####################################################################### # # Copyright (c) 2020 Broadcom, Inc. # The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. # # Author: Kalimuthu Velappan # Greg Paussa # # Email : kalimuthu.velappan@broadcom.com # greg.paussa@broadcom.com # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # ####################################################################### # # # DPKG caching framework # # SONiC source code composes of multiple open source modules. Eg: Linux, bash, ntp etc. # Each module considered as a build target in the sonic build framework. # Each module gets compiled and generate the final debian package(.deb) file. # There are two types of source code packages used by the SONiC repo. # # 1. Module source code is maintained as part of main repo # Eg: sonic-utilities, Plaform files etc # # Some module source code is maintained outside the sonic repo, but # the build framework is part of sonic main repo. # The build framework downloads the zipped source content from the web, # applies a series of patches (if applicable) on the downloaded source code, # compiles the source and generates the final .deb package(s). # Eg: bash, ntp, etc # # 2. Module source code is maintained as a submodule(SM) in the sonic repo. # Eg: Frr, swss, Linux etc # # # The sonic build framework uses the module .deb packages that are generated as part of build and # creates the set of target docker images and the final binary image for distribution. # # The caching framework provides the method to cache the module .deb packages and docker images # into a cache location by tracking module dependency information. # # A module can have a set of dependency files, for example Makefiles, source files, scripts, dpkg control files, etc. # The caching is done based on the SHA hash value of the module dependency file contents. If one of the # dependency files is changed, the corresponding cache file is also changed. So it automatically creates the new cache file # for that module. # # It provides two levels of caching. # Global cache := Module doesnt have any local changes. # Local cache := Used for target when one of its dependency file is modified. # # # Steps for adding new module is given as a template. # Template File : rules/template.dep # # Common files and FLAGS # Run the 'touch cache.skip.common' command in the base directory to exclude the common files from caching SONIC_COMMON_FILES_LIST := $(if $(wildcard cache.skip.common),, .platform slave.mk rules/functions Makefile.cache) SONIC_COMMON_FLAGS_LIST := $(CONFIGURED_PLATFORM) \ $(SONIC_DPKG_CACHE_SOURCE) $(SONIC_DEBUGGING_ON) \ $(SONIC_PROFILING_ON) $(SONIC_ENABLE_SYNCD_RPC) SONIC_COMMON_DPKG_LIST := debian/control debian/changelog debian/rules \ debian/compat debian/install debian/copyright SONIC_COMMON_BASE_FILES_LIST := sonic-slave-jessie/Dockerfile.j2 sonic-slave-jessie/Dockerfile.user \ sonic-slave-stretch/Dockerfile.j2 sonic-slave-stretch/Dockerfile.user include $(RULES_PATH)/*.dep ifneq ($(CONFIGURED_PLATFORM), undefined) ifeq ($(PDDF_SUPPORT), y) include $(PLATFORM_PDDF_PATH)/rules.dep endif -include $(PLATFORM_PATH)/rules.dep endif $(info "SONIC_DPKG_CACHE_METHOD" : "$(SONIC_DPKG_CACHE_METHOD)") ifneq ($(SONIC_DPKG_CACHE_METHOD),none) $(info "DPKG_CACHE_PATH" : "$(SONIC_DPKG_CACHE_SOURCE)") endif $(info ) ############################################################################### ## Canned sequences ############################################################################### SONIC_DPKG_CACHE_DIR := /dpkg_cache MOD_CACHE_LOCK_SUFFIX := cache_access MOD_CACHE_LOCK_TIMEOUT := 3600 SONIC_DPKG_LOCAL_CACHE_DIR=${TARGET_PATH}/cache $(shell test -d $(SONIC_DPKG_LOCAL_CACHE_DIR) || \ mkdir -p $(SONIC_DPKG_LOCAL_CACHE_DIR) && chmod 777 $(SONIC_DPKG_LOCAL_CACHE_DIR) ) $(shell test -w $(SONIC_DPKG_CACHE_DIR) || sudo chmod 777 $(SONIC_DPKG_CACHE_DIR) ) DOCKER_LOCKFILE_SUFFIX := access DOCKER_LOCKFILE_TIMEOUT := 1200 # Lock macro for shared file access # Lock is implemented through flock command with a specified timeout value # Lock file is created in the specified directory, a separate one for each target file name # A designated suffix is appended to each target file name, followed by .lock # # Parameters: # $(1) - target file name (without path) # $(2) - lock file path (only) # $(3) - designated lock file suffix # $(4) - flock timeout (in seconds) # # $(call MOD_LOCK,file,path,suffix,timeout) define MOD_LOCK if [[ ! -f $(2)/$(1)_$(3).lock ]]; then touch $(2)/$(1)_$(3).lock chmod 777 $(2)/$(1)_$(3).lock; fi $(eval $(1)_lock_fd=$(subst ~,_,$(subst -,_,$(subst +,_,$(subst .,_,$(1)))))) exec {$($(1)_lock_fd)}<>"$(2)/$(1)_$(3).lock"; if ! flock -x -w $(4) "$${$($(1)_lock_fd)}" ; then echo "ERROR: Lock timeout trying to access $(2)/$(1)_$(3).lock"; exit 1; fi endef # UnLock macro for shared file access # # Parameters: # $(1) - target file name (without path) # # $(call MOD_UNLOCK,file) define MOD_UNLOCK eval exec "$${$($(1)_lock_fd)}<&-"; endef # Calculate the 24 byte SHA value # GIT_COMMIT_SHA => SHA is derived from last git commit ID # GIT_CONTENT_SHA => SHA is derived from contents of depdency files # Args: # $(1) => target name define GET_MOD_SHA $(eval $(1)_MOD_DEP_FILES := $($(1)_DEP_FLAGS_FILE) $($(1)_MOD_HASH_FILE) $($(1)_SMOD_HASH_FILE) ) $(if $(MDEBUG), $(info $(1)_MOD_DEP_FILES: $($(1)_MOD_DEP_FILES))) $(eval $(1)_MOD_HASH := $(if $(filter GIT_COMMIT_SHA,$($(1)_CACHE_MODE)),\ $(shell cd $($(1)_MOD_SRC_PATH) && git log -1 --format="%H"| awk '{print substr($$1,0,23);}' ),\ $(shell git hash-object $($(1)_MOD_DEP_FILES)| \ sha1sum | awk '{print substr($$1,0,23);}'))) endef # Calculate the 24 byte SHA value # SHA value is derived from dependent files of the target which includes .flags, .sha and .smsha files. # Args: # $(1) => target name define GET_MOD_DEP_SHA $(eval $(1)_MOD_DEP_PKGS := $(foreach dfile,$($(1)_DEPENDS) $($(1)_RDEPENDS) $($(1)_WHEEL_DEPENDS) \ $($(1)_PYTHON_DEBS) $($(1)_PYTHON_WHEELS) \ $($(1)_DBG_DEPENDS) $($(1)_DBG_IMAGE_PACKAGES) $($(1)_LOAD_DOCKERS),\ $(if $($(dfile)_MAIN_DEB),$($(dfile)_MAIN_DEB),$(dfile))) ) $(if $(MDEBUG), $(info $(1)_MOD_DEP_PKGS: $($(1)_MOD_DEP_PKGS))) $(eval $(1)_DEP_MOD_SHA := $(shell git hash-object \ $(foreach dfile,$($(1)_MOD_DEP_PKGS), $($(dfile)_DEP_FLAGS_FILE) $($(dfile)_MOD_HASH_FILE) $($(dfile)_SMOD_HASH_FILE) ) \ | sha1sum | awk '{print substr($$1,0,23);}')) endef # Retrive the list of files that are modified for the target. The files can be from # 1. Any of dependent target is modified # 2. Files from the target dependency list # 3. Files from submodule dependency list if the target is a submodule # # Args: # $(1) => target name define GET_MODIFIED_FILES $(eval $(1)_FILES_MODIFIED := $(foreach dfile,$($(1)_MOD_DEP_PKGS),$(if $($(dfile)_FILES_MODIFIED),$(dfile))) \ $(if $($(1)_DEP_FILES), $(shell cat $($(1)_MOD_DEP_FILE) | xargs git status -s)) \ $(if $($(1)_SMDEP_PATHS), $(foreach path,$($(1)_SMDEP_PATHS), \ $(shell cd $(path) && git status --ignore-submodules=all -s -uno .))) ) endef # Loads the deb package from debian cache # Cache file prefix is formed using SHA value # The SHA value consists of # 1. 24 byte SHA value is derived from the dependency files list # Flags: Module ENV flags file # Dependent packages : DEPENDS, RDEPENDS, WHEEL_DEPENDS, PYTHON_DEBS, PYTHON_WHEELS, DBG_DEPENDS, DBG_IMAGE_PACKAGES, LOAD_DOCKERS # 2. 24 byte SHA value from one of the keyword type - GIT_COMMIT_SHA or GIT_CONTENT_SHA # GIT_COMMIT_SHA - SHA value of the last git commit id if it is a submodule # GIT_CONTENT_SHA - SHA value is calculated from the target dependency files content. # Cache is loaded from either local cache or global cache based on the dependency SHA match with the cache filename. # Otherwise it builds the package from source. # TODO: # 1. Extend dpkg for all the chip vendor packages. # Args: # $(1) => target name # $(2) => target output file name define LOAD_FROM_CACHE # Calculate the modules SHA and its dependency SHA value $(call GET_MOD_DEP_SHA,$(1)) $(call GET_MOD_SHA,$(1)) # Form the cache file name $(eval $(1)_MOD_CACHE_FILE := $(1)-$($(1)_DEP_MOD_SHA)-$($(1)_MOD_HASH).tgz) $(if $(MDEBUG), $(info $(1)_MODE_CACHE_FILE := $($(1)_MOD_CACHE_FILE))) # Retrive and log files list that are modified for the target. $(call GET_MODIFIED_FILES,$(1)) $(if $($(1)_FILES_MODIFIED), echo "Target $(1) dependencies are modifed - global cache skipped" >> $($(1)_DST_PATH)/$(1).log echo "Modified dependencies are : [$($(1)_FILES_MODIFIED)] " >> $($(1)_DST_PATH)/$(1).log $(eval $(1)_CACHE_DIR := $(SONIC_DPKG_LOCAL_CACHE_DIR))) # Choose the cache file path in the following order # 1. First load from Local cache path # 2. If not, load from global cache path $(eval CACHE_FILE_SELECT:=$(or $(wildcard $(SONIC_DPKG_LOCAL_CACHE_DIR)/$($(1)_MOD_CACHE_FILE)), \ $(wildcard $(SONIC_DPKG_CACHE_DIR)/$($(1)_MOD_CACHE_FILE))) ) # Check if any of the derived package is not built $(eval LOAD_DRV_DEB := $(foreach pkg,$(addprefix $($(1)_DST_PATH)/,$(1) $($(1)_DERIVED_DEBS) $($(1)_EXTRA_DEBS)),$(if $(wildcard $(pkg)),,$(pkg)))) # Load the cache if cache is enabled and cache file is present in the cache # Update the cache_loaded variable $(if $(and $(CACHE_FILE_SELECT),$(filter $(RCACHE_OPTIONS),$(SONIC_DPKG_CACHE_METHOD))), $(if $(LOAD_DRV_DEB), $($(1)_CACHE_USER) tar -C $($(1)_BASE_PATH) -mxzvf $(CACHE_FILE_SELECT) 1>> $($(1)_DST_PATH)/$(1).log ,echo ); echo "File $(CACHE_FILE_SELECT) is loaded from cache" >> $($(1)_DST_PATH)/$(1).log $(eval $(1)_CACHE_LOADED := Yes) $(shell touch $(CACHE_FILE_SELECT)) echo "[ CACHE::LOADED ] $($(1)_CACHE_DIR)/$($(1)_MOD_CACHE_FILE)" >> $($(1)_DST_PATH)/$(1).log , echo "File $($(1)_CACHE_DIR)/$($(1)_MOD_CACHE_FILE) is not present in cache or cache mode set as $(SONIC_DPKG_CACHE_METHOD) !" >> $($(1)_DST_PATH)/$(1).log echo "[ CACHE::SKIPPED ] $($(1)_CACHE_DIR)/$($(1)_MOD_CACHE_FILE)" >> $($(1)_DST_PATH)/$(1).log echo "[ CACHE::SKIPPED ] DEP_FILES - Modified Files: [$($(1)_FILES_MODIFIED)] " >> $($(1)_DST_PATH)/$(1).log echo "[ CACHE::SKIPPED ] DEPENDS - Modified Files: [$?] " >> $($(1)_DST_PATH)/$(1).log ) endef # Saves the deb package into debian cache # A single tared-zip cache is created for .deb and its derived packages in the cache direcory. # It saves the .deb into global cache only when its dependencies are not changed, # Otherwise it saves the .deb into local cache # The cache save is protected with lock. # Args: # $(1) => target name # $(2) => target output file name define SAVE_INTO_CACHE # Calculate the modules SHA and its dependency SHA value $(call GET_MOD_DEP_SHA,$(1)) $(call GET_MOD_SHA,$(1)) # Form the cache file name $(eval $(1)_MOD_CACHE_FILE := $(1)-$($(1)_DEP_MOD_SHA)-$($(1)_MOD_HASH).tgz) $(if $(MDEBUG), $(info $(1)_MOD_CACHE_FILE := $($(1)_MOD_CACHE_FILE))) # Retrive and log files list that are modified for the target. $(call GET_MODIFIED_FILES,$(1)) $(eval MOD_CACHE_FILE=$($(1)_MOD_CACHE_FILE)) $(call MOD_LOCK,$(1),$(SONIC_DPKG_CACHE_DIR),$(MOD_CACHE_LOCK_SUFFIX),$(MOD_CACHE_LOCK_TIMEOUT)) $(if $($(1)_FILES_MODIFIED), echo "Target $(1) dependencies are modifed - global save cache skipped" >> $($(1)_DST_PATH)/$(1).log $(eval $(1)_CACHE_DIR := $(SONIC_DPKG_LOCAL_CACHE_DIR)) ) $($(1)_CACHE_USER) tar -C $($(1)_BASE_PATH) -mczvf $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) $(2) $(addprefix $($(1)_DST_PATH)/,$($(1)_DERIVED_DEBS) $($(1)_EXTRA_DEBS) ) \ 1>>$($(1)_DST_PATH)/$(1).log sudo chmod 777 $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) echo "File $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) saved in cache " >> $($(1)_DST_PATH)/$(1).log echo "[ CACHE::SAVED ] $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE)" >> $($(1)_DST_PATH)/$(1).log $(call MOD_UNLOCK,$(1)) endef # Read from the cache RCACHE_OPTIONS := cache rcache rwcache define CHECK_RCACHE_ENABLED $(if $(and $(filter $(RCACHE_OPTIONS),$(SONIC_DPKG_CACHE_METHOD)),$(filter-out none,$($(1)_CACHE_MODE))),enabled) endef # Write into the cache WCACHE_OPTIONS := cache wcache rwcache define CHECK_WCACHE_ENABLED $(if $(and $(filter $(WCACHE_OPTIONS),$(SONIC_DPKG_CACHE_METHOD)),$(filter-out none,$($(1)_CACHE_MODE))),enabled) endef # It logs the reason why the target is getting built/rebuilt # Args: # $(1) => target name define SHOW_WHY @echo "[ REASON ] :\ $(if $(filter $(PHONY),$@), it is phony,\ $(eval $(1)_PREREQ_PHONY:= $(filter $(PHONY),$^))\ $(eval $(1)_PREREQ_DNE:= $(filter-out $(wildcard $^) $($(1)_PREREQ_PHONY),$^))\ $(eval $(1)_PREREQ_NEW:= $(filter-out $($(1)_PREREQ_DNE),$?))\ $(if $(wildcard $@),$(if $($(1)_PREREQ_NEW), NEWER PREREQUISITES: $($(1)_PREREQ_NEW)), $@ does not exist)\ $(if $($(1)_PREREQ_DNE), NON-EXISTENT PREREQUISITES: $($(1)_PREREQ_DNE))\ $(if $($(1)_PREREQ_PHONY), PHONY PREREQUISITES: $($(1)_PREREQ_PHONY)))" >> $($(1)_DST_PATH)/$(1).log @echo "[ FLAGS FILE ] : [$($(1)_FILE_FLAGS)] " >> $($(1)_DST_PATH)/$(1).log @echo "[ FLAGS DEPENDS ] : [$($(1)_DEP_FLAGS)] " >> $($(1)_DST_PATH)/$(1).log @echo "[ FLAGS DIFF ] : [$($(1)_FLAGS_DIFF)] " >> $($(1)_DST_PATH)/$(1).log @echo "[ DEP DEPENDS ] : [$($(1)_DEP_FILES_MODIFIED)] " >> $($(1)_DST_PATH)/$(1).log @echo "[ SMDEP DEPENDS ] : [$($(1)_SMDEP_FILES_MODIFIED)] " >> $($(1)_DST_PATH)/$(1).log @echo "[ TARGET DEPENDS ] : [$?] " >> $($(1)_DST_PATH)/$(1).log endef # It invokes the Load Cache macro if cache is enabled globally as well as per module level # Args: # $(1) => target name # $(2) => target output file name define LOAD_CACHE $(call SHOW_WHY,$(1)) $(if $(call CHECK_RCACHE_ENABLED,$(1)), $(call LOAD_FROM_CACHE,$(1),$(2)) ) endef # It invokes the Save Cache if cache is enabled globally as well as per module level # Args: # $(1) => target name # $(2) => target output file name define SAVE_CACHE $(if $(call CHECK_WCACHE_ENABLED,$(1)), $(call SAVE_INTO_CACHE,$(1),$(2))) endef # Set the target path for each target. $(foreach pkg, $(SONIC_MAKE_DEBS) $(SONIC_DPKG_DEBS) $(SONIC_ONLINE_DEBS) $(SONIC_COPY_DEBS), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(DEBS_PATH))) \ $(eval $(DEBS_PATH)/$(pkg)_TARGET := $(pkg)) ) $(foreach pkg, $(SONIC_MAKE_FILES), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(FILES_PATH))) \ $(eval $(FILES_PATH)/$(pkg)_TARGET := $(pkg)) ) $(foreach pkg, $(SONIC_PYTHON_STDEB_DEBS), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(PYTHON_DEBS_PATH))) \ $(eval $(PYTHON_DEBS_PATH)/$(pkg)_TARGET := $(pkg)) ) $(foreach pkg, $(SONIC_PYTHON_WHEELS), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(PYTHON_WHEELS_PATH))) \ $(eval $(PYTHON_WHEELS_PATH)/$(pkg)_TARGET := $(pkg)) ) $(foreach pkg, $(SONIC_DOCKER_IMAGES) $(SONIC_DOCKER_DBG_IMAGES), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(TARGET_PATH))) \ $(eval $(TARGET_PATH)/$(pkg)_TARGET := $(pkg)) ) $(foreach pkg, $(SONIC_INSTALL_PKGS), \ $(eval $(pkg)_DST_PATH := $(if $($(pkg)_DST_PATH), $($(pkg)_DST_PATH), $(FSROOT_PATH))) \ $(eval $(FSROOT_PATH)/$(pkg)_TARGET := $(pkg)) ) # define the DEP files(.dep and .smdep) and SHA files (.sha and smsha) for each target $(foreach pkg, $(SONIC_MAKE_DEBS) $(SONIC_DPKG_DEBS) $(SONIC_ONLINE_DEBS) $(SONIC_COPY_DEBS) \ $(SONIC_MAKE_FILES) $(SONIC_PYTHON_STDEB_DEBS) $(SONIC_PYTHON_WHEELS) \ $(SONIC_DOCKER_IMAGES) $(SONIC_DOCKER_DBG_IMAGES) $(SONIC_INSTALL_PKGS), \ $(eval $(pkg)_MOD_SRC_PATH:=$(if $($(pkg)_SRC_PATH),$($(pkg)_SRC_PATH),$($(pkg)_PATH))) \ $(eval $(pkg)_BASE_PATH:=$(if $($(pkg)_BASE_PATH),$($(pkg)_BASE_PATH),$(CURDIR))) \ $(eval $(pkg)_DEP_FLAGS_FILE:=$($(pkg)_DST_PATH)/$(pkg).flags) \ $(eval $(pkg)_MOD_DEP_FILE:=$($(pkg)_DST_PATH)/$(pkg).dep) \ $(eval $(pkg)_MOD_HASH_FILE:=$($(pkg)_DST_PATH)/$(pkg).dep.sha) \ $(eval $(pkg)_SMOD_DEP_FILE:=$(if $($(pkg)_SMDEP_FILES),$($(pkg)_DST_PATH)/$(pkg).smdep)) \ $(eval $(pkg)_SMOD_HASH_FILE:=$(if $($(pkg)_SMDEP_FILES),$($(pkg)_DST_PATH)/$(pkg).smdep.smsha)) \ $(eval $(pkg)_DEP_FILES_LIST := $($(pkg)_DEP_FLAGS_FILE) $($(pkg)_DEP_FILES) $($(pkg)_SMDEP_FILES)) \ $(eval $(pkg)_CACHE_DIR := $(SONIC_DPKG_CACHE_DIR)) \ $(if $(filter-out none,$(SONIC_DPKG_CACHE_METHOD)), \ $(if $(filter-out none,$($(pkg)_CACHE_MODE)), \ $(if $($(pkg)_SMDEP_FILES), \ $(if $($(pkg)_SMDEP_PATHS),,$(info Missing PATH/SRC_PATH attribute for $(pkg) package)) \ ),\ $(info [ DPKG ] Cache is not enabled for $(pkg) package)\ )\ ) \ ) # DPGK framework creates three dependency files for each target. # 1. Flags file (.flags) # 2. Dependency file (.dep), # 3. Dependecy SHA hash file (.sha) # 4. If the target is a submodule, corresponding dependency file and hash file are created # sub module dependency file (.smdep) # sub module hash file (.smsha) # For example: following are the cache framework files for bash module # target/debs/stretch/bash_4.3-14_amd64.deb => Final debian package # target/debs/stretch/bash_4.3-14_amd64.deb.flags => Environment Flag file # target/debs/stretch/bash_4.3-14_amd64.deb.dep => Dependency files list # target/debs/stretch/bash_4.3-14_amd64.deb.dep.sha => SHA Hash file # # # [1] .flags => contains value of all the environment variables of a target. # Each target can have dependency with one or more environment variable. # For example: # SONIC_DEBUGGING_ON=y # SONIC_PROFILING_ON=y # SONIC_SANITIZER_ON=y # etc # If any of the ENV flag variables are modified, the target needs to be rebuilt as # the content of flag file is changed becase of value of ENV variable is changed. # # [2] .dep => contains the dependency files list for a target. Eeach traget can have one or more dependency files. # If any of the ENV flag variables are modified, the target needs to be rebuilt. # For example: Dependency files list for 'bash' module # rules/bash.mk # rules/bash.dep # src/bash/Makefile # etc # # [3] .sha => contains the 48 byte SHA value for each dependency file present in the .dep file. # For example: # 9604676527653dcf7b6046fdda7ba52026b7f56f rules/bash.mk # 191c345c1270776b3902c9ec91d5e777e0b5e2a3 rules/bash.dep # 55692fe59303554b5958b04aa62c3651bc34bb6a src/bash/Makefile # etc # # If module target is a sub module in the sonic repo, the following additional files gets created for that target. # .smdep => contains the dependency files list # .smsha => contains the SHA hash value for .smdep files list. # ruiles for <.flags> file creation # # Each target defines a variable called '_DEP_FLAGS' that contais a list of environment flags for that target and # that indicates that target needs to be rebuilt if any of the dependent flags are changed. # An environmental dependency flags file is created with the name as ‘.flags’ for each target. # This file contains the values of target environment flags and gets updated only when there is a change in the flag's value. # This file is added as a dependency to the target, so that any change in the file will trigger the target recompilation. # For Eg: # target/debs/stretch/linux-headers-4.9.0-9-2-common_4.9.168-1+deb9u3_all.deb.flags # # RULE args: # $(1) => target name # $(2) => target destination folder path # $(3) => target file extension # # It updates the _DEP_FLAGS variable if there is any change in the module flags. define FLAGS_DEP_RULES ALL_DEP_FILES_LIST += $(foreach pkg,$(2), $(if $(filter none,$($(1)_CACHE_MODE)),$(addsuffix .$(3),$(addprefix $(pkg)/, $(1))))) $(addsuffix .$(3),$(addprefix $(2)/, $(1))) :: $(2)/%.$(3) : @$$(eval $$*_FILE_FLAGS := $$(shell test -f $$@ && cat $$@)) @echo '$$($$*_DEP_FLAGS)' | cmp -s - $$@ || echo '$$($$*_DEP_FLAGS)' > $$@ $$(eval $$*_FLAGS_DIFF := $$(filter-out $$($$*_FILE_FLAGS),$$($$*_DEP_FLAGS)) $$(filter-out $$($$*_DEP_FLAGS),$$($$*_FILE_FLAGS))) @$$(if $$(MDEBUG), $$(info FLAGS: $$@, DEP:$$?)) endef $(eval $(call FLAGS_DEP_RULES, $(SONIC_MAKE_DEBS) $(SONIC_DPKG_DEBS) $(SONIC_ONLINE_DEBS) $(SONIC_COPY_DEBS), $(DEBS_PATH),flags) ) $(eval $(call FLAGS_DEP_RULES, $(SONIC_MAKE_FILES), $(FILES_PATH),flags)) $(eval $(call FLAGS_DEP_RULES, $(SONIC_PYTHON_STDEB_DEBS), $(PYTHON_DEBS_PATH),flags)) $(eval $(call FLAGS_DEP_RULES, $(SONIC_PYTHON_WHEELS), $(PYTHON_WHEELS_PATH),flags)) $(eval $(call FLAGS_DEP_RULES, $(SONIC_DOCKER_IMAGES) $(SONIC_DOCKER_DBG_IMAGES), $(TARGET_PATH),flags)) $(eval $(call FLAGS_DEP_RULES, $(SONIC_INSTALL_PKGS), $(FSROOT_PATH),flags)) # rules for <.smdep> and <.smsha> file creation # This rule creates two dependency files for a target if the target is a submodule # [1] .smdep file # Each module target defines a variable called '_SMDEP_FILES' that contains the list of sub module dependency files for the target. # Contents of the '_SMDEP_FILES' variable is stored in this file # # [2] .smsha file # The SHA hash (.smsha) file is created from 48 byte SHA value for each of the dependency files present in the .smdep file # # The target needs to be rebuilt if any of the dependent flags are changed. # The submodule dependency file is created with the name as '.smdep' and the SHA hash file created as '.smdep.smsha'. # This file is added as a dependency to the target, so that any change in the file will trigger the target recompilation. # For Eg: # target/debs/stretch/linux-headers-4.9.0-9-2-common_4.9.168-1+deb9u3_all.deb.smdep # target/debs/stretch/linux-headers-4.9.0-9-2-common_4.9.168-1+deb9u3_all.deb.smdep.smsha # # RULE args: # $(1) => target name # $(2) => target destination folder path # $(3) => target file extension define SMSHA_DEP_RULES ALL_DEP_FILES_LIST += $(foreach pkg,$(2), $($(filter none,$($(1)_CACHE_MODE)), \ $(addsuffix .$(3),$(addprefix $(pkg)/, $(1))) \ $(addsuffix .$(3).smsha,$(addprefix $(pkg)/, $(1))))) $(addsuffix .$(3),$(addprefix $(2)/, $(1))) : $(2)/%.$(3) : \ $(2)/%.flags $$$$($$$$*_SMDEP_FILES) @$$(eval $$*_SMDEP_FILES_MODIFIED := $$? ) @$$(file >$$@,$$(patsubst $$($$*_MOD_SRC_PATH)/%,%,$$($$*_SMDEP_FILES))) @( cd $$($$*_MOD_SRC_PATH) ; cat $$($$*_BASE_PATH)/$$@ |xargs git hash-object ) >$$@.smsha @$$(if $$(MDEBUG), $$(info SMDEP:$$@, MOD:$$?)) endef $(eval $(call SMSHA_DEP_RULES, $(SONIC_MAKE_DEBS) $(SONIC_DPKG_DEBS) $(SONIC_ONLINE_DEBS) $(SONIC_COPY_DEBS), $(DEBS_PATH),smdep)) $(eval $(call SMSHA_DEP_RULES, $(SONIC_MAKE_FILES), $(FILES_PATH),smdep)) $(eval $(call SMSHA_DEP_RULES, $(SONIC_PYTHON_STDEB_DEBS), $(PYTHON_DEBS_PATH),smdep)) $(eval $(call SMSHA_DEP_RULES, $(SONIC_PYTHON_WHEELS), $(PYTHON_WHEELS_PATH),smdep)) $(eval $(call SMSHA_DEP_RULES, $(SONIC_DOCKER_IMAGES) $(SONIC_DOCKER_DBG_IMAGES), $(TARGET_PATH),smdep)) # rules for <.dep> and <.sha> file creation # # This rule creates two dependency files for the target # [1] .dep file # Each module target defines a variable called '_DEP_FILES' that contains the list of dependency files for the target. # Contents of the '_DEP_FILES' variable is stored in this file # # [2] .sha file # The SHA hash (.sha) file is created from 48 byte SHA value for each of the dependency files present in the .dep file # # The target needs to be rebuilt if any of the dependent flags are changed. # The module dependency file is created with the name as '.dep' and the SHA hash file created as '.dep.sha'. # This file is added as a dependency to the target, so that any change in the file will trigger the target recompilation. # For Eg: # target/debs/stretch/bash_4.3-14_amd64.deb.dep # target/debs/stretch/bash_4.3-14_amd64.deb.dep.sha # # RULE args: # $(1) => target name # $(2) => target destination folder path # $(3) => target file extension # define SHA_DEP_RULES ALL_DEP_FILES_LIST += $(foreach pkg,$(2), $($(filter none,$($(1)_CACHE_MODE)), \ $(addsuffix .$(3),$(addprefix $(pkg)/, $(1))) \ $(addsuffix .$(3).sha,$(addprefix $(pkg)/, $(1))))) $(addsuffix .$(3),$(addprefix $(2)/, $(1))) : $(2)/%.$(3) : \ $(2)/%.flags $$$$($$$$*_DEP_FILES) $$$$(if $$$$($$$$*_SMDEP_FILES), $(2)/%.smdep) @$$(eval $$*_DEP_FILES_MODIFIED := $$? ) @$$(file >$$@,$$($$*_DEP_FILES)) @cat $$@ |xargs git hash-object >$$@.sha @$$(if $$(MDEBUG), $$(info DEP: $$@, MOD:$$?)) endef $(eval $(call SHA_DEP_RULES, $(SONIC_MAKE_DEBS) $(SONIC_DPKG_DEBS) $(SONIC_ONLINE_DEBS) $(SONIC_COPY_DEBS), $(DEBS_PATH),dep)) $(eval $(call SHA_DEP_RULES, $(SONIC_MAKE_FILES), $(FILES_PATH),dep)) $(eval $(call SHA_DEP_RULES, $(SONIC_PYTHON_STDEB_DEBS), $(PYTHON_DEBS_PATH),dep)) $(eval $(call SHA_DEP_RULES, $(SONIC_PYTHON_WHEELS), $(PYTHON_WHEELS_PATH),dep)) $(eval $(call SHA_DEP_RULES, $(SONIC_DOCKER_IMAGES) $(SONIC_DOCKER_DBG_IMAGES), $(TARGET_PATH),dep)) $(eval $(call SHA_DEP_RULES, $(SONIC_INSTALL_PKGS), $(FSROOT_PATH),dep)) # Clean all the DEP and SHA files for all the DEBS target SONIC_CACHE_CLEAN_DEBS = $(addsuffix -clean,$(addprefix $(DEBS_PATH)/, \ $(SONIC_ONLINE_DEBS) \ $(SONIC_COPY_DEBS) \ $(SONIC_MAKE_DEBS) \ $(SONIC_DPKG_DEBS) \ $(SONIC_DERIVED_DEBS) \ $(SONIC_EXTRA_DEBS))) $(SONIC_CACHE_CLEAN_DEBS) :: $(DEBS_PATH)/%-clean : .platform $$(addsuffix -clean,$$(addprefix $(DEBS_PATH)/,$$($$*_MAIN_DEB))) @rm -f $($*_DEP_FLAGS_FILE) $($*_MOD_HASH_FILE) $($*_SMOD_HASH_FILE) \ $($*_MOD_DEP_FILE) $($*_SMOD_DEP_FILE) # Clean all the DEP and SHA files for all the FILES target SONIC_CACHE_CLEAN_FILES = $(addsuffix -clean,$(addprefix $(FILES_PATH)/, \ $(SONIC_ONLINE_FILES) \ $(SONIC_COPY_FILES) \ $(SONIC_MAKE_FILES))) $(SONIC_CACHE_CLEAN_FILES) :: $(FILES_PATH)/%-clean : .platform @rm -f $($*_DEP_FLAGS_FILE) $($*_MOD_HASH_FILE) $($*_SMOD_HASH_FILE) \ $($*_MOD_DEP_FILE) $($*_SMOD_DEP_FILE) # Clean all the DEP and SHA files for all the DOCKER target SONIC_CACHE_CLEAN_TARGETS = $(addsuffix -clean,$(addprefix $(TARGET_PATH)/, \ $(SONIC_DOCKER_IMAGES) \ $(SONIC_DOCKER_DBG_IMAGES) \ $(SONIC_SIMPLE_DOCKER_IMAGES) \ $(SONIC_INSTALLERS))) $(SONIC_CACHE_CLEAN_TARGETS) :: $(TARGET_PATH)/%-clean : .platform @rm -f $($*_DEP_FLAGS_FILE) $($*_MOD_HASH_FILE) $($*_SMOD_HASH_FILE) \ $($*_MOD_DEP_FILE) $($*_SMOD_DEP_FILE) # Clean all the DEP and SHA files for all the PYTHON DEBS target SONIC_CACHE_CLEAN_STDEB_DEBS = $(addsuffix -clean,$(addprefix $(PYTHON_DEBS_PATH)/, \ $(SONIC_PYTHON_STDEB_DEBS))) $(SONIC_CACHE_CLEAN_STDEB_DEBS) :: $(PYTHON_DEBS_PATH)/%-clean : .platform @rm -f $($*_DEP_FLAGS_FILE) $($*_MOD_HASH_FILE) $($*_SMOD_HASH_FILE) \ $($*_MOD_DEP_FILE) $($*_SMOD_DEP_FILE) # Clean all the DEP and SHA files for all the PYTHON WHEELS target SONIC_CACHE_CLEAN_WHEELS = $(addsuffix -clean,$(addprefix $(PYTHON_WHEELS_PATH)/, \ $(SONIC_PYTHON_WHEELS))) $(SONIC_CACHE_CLEAN_WHEELS) :: $(PYTHON_WHEELS_PATH)/%-clean : .platform @rm -f $($*_DEP_FLAGS_FILE) $($*_MOD_HASH_FILE) $($*_SMOD_HASH_FILE) \ $($*_MOD_DEP_FILE) $($*_SMOD_DEP_FILE) .PHONY: cclean cclean:: $(SONIC_CACHE_CLEAN_DEBS) $(SONIC_CACHE_CLEAN_FILES) $(SONIC_CACHE_CLEAN_TARGETS) \ $(SONIC_CACHE_CLEAN_STDEB_DEBS) $(SONIC_CACHE_CLEAN_WHEELS) .PHONY: clean clean:: cclean # Clear all the local cache contents .PHONY:lcclean lcclean:: @rm -f $(TARGET_PATH)/cache/* # List all main targets and its derived target with indent. listall : @$(foreach target,$(SONIC_TARGET_LIST),\ $(eval DPKG:=$(lastword $(subst /, ,$(target)))) \ $(eval PATH:= $(subst $(DPKG),,$(target))) \ $(if $($(DPKG)_MAIN_DEB),, echo "[$(target)] "; \ $(foreach pkg,$($(DPKG)_DERIVED_DEBS) $($(DPKG)_EXTRA_DEBS),\ echo " $(PATH)$(pkg)"; \ )\ )\ ) #$(addprefix show-,$(SONIC_TARGET_LIST)):show-%: show-%: @$(foreach target,$(SONIC_TARGET_LIST),\ $(eval DPKG:=$(lastword $(subst /, ,$(target)))) \ $(eval PATH:= $(subst $(DPKG),,$(target))) \ $(if $(findstring $*,$(target)), $(info ) \ $(eval MDPKG:=$(if $($(DPKG)_MAIN_DEB),$($(DPKG)_MAIN_DEB),$(DPKG))) \ $(info [$(PATH)$(MDPKG)] ) \ $(foreach pkg,$($(MDPKG)_DERIVED_DEBS) $($(MDPKG)_EXTRA_DEBS),\ $(info $(SPACE)$(SPACE)$(SPACE)$(SPACE) $(PATH)$(pkg)) \ )\ )\ ) $(info ) # Cache prune - Remove least frequently used cache files. NUMDAYS ?= 7 # Delete all the cache files which are not used within last 7 days .PHONY: cprune cprune: @find $(SONIC_DPKG_CACHE_DIR) -name "*.tgz" ! -mtime -$(NUMDAYS) -exec rm -f {} \; # Invoke DPKG dependency only if DPKG cache is enabled. define dpkg_depend $(if $(filter-out none,$(SONIC_DPKG_CACHE_METHOD)),$(1)) endef