SourceRevision.gmk revision 2342:61d55f2ba01e 
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25
26default: all
27
28include $(SPEC)
29include MakeBase.gmk
30
31################################################################################
32# Keep track of what source revision is used to create the build, by creating
33# a tracker file in the output directory. This tracker file is included in the
34# image, and can be used to recreate the source revision used.
35#
36# We're either building directly from a mercurial forest, and if so, use the
37# current revision from mercurial. Otherwise, we are building from a source
38# bundle. As a part of creating this source bundle, the current mercurial
39# revisions of all repos will be stored in a file in the top dir, which is then
40# used when creating the tracker file.
41
42STORED_SOURCE_REVISION := $(TOPDIR)/.src-rev
43
44# Are we using mercurial?
45ifneq ($(and $(HG), $(wildcard $(TOPDIR)/.hg)), )
46
47  # Verify that the entire forest is consistent
48  $(foreach repo, $(call FindAllReposRel), \
49    $(if $(wildcard $(TOPDIR)/$(repo)/.hg),, \
50        $(error Inconsistent revision control: $(repo) is missing .hg directory)) \
51  )
52
53  # Replace "." with "_top" and "/" with "-"
54  MakeFilenameFromRepo = \
55      $(strip $(subst .,top, $(subst /,-, $1)))
56
57  ################################################################################
58  # SetupGetRevisionForRepo defines a make rule for creating a file containing
59  # the name of the repository and the output of "hg id" for that repository.
60  # Argument 1 is the relative path to the repository from the top dir.
61  #
62  SetupGetRevisionForRepo = $(NamedParamsMacroTemplate)
63  define SetupGetRevisionForRepoBody
64    $1_REPO_PATH :=  $$(TOPDIR)/$$(strip $1)
65    $1_FILENAME := $$(call MakeFilenameFromRepo, $1)
66
67    $$(SUPPORT_OUTPUTDIR)/src-rev/$$($1_FILENAME): FRC
68	$(call MakeDir $$(@D))
69	$(ECHO) $$(strip $1):`$(HG) id -i --repository $$($1_REPO_PATH)` > $$@
70
71    REPO_REVISIONS += $$(SUPPORT_OUTPUTDIR)/src-rev/$$($1_FILENAME)
72  endef
73
74  # Setup rules for all repos. This makes sure all the "hg id" calls are made
75  # in parallel.
76  $(foreach repo, $(call FindAllReposRel), \
77    $(eval $(call SetupGetRevisionForRepo, $(repo))) \
78  )
79
80  # Create a complete source revision output file from all repos
81  # Param 1: The output file
82  define CreateSourceRevisionFile
83    $1: $$(REPO_REVISIONS)
84	$(call MakeDir $$(@D))
85	$$(ECHO) `$$(CAT) $$(REPO_REVISIONS)` > $$@.tmp
86	if [ ! -f $$@ ] || [ "`$$(CAT) $$@`" != "`$$(CAT) $$@.tmp`" ]; then \
87	  $$(MV) $$@.tmp $$@ ; \
88	else \
89	  $$(RM) $$@.tmp ; \
90	fi
91  endef
92
93  $(eval $(call CreateSourceRevisionFile, $(STORED_SOURCE_REVISION)))
94
95  store-source-revision: $(STORED_SOURCE_REVISION)
96
97  $(eval $(call CreateSourceRevisionFile, $(SOURCE_REVISION_TRACKER)))
98
99  create-source-revision-tracker: $(SOURCE_REVISION_TRACKER)
100
101else
102  # Not using HG
103
104  ifneq ($(wildcard $(STORED_SOURCE_REVISION)), )
105    # We have a stored source revision (.src-rev)
106
107    store-source-revision:
108	$(call LogWarn, Warning: No mercurial configuration present, not updating .src-rev)
109
110    $(SOURCE_REVISION_TRACKER): $(STORED_SOURCE_REVISION)
111	$(install-file)
112
113    create-source-revision-tracker: $(SOURCE_REVISION_TRACKER)
114  else
115    # We don't have a stored source revision. Can't do anything, really.
116
117    store-source-revision:
118	$(call LogWarn, Error: No mercurial configuration present, cannot create .src-rev)
119	exit 2
120
121    create-source-revision-tracker:
122	$(call LogWarn, Error: No mercurial configuration present and no .src-rev)
123	exit 2
124  endif
125
126endif
127
128all: store-source-revision create-source-revision-tracker
129
130FRC: # Force target
131
132.PHONY: all store-source-revision create-source-revision-tracker
133