1 #
   2 # Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4 #
   5 # This code is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License version 2 only, as
   7 # published by the Free Software Foundation.  Oracle designates this
   8 # particular file as subject to the "Classpath" exception as provided
   9 # by Oracle in the LICENSE file that accompanied this code.
  10 #
  11 # This code is distributed in the hope that it will be useful, but WITHOUT
  12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # version 2 for more details (a copy is included in the LICENSE file that
  15 # accompanied this code).
  16 #
  17 # You should have received a copy of the GNU General Public License version
  18 # 2 along with this work; if not, write to the Free Software Foundation,
  19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22 # or visit www.oracle.com if you need additional information or have any
  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 
  47 default: all
  48 
  49 include $(SPEC)
  50 include MakeBase.gmk
  51 include 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.
  56 TOOL_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.
  64 MOD_FILENAME := module-info.java.extra module-info.java.ext
  65 
  66 # Construct all possible src directories for the module.
  67 MODULE_CLASSES_DIRS := $(call FindModuleSrcDirs, $(MODULE))
  68 
  69 # Find all the .extra files in the src dirs.
  70 MOD_FILES := $(wildcard $(foreach f, $(MOD_FILENAME), $(addsuffix /$(f), \
  71     $(MODULE_CLASSES_DIRS))))
  72 
  73 ifneq ($(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 
 140 endif
 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.
 144 ifeq ($(MODIFICATIONS), )
 145   ifneq ($(wildcard $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java), )
 146     $(shell $(RM) $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java)
 147   endif
 148 endif
 149 
 150 ################################################################################
 151 
 152 all: $(TARGETS)