Inside Bitcoin

251	mkdir -p $$(@D) $(SOURCES_PATH)
252	rm -f $$@
253	cd $$(@D); $($(1)_fetch_cmds)
254	cd $($(1)_source_dir); $(foreach source,$($(1)_all_sources),$(build_SHA256SUM) $(source) >> $$(@);)
255	touch $$@
256$($(1)_extracted): | $($(1)_fetched)
257	echo Extracting $(1)...
258	mkdir -p $$(@D)
259	cd $$(@D); $($(1)_extract_cmds)
260	touch $$@
261$($(1)_preprocessed): | $($(1)_extracted)
262	echo Preprocessing $(1)...
263	mkdir -p $$(@D) $($(1)_patch_dir)
264	$(foreach patch,$($(1)_patches),cd $($(1)_patches_path); cp $(patch) $($(1)_patch_dir) ;)
265	{ cd $$(@D); $($(1)_preprocess_cmds); } $$($(1)_logging)
266	touch $$@
267$($(1)_configured): | $($(1)_dependencies) $($(1)_preprocessed)
268	echo Configuring $(1)...
269	rm -rf $(host_prefix); mkdir -p $(host_prefix)/lib; cd $(host_prefix); $(foreach package,$($(1)_all_dependencies), $(build_TAR) --no-same-owner -xf $($(package)_cached); )
270	mkdir -p $$($(1)_build_dir)
271	+{ cd $$($(1)_build_dir); export $($(1)_config_env); $($(1)_config_cmds); } $$($(1)_logging)
272	touch $$@
273$($(1)_built): | $($(1)_configured)
274	echo Building $(1)...
275	mkdir -p $$(@D)
276	+{ cd $$(@D); export $($(1)_build_env); $($(1)_build_cmds); } $$($(1)_logging)
277	touch $$@
278$($(1)_staged): | $($(1)_built)
279	echo Staging $(1)...
280	mkdir -p $($(1)_staging_dir)/$(host_prefix)
281	+{ cd $($(1)_build_dir); export $($(1)_stage_env); $($(1)_stage_cmds); } $$($(1)_logging)
282	rm -rf $($(1)_extract_dir)
283	touch $$@
284$($(1)_postprocessed): | $($(1)_staged)
285	echo Postprocessing $(1)...
286	cd $($(1)_staging_prefix_dir); $($(1)_postprocess_cmds)
287	touch $$@
288$($(1)_cached): | $($(1)_dependencies) $($(1)_postprocessed)
289	echo Caching $(1)...
290	cd $$($(1)_staging_dir)/$(host_prefix); \
291	  find . ! -name '.stamp_postprocessed' -print0 | TZ=UTC xargs -0r $(build_TOUCH); \
292	  find . ! -name '.stamp_postprocessed' | LC_ALL=C sort | $(build_TAR) --numeric-owner --no-recursion -czf $$($(1)_staging_dir)/$$(@F) -T -
293	mkdir -p $$(@D)
294	rm -rf $$(@D) && mkdir -p $$(@D)
295	mv $$($(1)_staging_dir)/$$(@F) $$(@)
296	rm -rf $($(1)_staging_dir)
297	if test -f $($(1)_build_log); then mv $($(1)_build_log) $$(@D); fi
298$($(1)_cached_checksum): $($(1)_cached)
299	cd $$(@D); $(build_SHA256SUM) $$(<F) > $$(@)
300
301.PHONY: $(1)
302$(1): | $($(1)_cached_checksum)
303.SECONDARY: $($(1)_cached) $($(1)_postprocessed) $($(1)_staged) $($(1)_built) $($(1)_configured) $($(1)_preprocessed) $($(1)_extracted) $($(1)_fetched)
304
305endef
306
307stages = fetched extracted preprocessed configured built staged postprocessed cached cached_checksum
308
309define ext_add_stages
310$(foreach stage,$(stages),
311          $(1)_$(stage): $($(1)_$(stage))
312          .PHONY: $(1)_$(stage))
313endef
314
315# These functions create the build targets for each package. They must be
316# broken down into small steps so that each part is done for all packages
317# before moving on to the next step. Otherwise, a package's info
318# (build-id for example) would only be available to another package if it
319# happened to be computed already.
320
321#set the type for host/build packages.
322$(foreach native_package,$(native_packages),$(eval $(native_package)_type=build))
323$(foreach package,$(packages),$(eval $(package)_type=$(host_arch)_$(host_os)))
324
325#set overridable defaults
326$(foreach package,$(all_packages),$(eval $(call int_vars,$(package))))
327
328#include package files
329$(foreach native_package,$(native_packages),$(eval include packages/$(native_package).mk))
330$(foreach package,$(packages),$(eval include packages/$(package).mk))
331
332#set build properties for included package files
333$(foreach package,$(all_packages),$(eval $(call int_get_build_properties,$(package))))
334
335#compute a hash of all files that comprise this package's build recipe
336$(foreach package,$(all_packages),$(eval $(call int_get_build_recipe_hash,$(package))))
337
338#generate a unique id for this package, incorporating its dependencies as well
339$(foreach package,$(all_packages),$(eval $(call int_get_build_id,$(package))))
340
341#compute final vars after reading package vars
342$(foreach package,$(all_packages),$(eval $(call int_config_attach_build_config,$(package))))
343
344#create build targets
345$(foreach package,$(all_packages),$(eval $(call int_add_cmds,$(package))))
346