1variant_list := $(filter AUX-%,$(MAKECMDGOALS)) 2 3ifdef variant_list 4AUX_OS_VARIANT_LIST := $(patsubst AUX-%,%,$(variant_list)) 5else 6AUX_OS_VARIANT_LIST := $(TARGET_AUX_OS_VARIANT_LIST) 7endif 8 9# exclude AUX targets from build 10ifeq ($(AUX_OS_VARIANT_LIST),none) 11AUX_OS_VARIANT_LIST := 12endif 13 14# temporary workaround to support external toolchain 15ifeq ($(NANOHUB_TOOLCHAIN),) 16AUX_OS_VARIANT_LIST := 17endif 18 19# setup toolchain paths for various CPU architectures 20# this one will come from android prebuilts eventually 21AUX_TOOLCHAIN_cortexm4 := $(NANOHUB_TOOLCHAIN) 22ifeq ($(wildcard $(AUX_TOOLCHAIN_cortexm4)gcc),) 23AUX_TOOLCHAIN_cortexm4:= 24endif 25 26# there is no MAKE var that defines path to HOST toolchain 27# all the interesting paths are hardcoded in soong, and are not available from here 28# There is no other way but to hardcode them again, as we may need host x86 toolcain for AUX 29ifeq ($(HOST_OS),linux) 30AUX_TOOLCHAIN_x86 := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/bin/x86_64-linux- 31endif 32 33# setup AUX globals 34AUX_SHLIB_SUFFIX := .so 35AUX_GLOBAL_ARFLAGS := cqsD 36AUX_STATIC_LIB_SUFFIX := .a 37 38# Load ever-lasting "indexed" version of AUX variant environment; it is treated as READ-ONLY from this 39# moment on. 40# 41# $(1) - variant 42# no return value 43define aux-variant-setup-paths 44$(eval AUX_OUT_ROOT_$(1) := $(PRODUCT_OUT)/aux/$(1)) \ 45$(eval AUX_COMMON_OUT_ROOT_$(1) := $(AUX_OUT_ROOT_$(1))/common) \ 46$(eval AUX_OUT_$(1) := $(AUX_OUT_ROOT_$(1))/$(AUX_OS_$(1))-$(AUX_ARCH_$(1))-$(AUX_CPU_$(1))) \ 47$(eval AUX_OUT_INTERMEDIATES_$(1) := $(AUX_OUT_$(1))/obj) \ 48$(eval AUX_OUT_COMMON_INTERMEDIATES_$(1) := $(AUX_COMMON_OUT_ROOT_$(1))/obj) \ 49$(eval AUX_OUT_HEADERS_$(1) := $(AUX_OUT_INTERMEDIATES_$(1))/include) \ 50$(eval AUX_OUT_NOTICE_FILES_$(1) := $(AUX_OUT_INTERMEDIATES_$(1))/NOTICE_FILES) \ 51$(eval AUX_OUT_FAKE_$(1) := $(AUX_OUT_$(1))/fake_packages) \ 52$(eval AUX_OUT_GEN_$(1) := $(AUX_OUT_$(1))/gen) \ 53$(eval AUX_OUT_COMMON_GEN_$(1) := $(AUX_COMMON_OUT_ROOT_$(1))/gen) \ 54$(eval AUX_OUT_EXECUTABLES_$(1) := $(AUX_OUT_$(1))/bin) \ 55$(eval AUX_OUT_UNSTRIPPED_$(1) := $(AUX_OUT_$(1))/symbols) 56endef 57 58# Copy "indexed" AUX environment for given VARIANT into 59# volatile not-indexed set of variables for simplicity of access. 60# Injection of index support throughout the build system is suboptimal 61# hence volatile environment is constructed 62# Unlike HOST*, TARGET* variables, AUX* variables are NOT read-only, but their 63# indexed versions are. 64# 65# $(1) - variant 66# no return value 67define aux-variant-load-env 68$(eval AUX_OS_VARIANT:=$(1)) \ 69$(eval AUX_OS:=$(AUX_OS_$(1))) \ 70$(eval AUX_ARCH:=$(AUX_ARCH_$(1))) \ 71$(eval AUX_SUBARCH:=$(AUX_SUBARCH_$(1))) \ 72$(eval AUX_CPU:=$(AUX_CPU_$(1))) \ 73$(eval AUX_OS_PATH:=$(AUX_OS_PATH_$(1))) \ 74$(eval AUX_OUT_ROOT := $(AUX_OUT_ROOT_$(1))) \ 75$(eval AUX_COMMON_OUT_ROOT := $(AUX_COMMON_OUT_ROOT_$(1))) \ 76$(eval AUX_OUT := $(AUX_OUT_$(1))) \ 77$(eval AUX_OUT_INTERMEDIATES := $(AUX_OUT_INTERMEDIATES_$(1))) \ 78$(eval AUX_OUT_COMMON_INTERMEDIATES := $(AUX_OUT_COMMON_INTERMEDIATES_$(1))) \ 79$(eval AUX_OUT_HEADERS := $(AUX_OUT_HEADERS_$(1))) \ 80$(eval AUX_OUT_NOTICE_FILES := $(AUX_OUT_NOTICE_FILES_$(1))) \ 81$(eval AUX_OUT_FAKE := $(AUX_OUT_FAKE_$(1))) \ 82$(eval AUX_OUT_GEN := $(AUX_OUT_GEN_$(1))) \ 83$(eval AUX_OUT_COMMON_GEN := $(AUX_OUT_COMMON_GEN_$(1))) \ 84$(eval AUX_OUT_EXECUTABLES := $(AUX_OUT_EXECUTABLES_$(1))) \ 85$(eval AUX_OUT_UNSTRIPPED := $(AUX_OUT_UNSTRIPPED_$(1))) 86endef 87 88# given a variant:path pair, load the variant conviguration with aux-variant-setup-paths from file 89# this is a build system extension mechainsm, since configuration typically resides in non-build 90# project space 91# 92# $(1) - variant:path pair 93# $(2) - file suffix 94# no return value 95define aux-variant-import-from-pair 96$(eval _pair := $(subst :, ,$(1))) \ 97$(eval _name:=$(word 1,$(_pair))) \ 98$(eval _path:=$(word 2,$(_pair))) \ 99$(eval include $(_path)/$(_name)$(2)) \ 100$(eval AUX_OS_VARIANT_LIST_$(AUX_OS_$(1)):=) \ 101$(call aux-variant-setup-paths,$(_name)) \ 102$(eval AUX_ALL_VARIANTS += $(_name)) \ 103$(eval AUX_ALL_OSES := $(filter-out $(AUX_OS_$(_name)),$(AUX_ALL_OSES)) $(AUX_OS_$(_name))) \ 104$(eval AUX_ALL_CPUS := $(filter-out $(AUX_CPU_$(_name)),$(AUX_ALL_CPUS)) $(AUX_CPU_$(_name))) \ 105$(eval AUX_ALL_ARCHS := $(filter-out $(AUX_ARCH_$(_name)),$(AUX_ALL_ARCHS)) $(AUX_ARCH_$(_name))) \ 106$(eval AUX_ALL_SUBARCHS := $(filter-out $(AUX_SUBARCH_$(_name)),$(AUX_ALL_SUBARCHS)) $(AUX_SUBARCH_$(_name))) 107endef 108 109# Load system configuration referenced by AUX variant config; 110# this is a build extension mechanism; typically system config 111# resides in a non-build projects; 112# system config may define new rules and globally visible BUILD* 113# includes to support project-specific build steps and toolchains 114# MAintains list of valiants that reference this os config in OS "indexed" var 115# this facilitates multivariant build of the OS (or whataver it is the name of common component these variants share) 116# 117# $(1) - variant 118# no return value 119define aux-import-os-config 120$(eval _aioc_os := $(AUX_OS_$(1))) \ 121$(eval AUX_OS_PATH_$(1) := $(patsubst $(_aioc_os):%,%,$(filter $(_aioc_os):%,$(AUX_ALL_OS_PATHS)))) \ 122$(eval _aioc_os_cfg := $(AUX_OS_PATH_$(1))/$(_aioc_os)$(os_sfx)) \ 123$(if $(wildcard $(_aioc_os_cfg)),,$(error AUX '$(_aioc_os)' OS config file [$(notdir $(_aioc_os_cfg))] required by AUX variant '$(1)' does not exist)) \ 124$(if $(filter $(_aioc_os),$(_os_list)),,$(eval include $(_aioc_os_cfg))) \ 125$(eval AUX_OS_VARIANT_LIST_$(_aioc_os) += $(1)) \ 126$(eval _os_list += $(_aioc_os)) 127endef 128 129# make sure that AUX config variables are minimally sane; 130# as a bare minimum they must contain the vars described by aux_env 131# Generate error if requirement is not met. 132# 133#$(1) - variant 134# no return value 135define aux-variant-validate 136$(eval _all:=) \ 137$(eval _req:=$(addsuffix _$(1),$(aux_env))) \ 138$(foreach var,$(_req),$(eval _all += $(var))) \ 139$(eval _missing := $(filter-out $(_all),$(_req))) \ 140$(if $(_missing),$(error AUX variant $(1) must define vars: $(_missing))) 141endef 142 143AUX_ALL_VARIANTS := 144AUX_ALL_OSES := 145AUX_ALL_CPUS := 146AUX_ALL_ARCHS := 147AUX_ALL_SUBARCHS := 148 149variant_sfx :=_aux_variant_config.mk 150os_sfx :=_aux_os_config.mk 151 152config_roots := $(wildcard device vendor) 153all_configs := 154ifdef config_roots 155all_configs := $(sort $(shell find $(config_roots) -maxdepth 4 -name '*$(variant_sfx)' -o -name '*$(os_sfx)')) 156endif 157all_os_configs := $(filter %$(os_sfx),$(all_configs)) 158all_variant_configs := $(filter %$(variant_sfx),$(all_configs)) 159 160AUX_ALL_OS_PATHS := $(foreach f,$(all_os_configs),$(patsubst %$(os_sfx),%,$(notdir $(f))):$(patsubst %/,%,$(dir $(f)))) 161AUX_ALL_OS_VARIANT_PATHS := $(foreach f,$(all_variant_configs),$(patsubst %$(variant_sfx),%,$(notdir $(f))):$(patsubst %/,%,$(dir $(f)))) 162 163my_variant_pairs := $(foreach v,$(AUX_OS_VARIANT_LIST),$(filter $(v):%,$(AUX_ALL_OS_VARIANT_PATHS))) 164my_missing_variants := $(foreach v,$(AUX_OS_VARIANT_LIST),$(if $(filter $(v):%,$(AUX_ALL_OS_VARIANT_PATHS)),,$(v))) 165 166ifneq ($(strip $(my_missing_variants)),) 167$(error Don't know how to build variant(s): $(my_missing_variants)) 168endif 169 170# mandatory variables 171aux_env := AUX_OS AUX_ARCH AUX_SUBARCH AUX_CPU 172 173$(foreach v,$(my_variant_pairs),$(if $(filter $(v),$(AUX_ALL_VARIANTS)),,$(call aux-variant-import-from-pair,$(v),$(variant_sfx)))) 174 175ifdef AUX_ALL_VARIANTS 176_os_list := 177$(foreach v,$(AUX_ALL_VARIANTS),\ 178 $(call aux-import-os-config,$(v)) \ 179 $(call aux-variant-validate,$(v)) \ 180) 181endif 182 183INSTALLED_AUX_TARGETS := 184