO_MODULES)
+GENSRC_TARGETS += $(sort $(GENSRC_MODULEINFO_TARGETS) \
+    $(addsuffix -gensrc, $(GENSRC_MODULES)))
 
-  define DeclareModuleInfoRecipe
-    $1-gensrc-moduleinfo:
+define DeclareModuleInfoRecipe
+  $1-gensrc-moduleinfo:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) \
 	    -f GensrcModuleInfo.gmk MODULE=$1)
 
-    $1-gensrc: $1-gensrc-moduleinfo
-  endef
+  $1-gensrc: $1-gensrc-moduleinfo
+endef
 
-  $(foreach m, $(GENSRC_MODULEINFO_MODULES), $(eval $(call DeclareModuleInfoRecipe,$m)))
-endif
+$(foreach m, $(GENSRC_MODULEINFO_MODULES), $(eval $(call DeclareModuleInfoRecipe,$m)))
 
 ALL_TARGETS += $(GENSRC_TARGETS)
 
@@ -358,7 +350,7 @@
 	  $(call LogWarn, Boot cycle build step 2: Building a new JDK image using previously built image)
 	  $(call MakeDir, $(OUTPUTDIR)/bootcycle-build)
 	  +$(MAKE) $(MAKE_ARGS) -f $(TOPDIR)/make/Init.gmk PARALLEL_TARGETS=$(BOOTCYCLE_TARGET) \
-	      JOBS= SPEC=$(dir $(SPEC))bootcycle-spec.gmk main
+	      LOG_PREFIX="[bootcycle] " JOBS= SPEC=$(dir $(SPEC))bootcycle-spec.gmk main
         else
 	  $(call LogWarn, Boot cycle build disabled when cross compiling)
         endif
@@ -455,15 +447,18 @@
       java.base-copy jdk.jdeps-launchers
 endif
 
-create-buildjdk-copy:
-	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CreateBuildJdkCopy.gmk)
+BUILDJDK_MODULES := $(sort $(foreach m, jdk.jlink $(INTERIM_IMAGE_MODULES), \
+    $(call FindTransitiveDepsForModule, $m) $m))
 
 create-buildjdk-interim-image:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f Main.gmk \
 	    $@-helper \
 	    SPEC=$(dir $(SPEC))buildjdk-spec.gmk \
 	    HOTSPOT_SPEC=$(dir $(SPEC))buildjdk-spec.gmk \
-	    CREATING_BUILDJDK=true)
+	    CREATING_BUILDJDK=true \
+	    LOG_PREFIX="[buildjdk] " \
+	    JAVA_MODULES="$(BUILDJDK_MODULES)" \
+	)
 
 ALL_TARGETS += create-buildjdk-copy create-buildjdk-interim-image
 
@@ -695,7 +690,7 @@
   # The demos are currently linking to libjvm and libjava, just like all other
   # jdk libs, even though they don't need to. To avoid warnings, make sure they
   # aren't built until after libjava and libjvm are available to link to.
-  demos-jdk: java.base-libs exploded-image-optimize
+  demos-jdk: java.base-libs exploded-image
   test-image-demos-jdk: demos-jdk
 
   # Declare dependency from <module>-java to <module>-gensrc
@@ -711,11 +706,7 @@
 
   # Declare dependencies from <module>-lib to <module>-java
   # Skip modules that do not have java source.
-  # When creating a BUILDJDK, the java compilation has already been done by the
-  # normal build and copied in.
-  ifneq ($(CREATING_BUILDJDK), true)
-    $(foreach m, $(filter $(JAVA_MODULES), $(LIBS_MODULES)), $(eval $m-libs: $m-java))
-  endif
+  $(foreach m, $(filter $(JAVA_MODULES), $(LIBS_MODULES)), $(eval $m-libs: $m-java))
 
   # Declare dependencies from all other <module>-lib to java.base-lib
   $(foreach t, $(filter-out java.base-libs, $(LIBS_TARGETS)), \
@@ -753,7 +744,7 @@
 
   # Declare dependencies between jmod targets.
   # java.base jmod needs jrt-fs.jar and access to the other jmods to be built.
-  # When creating a BUILDJDK, we don't need to add hashes to java.base, thus
+  # When creating the BUILDJDK, we don't need to add hashes to java.base, thus
   # we don't need to depend on all other jmods
   ifneq ($(CREATING_BUILDJDK), true)
     java.base-jmod: jrtfs-jar $(filter-out java.base-jmod, $(JMOD_TARGETS))
@@ -766,11 +757,7 @@
   java.base-jmod: $(JVM_MAIN_TARGETS)
 
   # Declare dependencies from <module>-jmod to all other module targets
-  # When creating a BUILDJDK, the java compilation has already been done by the
-  # normal build and copied in.
-  ifneq ($(CREATING_BUILDJDK), true)
-    $(foreach m, $(JAVA_MODULES), $(eval $m_JMOD_DEPS += $m-java))
-  endif
+  $(foreach m, $(JAVA_MODULES), $(eval $m_JMOD_DEPS += $m-java))
   $(foreach m, $(GENDATA_MODULES), $(eval $m_JMOD_DEPS += $m-gendata))
   $(foreach m, $(RMIC_MODULES), $(eval $m_JMOD_DEPS += $m-rmic))
   $(foreach m, $(LIBS_MODULES), $(eval $m_JMOD_DEPS += $m-libs))
@@ -804,30 +791,28 @@
   # a normal build we run it from the exploded image, but when cross compiling
   # it's run from the buildjdk, which is either created at build time or user
   # supplied.
-  #
-  # For the exploded image to be runnable, all java modules and
-  # jdk.jlink-launchers need to be built. We also need to copy jvm.cfg (done
-  # in java.base-copy) and tzdb.dat (done in java.base-gendata) to the
-  # appropriate location otherwise jimage, jlink and jmod won't start. This
-  # also applies when creating the buildjdk.
-  DEFAULT_JMOD_DEPS += java.base-libs java.base-copy java.base-gendata \
-      jdk.jlink-launchers
-  # When cross compiling and buildjdk is to be created, depend on creating the
-  # buildjdk instead of the default dependencies.
   ifeq ($(CREATE_BUILDJDK), true)
-    # Avoid calling create-buildjdk from within a create-buildjdk call.
     ifneq ($(CREATING_BUILDJDK), true)
+      # When cross compiling and buildjdk is to be created, simply depend on
+      # creating the buildjdk.
       $(JMOD_TARGETS): create-buildjdk
       buildtools-modules: create-buildjdk
     else
-      # While actually creating the buildjdk, the default deps applies.
-      $(JMOD_TARGETS) $(INTERIM_JMOD_TARGETS): $(DEFAULT_JMOD_DEPS)
+      # While actually creating the buildjdk, we need to list the bare
+      # minimum dependencies needed before running jmod, to avoid building
+      # more than necessary. This includes:
+      # * all java modules
+      # * jdk.jlink-launchers
+      # * copy jvm.cfg (done in java.base-copy)
+      # * tzdb.dat (done in java.base-gendata)
+      # Without all of these jimage, jlink and jmod won't start.
+      $(JMOD_TARGETS) $(INTERIM_JMOD_TARGETS): java.base-libs java.base-copy \
+          java.base-gendata jdk.jlink-launchers java
     endif
   else
-    # The normal non cross compilation case uses the default deps.
-    # To avoid races with the optimize target, that also needs to happen first.
-    $(JMOD_TARGETS) $(INTERIM_JMOD_TARGETS): $(DEFAULT_JMOD_DEPS) \
-        exploded-image-optimize
+    # The normal non cross compilation case uses needs to wait for the full
+    # exploded-image to avoid a race with the optimize target.
+    $(JMOD_TARGETS) $(INTERIM_JMOD_TARGETS): exploded-image
   endif
 
   # All modules include the main license files from java.base.
@@ -915,14 +900,9 @@
   $(foreach t, $(filter-out test-make%, $(ALL_TEST_TARGETS)), $(eval $t: jdk-image test-image))
   $(foreach t, $(ALL_EXPLODED_TEST_TARGETS), $(eval $t: exploded-image test-image))
 
-  create-buildjdk-copy: jdk.jlink-java java.base-gendata \
-      $(addsuffix -java, $(INTERIM_IMAGE_MODULES))
-
-  create-buildjdk-interim-image: create-buildjdk-copy
-
   interim-image: $(INTERIM_JMOD_TARGETS)
 
-  build-test-lib: exploded-image-optimize
+  build-test-lib: exploded-image
 
   build-test-failure-handler: interim-langtools
 
@@ -933,7 +913,7 @@
 
   build-test-jdk-jtreg-native: buildtools-jdk java.base-libs
 
-  build-test-hotspot-jtreg-graal: exploded-image-optimize
+  build-test-hotspot-jtreg-graal: exploded-image
 
   test-image-hotspot-jtreg-native: build-test-hotspot-jtreg-native
 
@@ -1025,7 +1005,7 @@
   exploded-image: exploded-image-optimize
 endif
 
-create-buildjdk: create-buildjdk-copy create-buildjdk-interim-image
+create-buildjdk: create-buildjdk-interim-image
 
 docs-jdk-api: docs-jdk-api-javadoc
 docs-javase-api: docs-javase-api-javadoc

--- a/make/autoconf/buildjdk-spec.gmk.in	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/autoconf/buildjdk-spec.gmk.in	Fri Jun 07 09:16:11 2019 -0700
@@ -32,6 +32,9 @@
 
 CC := @BUILD_CC@
 CXX := @BUILD_CXX@
+# Ideally this should be probed by configure but that is tricky to implement,
+# and this should work in most cases.
+CPP := @BUILD_CC@ -E
 LD := @BUILD_LD@
 LDCXX := @BUILD_LDCXX@
 AS := @BUILD_AS@
@@ -44,6 +47,7 @@
 
 # These directories should not be moved to BUILDJDK_OUTPUTDIR
 HOTSPOT_OUTPUTDIR := $(patsubst $(OUTPUTDIR)%,$(BUILDJDK_OUTPUTDIR)%,$(HOTSPOT_OUTPUTDIR))
+BUILDTOOLS_OUTPUTDIR := $(patsubst $(OUTPUTDIR)%,$(BUILDJDK_OUTPUTDIR)%,$(BUILDTOOLS_OUTPUTDIR))
 SUPPORT_OUTPUTDIR := $(patsubst $(OUTPUTDIR)%,$(BUILDJDK_OUTPUTDIR)%,$(SUPPORT_OUTPUTDIR))
 JDK_OUTPUTDIR := $(patsubst $(OUTPUTDIR)%,$(BUILDJDK_OUTPUTDIR)%,$(JDK_OUTPUTDIR))
 IMAGES_OUTPUTDIR := $(patsubst $(OUTPUTDIR)%,$(BUILDJDK_OUTPUTDIR)%,$(IMAGES_OUTPUTDIR))
@@ -77,6 +81,8 @@
 
 FDLIBM_CFLAGS := @OPENJDK_BUILD_FDLIBM_CFLAGS@
 
+INTERIM_LANGTOOLS_ARGS := $(subst $(OUTPUTDIR),$(BUILDJDK_OUTPUTDIR),$(INTERIM_LANGTOOLS_ARGS))
+
 # The compiler for the build platform is likely not warning compatible with the official
 # compiler.
 WARNINGS_AS_ERRORS := false

--- a/make/common/MakeBase.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/common/MakeBase.gmk	Fri Jun 07 09:16:11 2019 -0700
@@ -160,25 +160,26 @@
     SHELL = $$(warning $$(if $$@,Building $$@,Running shell command) $$(if $$<, (from $$<))$$(if $$?, ($$(wordlist 1, 20, $$?) $$(if $$(wordlist 21, 22, $$?), ... [in total $$(words $$?) files]) newer)))$$(SHELL_NO_RECURSE) -x
   endif
 
+  # The LOG_PREFIX is set for sub recursive calls like buildjdk and bootcycle.
   # The warn level can never be turned off
-  LogWarn = $$(info $$(strip $$1))
+  LogWarn = $$(info $(LOG_PREFIX)$$(strip $$1))
   LOG_WARN :=
   ifneq ($$(findstring $$(LOG_LEVEL), info debug trace),)
-    LogInfo = $$(info $$(strip $$1))
+    LogInfo = $$(info $(LOG_PREFIX)$$(strip $$1))
     LOG_INFO :=
   else
     LogInfo =
     LOG_INFO := > /dev/null
   endif
   ifneq ($$(findstring $$(LOG_LEVEL), debug trace),)
-    LogDebug = $$(info $$(strip $$1))
+    LogDebug = $$(info $(LOG_PREFIX)$$(strip $$1))
     LOG_DEBUG :=
   else
     LogDebug =
     LOG_DEBUG := > /dev/null
   endif
   ifneq ($$(findstring $$(LOG_LEVEL), trace),)
-    LogTrace = $$(info $$(strip $$1))
+    LogTrace = $$(info $(LOG_PREFIX)$$(strip $$1))
     LOG_TRACE :=
   else
     LogTrace =

--- a/make/common/NativeCompilation.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/common/NativeCompilation.gmk	Fri Jun 07 09:16:11 2019 -0700
@@ -800,13 +800,13 @@
   # This is a rough heuristic and may not always print accurate information.
   $$($1_BUILD_INFO): $$($1_SRCS) $$($1_COMPILE_VARDEPS_FILE)
         ifeq ($$(wildcard $$($1_TARGET)), )
-	  $(ECHO) 'Creating $$(subst $$(OUTPUTDIR)/,,$$($1_TARGET)) from $$(words \
-	      $$(filter-out %.vardeps, $$?)) file(s)'
+	  $$(call LogWarn, Creating $$(subst $$(OUTPUTDIR)/,,$$($1_TARGET)) from $$(words \
+	      $$(filter-out %.vardeps, $$?)) file(s))
         else
-	  $(ECHO) $$(strip 'Updating $$(subst $$(OUTPUTDIR)/,,$$($1_TARGET))' \
+	  $$(call LogWarn, $$(strip Updating $$(subst $$(OUTPUTDIR)/,,$$($1_TARGET)) \
 	      $$(if $$(filter-out %.vardeps, $$?), \
-	        'due to $$(words $$(filter-out %.vardeps, $$?)) file(s)', \
-	      $$(if $$(filter %.vardeps, $$?), 'due to makefile changes')))
+	        due to $$(words $$(filter-out %.vardeps, $$?)) file(s), \
+	      $$(if $$(filter %.vardeps, $$?), due to makefile changes))))
         endif
 	$(TOUCH) $$@
 

--- a/make/gensrc/GensrcMisc.gmk	Wed Jun 05 16:53:52 2019 +0200
+++ b/make/gensrc/GensrcMisc.gmk	Fri Jun 07 09:16:11 2019 -0700
@@ -70,13 +70,15 @@
 # preprocessor.
 define generate-preproc-src
 	$(call MakeDir, $(@D))
-	( $(NAWK) '/@@END_COPYRIGHT@@/{exit}1' $< && \
-	  $(CPP) $(CPP_FLAGS) $(SYSROOT_CFLAGS) $(CFLAGS_JDKLIB) $< \
-	      2> >($(GREP) -v '^$(<F)$$' >&2) \
-	      | $(NAWK) '/@@START_HERE@@/,0' \
-	      |  $(SED) -e 's/@@START_HERE@@/\/\/ AUTOMATICALLY GENERATED FILE - DO NOT EDIT/' \
-	      -e 's/PREFIX_//' -e 's/^#.*//' \
-	) > $@
+	$(call ExecuteWithLog, $(SUPPORT_OUTPUTDIR)/gensrc/java.base/_$(@F), \
+	    ( $(NAWK) '/@@END_COPYRIGHT@@/{exit}1' $< && \
+	      $(CPP) $(CPP_FLAGS) $(SYSROOT_CFLAGS) $(CFLAGS_JDKLIB) $< \
+	          2> >($(GREP) -v '^$(<F)$$' >&2) \
+	          | $(NAWK) '/@@START_HERE@@/,0' \
+	          |  $(SED) -e 's/@@START_HERE@@/\/\/ AUTOMATICALLY GENERATED FILE - DO NOT EDIT/' \
+	          -e 's/PREFIX_//' -e 's/^#.*//' \
+	    ) > $@ \
+	)
 endef
 
 GENSRC_SOR_FILE += $(SUPPORT_OUTPUTDIR)/gensrc/java.base/sun/nio/ch/SocketOptionRegistry.java