Makefile.in - mozsearch

# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

STANDALONE_MAKEFILE := 1

include $(topsrcdir)/config/rules.mk

# Building XPIDLs effectively consists of two steps:

#   1) Staging all .idl files to a common directory.

#   2) Doing everything with the .idl files.

# Each .idl file is processed into a .h file and typelib information.

# The .h file shares the same stem as the input file and is installed

# in the common headers include directory.

# XPIDL files are logically grouped together by modules. The typelib

# information for all XPIDLs in the same module is linked together into

# an .xpt file having the name of the module.

# As an optimization to reduce overall CPU usage, we process all .idl

# belonging to a module with a single command invocation. This prevents

# redundant parsing of .idl files and significantly reduces CPU cycles.

# For dependency files.

idl_deps_dir := .deps

dist_idl_dir := $(DIST)/idl

dist_include_dir := $(DIST)/include

dist_xpcrs_dir := $(DIST)/xpcrs

stub_file := xptdata.stub

process_py := $(topsrcdir)/python/mozbuild/mozbuild/action/xpidl-process.py

target_file := $(topobjdir)/xpcom/reflect/xptinfo/xptdata.cpp

xptdata_h := $(dist_include_dir)/xptdata.h

generated_files := $(target_file) $(xptdata_h)

code_gen_py := $(topsrcdir)/xpcom/reflect/xptinfo/xptcodegen.py

code_gen_deps := $(topsrcdir)/xpcom/ds/tools/perfecthash.py

# TODO we should use py_action, but that would require extra directories to be

# in the virtualenv.

%.xpt:

	$(REPORT_BUILD)

	$(call BUILDSTATUS,START_xpt $@)

	$(PYTHON3) $(process_py) --depsdir $(idl_deps_dir) \

		--bindings-conf $(topsrcdir)/dom/bindings/Bindings.conf \

		$(foreach dir,$(all_idl_dirs),-I $(dir)) \

		$(dist_include_dir) $(dist_xpcrs_dir) $(@D) \

		$(basename $(notdir $@)) $($(basename $(notdir $@))_deps)

# When some IDL is added or removed, if the actual IDL file was already, or

# still is, in the tree, simple dependencies can't detect that the XPT needs

# to be rebuilt.

# Add the current value of $($(xpidl_module)_deps) in the depend file, such that

# we can later check if the value has changed since last build, which will

# indicate whether IDLs were added or removed.

# Note that removing previously built files is not covered.

	@echo $(basename $(notdir $@))_deps_built = $($(basename $(notdir $@))_deps) >> $(idl_deps_dir)/$(basename $(notdir $@)).pp

	$(call BUILDSTATUS,END_xpt $@)

xpidl_modules := @xpidl_modules@

xpt_files := $(addsuffix .xpt,$(xpidl_modules))

@xpidl_rules@

depends_files := $(foreach root,$(xpidl_modules),$(idl_deps_dir)/$(root).pp)

ifdef COMPILE_ENVIRONMENT

xpidl:: $(generated_files)

endif

# See bug 1420119 for why we need the semicolon.

$(target_file) $(xptdata_h) : $(stub_file) ;

$(xpt_files): $(process_py) $(call mkdir_deps,$(idl_deps_dir) $(dist_include_dir) $(dist_xpcrs_dir))

$(stub_file) : $(xpt_files) $(code_gen_py) $(code_gen_deps)

	$(REPORT_BUILD)

	$(call BUILDSTATUS,START_xpt $(notdir $(generated_files)))

	$(PYTHON3) $(code_gen_py) $(generated_files) $(xpt_files)

	@touch $@

	$(call BUILDSTATUS,END_xpt $(notdir $(generated_files)))

-include $(depends_files)

define xpt_deps

$(1): $(call mkdir_deps,$(dir $(1)))

ifneq ($($(basename $(notdir $(1)))_deps),$($(basename $(notdir $(1)))_deps_built))

$(1): FORCE

endif

endef

$(foreach xpt,$(xpt_files),$(eval $(call xpt_deps,$(xpt))))

.PHONY: xpidl