GensrcModuleInfo.gmk revision 2119:a420707436c6 
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3# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4#
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20#
21# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23# questions.
24#
25
26################################################################################
27# This file makes modifications to module-info.java files based on the build
28# configuration.
29#
30# Depending on build platform, imported modules and optional parts of the build
31# being active, some modules need to have extra exports, provides or uses
32# declarations added to them. These optional extras are defined in .extra files:
33#
34# src/<module>/<share,platform>/classes/module-info.java.extra
35#
36# The contents of the .extra files are simply extra lines that could fit into
37# the module-info file.
38#
39# This makefile is called once for each from-module with the variable
40# MODULE naming the from-module.
41#
42# The modified module-info.java files are put in the gensrc directory where
43# they will automatically override the static versions in the src tree.
44#
45################################################################################
46
47default: all
48
49include $(SPEC)
50include MakeBase.gmk
51include Modules.gmk
52
53################################################################################
54# Define this here since jdk/make/Tools.gmk cannot be included from the top
55# make directory. Should probably move some tools away from the jdk repo.
56TOOL_GENMODULEINFOSOURCE = $(JAVA_SMALL) \
57    $(INTERIM_LANGTOOLS_ARGS) \
58    -cp "$(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes" \
59    build.tools.module.GenModuleInfoSource
60
61################################################################################
62
63# Name of data file. Keep module-info.java.ext until javafx has changed.
64MOD_FILENAME := module-info.java.extra module-info.java.ext
65
66# Construct all possible src directories for the module.
67MODULE_CLASSES_DIRS := $(call FindModuleSrcDirs, $(MODULE))
68
69# Find all the .extra files in the src dirs.
70MOD_FILES := $(wildcard $(foreach f, $(MOD_FILENAME), $(addsuffix /$(f), \
71    $(MODULE_CLASSES_DIRS))))
72
73ifneq ($(MOD_FILES), )
74  # Only make this call if modification files are found for this module
75  ALL_MODULES := $(call FindAllModules)
76
77  # Read the contents of all the files into a variable. Replace space with / to
78  # let space represent new lines in the variable as $(shell) normalizes all
79  # whitespace.
80  $(foreach f, $(MOD_FILES), \
81    $(eval MOD_FILE_CONTENTS += $(shell $(GREP) -v -e ".\*" -e "//" $f | $(TR) ' ' '/')))
82
83  # Separate the modifications into qualified exports and the rest
84  MODS_QUALIFIED_EXPORTS := $(call containing, /to/, $(MOD_FILE_CONTENTS))
85  MODS_REST := $(filter-out $(MODS_QUALIFIED_EXPORTS), $(MOD_FILE_CONTENTS))
86
87  # Filter the contents for modules that are actually being built
88  ALL_MODULES_FILTER := $(addprefix %/, $(addsuffix ;, $(ALL_MODULES)))
89  MODIFICATIONS := $(filter $(ALL_MODULES_FILTER), $(MODS_QUALIFIED_EXPORTS)) \
90      $(MODS_REST)
91
92  # Returns non empty if the package exists in the current module
93  # Param 1 - Name of package with dots
94  PackageExists = \
95      $(strip $(wildcard $(addsuffix $(subst .,/,/$(strip $1)), \
96          $(MODULE_CLASSES_DIRS) \
97          $(addsuffix /$(MODULE), $(IMPORT_MODULES_CLASSES)) \
98          $(JDK_OUTPUTDIR)/modules/$(MODULE) \
99      )))
100
101  # Convert the modification lines into arguments for the modification tool.
102  # Filter out modifications for non existing to-modules.
103  $(foreach line, $(MODIFICATIONS), \
104    $(eval split_line := $(subst /,$(SPACE),$(line))) \
105    $(eval command := $(word 1, $(split_line))) \
106    $(if $(filter $(command), exports), \
107      $(eval package := $(patsubst %;,%,$(word 2, $(split_line)))) \
108      $(if $(call PackageExists, $(package)), \
109        $(eval to_module := $(patsubst %;,%,$(word 4, $(split_line)))) \
110        $(if $(to_module), \
111          $(eval ARGS += -$(command) $(package)/$(to_module)) \
112        , \
113          $(eval ARGS += -$(command) $(package)) \
114        ) \
115      ) \
116    , \
117      $(if $(filter $(command), provides), \
118        $(eval provider := $(patsubst %;,%,$(word 2, $(split_line)))) \
119        $(eval class := $(patsubst %;,%,$(word 4, $(split_line)))) \
120        $(eval ARGS += -$(command) $(provider)/$(class)) \
121      , \
122        $(error A module-info.extra in $(MODULE) contains invalid command $(command)) \
123      ) \
124    ) \
125  )
126
127  ifneq ($(ARGS), )
128    $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java: \
129        $(firstword $(call FindAllModuleInfos, $(MODULE))) \
130        $(BUILD_TOOLS_JDK) \
131        $(call DependOnVariable, ARGS)
132		$(MKDIR) -p $(@D)
133		$(RM) $@ $@.tmp
134		$(TOOL_GENMODULEINFOSOURCE) $(ARGS) -o $@.tmp $<
135		$(MV) $@.tmp $@
136
137    TARGETS += $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java
138  endif
139
140endif
141
142# If no modifications are found for this module, remove any module-info.java
143# created by a previous build since that is no longer valid.
144ifeq ($(MODIFICATIONS), )
145  ifneq ($(wildcard $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java), )
146    $(shell $(RM) $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java)
147  endif
148endif
149
150################################################################################
151
152all: $(TARGETS)
153