make/SourceRevision.gmk
author hseigel
Tue, 26 Jul 2016 08:23:25 -0400
changeset 43178 6fb98b21d035
parent 42848 27ad8b2418f7
child 47217 72e3ae9a25eb
permissions -rw-r--r--
8161218: Better bytecode loading Reviewed-by: acorn, mschoene, ctornqvi Contributed-by: harold.seigel@oracle.com
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#
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# Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation.  Oracle designates this
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# particular file as subject to the "Classpath" exception as provided
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# by Oracle in the LICENSE file that accompanied this code.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
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default: all
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include $(SPEC)
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include MakeBase.gmk
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################################################################################
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# Keep track of what source revision is used to create the build, by creating
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# a tracker file in the output directory. This tracker file is included in the
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# image, and can be used to recreate the source revision used.
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#
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# We're either building directly from a mercurial forest, and if so, use the
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# current revision from mercurial. Otherwise, we are building from a source
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# bundle. As a part of creating this source bundle, the current mercurial
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# revisions of all repos will be stored in a file in the top dir, which is then
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# used when creating the tracker file.
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STORED_SOURCE_REVISION := $(TOPDIR)/.src-rev
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# Are we using mercurial?
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ifneq ($(and $(HG), $(wildcard $(TOPDIR)/.hg)), )
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  # Verify that the entire forest is consistent
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  $(foreach repo, $(call FindAllReposRel), \
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    $(if $(wildcard $(TOPDIR)/$(repo)/.hg),, \
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        $(error Inconsistent revision control: $(repo) is missing .hg directory)) \
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  )
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  # Replace "." with "_top" and "/" with "-"
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  MakeFilenameFromRepo = \
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      $(strip $(subst .,top, $(subst /,-, $1)))
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  ################################################################################
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  # SetupGetRevisionForRepo defines a make rule for creating a file containing
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  # the name of the repository and the output of "hg id" for that repository.
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  # Argument 1 is the relative path to the repository from the top dir.
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  #
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  SetupGetRevisionForRepo = $(NamedParamsMacroTemplate)
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  define SetupGetRevisionForRepoBody
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    $1_REPO_PATH :=  $$(TOPDIR)/$$(strip $1)
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    $1_FILENAME := $$(call MakeFilenameFromRepo, $1)
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    $$(SUPPORT_OUTPUTDIR)/src-rev/$$($1_FILENAME): FRC
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	$$(call MakeDir, $$(@D))
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	$$(ECHO) $$(strip $1):`$$(HG) id -i --repository $$($1_REPO_PATH)` > $$@
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    REPO_REVISIONS += $$(SUPPORT_OUTPUTDIR)/src-rev/$$($1_FILENAME)
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  endef
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  # Setup rules for all repos. This makes sure all the "hg id" calls are made
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  # in parallel.
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  $(foreach repo, $(call FindAllReposRel), \
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    $(eval $(call SetupGetRevisionForRepo, $(repo))) \
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  )
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  # Create a complete source revision output file from all repos
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  # Param 1: The output file
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  define CreateSourceRevisionFile
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    $1: $$(REPO_REVISIONS)
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	$$(call MakeDir, $$(@D))
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	$$(ECHO) `$$(CAT) $$(REPO_REVISIONS)` > $$@.tmp
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	if [ ! -f $$@ ] || [ "`$$(CAT) $$@`" != "`$$(CAT) $$@.tmp`" ]; then \
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	  $$(MV) $$@.tmp $$@ ; \
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	else \
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	  $$(RM) $$@.tmp ; \
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	fi
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  endef
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  $(eval $(call CreateSourceRevisionFile, $(STORED_SOURCE_REVISION)))
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  store-source-revision: $(STORED_SOURCE_REVISION)
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  $(eval $(call CreateSourceRevisionFile, $(SOURCE_REVISION_TRACKER)))
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  create-source-revision-tracker: $(SOURCE_REVISION_TRACKER)
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else
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  # Not using HG
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  ifneq ($(wildcard $(STORED_SOURCE_REVISION)), )
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    # We have a stored source revision (.src-rev)
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    store-source-revision:
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	$(call LogInfo, No mercurial configuration present$(COMMA) not updating .src-rev)
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    $(SOURCE_REVISION_TRACKER): $(STORED_SOURCE_REVISION)
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	$(install-file)
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    create-source-revision-tracker: $(SOURCE_REVISION_TRACKER)
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  else
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    # We don't have a stored source revision. Can't do anything, really.
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    store-source-revision:
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	$(call LogWarn, Error: No mercurial configuration present$(COMMA) cannot create .src-rev)
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	exit 2
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    create-source-revision-tracker:
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	$(call LogWarn, Warning: No mercurial configuration present and no .src-rev)
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  endif
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endif
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all: store-source-revision create-source-revision-tracker
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FRC: # Force target
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.PHONY: all store-source-revision create-source-revision-tracker