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1d274d26869bfe6881d503b2d24f87cc40cf2727
build/core/envsetup.mk
Ying Wang 1d274d2686 Load compiler environment for a second arch. 
This is the first step to build 32-bit libraries in a 64-bit product.
It will work like this:
1) In the product's BoardConfig.mk, define:
TARGET_2ND_ARCH, TARGET_2ND_ARCH_VARIANT, TARGET_2ND_CPU_VARIANT.
The build system uses those variables to set up an additional compiler
environment for the second arch.

2) When parsing Android.mks, the build system sets up rules to build a
module for both the 1st arch and the 2nd arch, unless it's explicitly
asked to skip so.
Android.mk will be adapted if there is additional rule of generating
source files.
The build system will accept arch-specific LOCAL_ variables, such as
LOCAL_CFLAGS_arm, LOCAL_CFLAGS_armv7-a-neon, LOCAL_CFLAGS_cortex-a15,
LOCAL_CFLAGS_aarch64 etc. Modules use such variables to set up build for
various archs at the same time.

3) Install binary of the 2nd arch by adding "<module_name>:32" to
PRODUCT_PACKAGES. All 2nd-arch libraries linked in by "<module_name>:32"
will be installed automatically.

Bug: 11654773
Change-Id: I2df63cd5463a07bf5358bee2a109f8fb9590fe30

Conflicts:
	core/combo/TARGET_linux-arm.mk
2014-01-24 13:34:26 -08:00

302 lines
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Makefile
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# Variables we check:
# HOST_BUILD_TYPE = { release debug }
# TARGET_BUILD_TYPE = { release debug }
# and we output a bunch of variables, see the case statement at
# the bottom for the full list
# OUT_DIR is also set to "out" if it's not already set.
# this allows you to set it to somewhere else if you like
# Set up version information.
include $(BUILD_SYSTEM)/version_defaults.mk
# ---------------------------------------------------------------
# If you update the build system such that the environment setup
# or buildspec.mk need to be updated, increment this number, and
# people who haven't re-run those will have to do so before they
# can build. Make sure to also update the corresponding value in
# buildspec.mk.default and envsetup.sh.
CORRECT_BUILD_ENV_SEQUENCE_NUMBER := 10
# ---------------------------------------------------------------
# The product defaults to generic on hardware
# NOTE: This will be overridden in product_config.mk if make
# was invoked with a PRODUCT-xxx-yyy goal.
ifeq ($(TARGET_PRODUCT),)
TARGET_PRODUCT := full
endif
# the variant -- the set of files that are included for a build
ifeq ($(strip $(TARGET_BUILD_VARIANT)),)
TARGET_BUILD_VARIANT := eng
endif
# ---------------------------------------------------------------
# Set up configuration for host machine. We don't do cross-
# compiles except for arm/mips, so the HOST is whatever we are
# running on
UNAME := $(shell uname -sm)
# HOST_OS
ifneq (,$(findstring Linux,$(UNAME)))
HOST_OS := linux
endif
ifneq (,$(findstring Darwin,$(UNAME)))
HOST_OS := darwin
endif
ifneq (,$(findstring Macintosh,$(UNAME)))
HOST_OS := darwin
endif
ifneq (,$(findstring CYGWIN,$(UNAME)))
HOST_OS := windows
endif
# BUILD_OS is the real host doing the build.
BUILD_OS := $(HOST_OS)
# Under Linux, if USE_MINGW is set, we change HOST_OS to Windows to build the
# Windows SDK. Only a subset of tools and SDK will manage to build properly.
ifeq ($(HOST_OS),linux)
ifneq ($(USE_MINGW),)
HOST_OS := windows
endif
endif
ifeq ($(HOST_OS),)
$(error Unable to determine HOST_OS from uname -sm: $(UNAME)!)
endif
# HOST_ARCH
ifneq (,$(findstring 86,$(UNAME)))
HOST_ARCH := x86
endif
ifneq (,$(findstring Power,$(UNAME)))
HOST_ARCH := ppc
endif
BUILD_ARCH := $(HOST_ARCH)
ifeq ($(HOST_ARCH),)
$(error Unable to determine HOST_ARCH from uname -sm: $(UNAME)!)
endif
# the host build defaults to release, and it must be release or debug
ifeq ($(HOST_BUILD_TYPE),)
HOST_BUILD_TYPE := release
endif
ifneq ($(HOST_BUILD_TYPE),release)
ifneq ($(HOST_BUILD_TYPE),debug)
$(error HOST_BUILD_TYPE must be either release or debug, not '$(HOST_BUILD_TYPE)')
endif
endif
# This is the standard way to name a directory containing prebuilt host
# objects. E.g., prebuilt/$(HOST_PREBUILT_TAG)/cc
ifeq ($(HOST_OS),windows)
HOST_PREBUILT_TAG := windows
else
HOST_PREBUILT_TAG := $(HOST_OS)-$(HOST_ARCH)
endif
# TARGET_COPY_OUT_* are all relative to the staging directory, ie PRODUCT_OUT.
# Define them here so they can be used in product config files.
TARGET_COPY_OUT_SYSTEM := system
TARGET_COPY_OUT_DATA := data
TARGET_COPY_OUT_VENDOR := system/vendor
TARGET_COPY_OUT_ROOT := root
TARGET_COPY_OUT_RECOVERY := recovery
# Read the product specs so we an get TARGET_DEVICE and other
# variables that we need in order to locate the output files.
include $(BUILD_SYSTEM)/product_config.mk
build_variant := $(filter-out eng user userdebug,$(TARGET_BUILD_VARIANT))
ifneq ($(build_variant)-$(words $(TARGET_BUILD_VARIANT)),-1)
$(warning bad TARGET_BUILD_VARIANT: $(TARGET_BUILD_VARIANT))
$(error must be empty or one of: eng user userdebug)
endif
# Boards may be defined under $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)
# or under vendor/*/$(TARGET_DEVICE). Search in both places, but
# make sure only one exists.
# Real boards should always be associated with an OEM vendor.
board_config_mk := \
$(strip $(wildcard \
$(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
$(shell test -d device && find device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
$(shell test -d vendor && find vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
))
ifeq ($(board_config_mk),)
$(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
endif
ifneq ($(words $(board_config_mk)),1)
$(error Multiple board config files for TARGET_DEVICE $(TARGET_DEVICE): $(board_config_mk))
endif
include $(board_config_mk)
ifeq ($(TARGET_ARCH),)
$(error TARGET_ARCH not defined by board config: $(board_config_mk))
endif
TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
board_config_mk :=
# ---------------------------------------------------------------
# Set up configuration for target machine.
# The following must be set:
# TARGET_OS = { linux }
# TARGET_ARCH = { arm | x86 | mips }
TARGET_OS := linux
# TARGET_ARCH should be set by BoardConfig.mk and will be checked later
# the target build type defaults to release
ifneq ($(TARGET_BUILD_TYPE),debug)
TARGET_BUILD_TYPE := release
endif
# ---------------------------------------------------------------
# figure out the output directories
ifeq (,$(strip $(OUT_DIR)))
ifeq (,$(strip $(OUT_DIR_COMMON_BASE)))
OUT_DIR := $(TOPDIR)out
else
OUT_DIR := $(OUT_DIR_COMMON_BASE)/$(notdir $(PWD))
endif
endif
DEBUG_OUT_DIR := $(OUT_DIR)/debug
# Move the host or target under the debug/ directory
# if necessary.
TARGET_OUT_ROOT_release := $(OUT_DIR)/target
TARGET_OUT_ROOT_debug := $(DEBUG_OUT_DIR)/target
TARGET_OUT_ROOT := $(TARGET_OUT_ROOT_$(TARGET_BUILD_TYPE))
HOST_OUT_ROOT_release := $(OUT_DIR)/host
HOST_OUT_ROOT_debug := $(DEBUG_OUT_DIR)/host
HOST_OUT_ROOT := $(HOST_OUT_ROOT_$(HOST_BUILD_TYPE))
HOST_OUT_release := $(HOST_OUT_ROOT_release)/$(HOST_OS)-$(HOST_ARCH)
HOST_OUT_debug := $(HOST_OUT_ROOT_debug)/$(HOST_OS)-$(HOST_ARCH)
HOST_OUT := $(HOST_OUT_$(HOST_BUILD_TYPE))
BUILD_OUT := $(OUT_DIR)/host/$(BUILD_OS)-$(BUILD_ARCH)
TARGET_PRODUCT_OUT_ROOT := $(TARGET_OUT_ROOT)/product
TARGET_COMMON_OUT_ROOT := $(TARGET_OUT_ROOT)/common
HOST_COMMON_OUT_ROOT := $(HOST_OUT_ROOT)/common
PRODUCT_OUT := $(TARGET_PRODUCT_OUT_ROOT)/$(TARGET_DEVICE)
OUT_DOCS := $(TARGET_COMMON_OUT_ROOT)/docs
BUILD_OUT_EXECUTABLES := $(BUILD_OUT)/bin
HOST_OUT_EXECUTABLES := $(HOST_OUT)/bin
HOST_OUT_SHARED_LIBRARIES := $(HOST_OUT)/lib
HOST_OUT_JAVA_LIBRARIES := $(HOST_OUT)/framework
HOST_OUT_SDK_ADDON := $(HOST_OUT)/sdk_addon
HOST_OUT_INTERMEDIATES := $(HOST_OUT)/obj
HOST_OUT_HEADERS := $(HOST_OUT_INTERMEDIATES)/include
HOST_OUT_INTERMEDIATE_LIBRARIES := $(HOST_OUT_INTERMEDIATES)/lib
HOST_OUT_NOTICE_FILES := $(HOST_OUT_INTERMEDIATES)/NOTICE_FILES
HOST_OUT_COMMON_INTERMEDIATES := $(HOST_COMMON_OUT_ROOT)/obj
TARGET_OUT_INTERMEDIATES := $(PRODUCT_OUT)/obj
TARGET_OUT_HEADERS := $(TARGET_OUT_INTERMEDIATES)/include
TARGET_OUT_INTERMEDIATE_LIBRARIES := $(TARGET_OUT_INTERMEDIATES)/lib
TARGET_OUT_COMMON_INTERMEDIATES := $(TARGET_COMMON_OUT_ROOT)/obj
TARGET_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_SYSTEM)
TARGET_OUT_EXECUTABLES := $(TARGET_OUT)/bin
TARGET_OUT_OPTIONAL_EXECUTABLES := $(TARGET_OUT)/xbin
ifneq ($(filter %64,$(TARGET_ARCH)),)
# /system/lib always contains 32-bit libraries,
# and /system/lib64 (if present) always contains 64-bit libraries.
TARGET_OUT_SHARED_LIBRARIES := $(TARGET_OUT)/lib64
else
TARGET_OUT_SHARED_LIBRARIES := $(TARGET_OUT)/lib
endif
TARGET_OUT_JAVA_LIBRARIES := $(TARGET_OUT)/framework
TARGET_OUT_APPS := $(TARGET_OUT)/app
TARGET_OUT_APPS_PRIVILEGED := $(TARGET_OUT)/priv-app
TARGET_OUT_KEYLAYOUT := $(TARGET_OUT)/usr/keylayout
TARGET_OUT_KEYCHARS := $(TARGET_OUT)/usr/keychars
TARGET_OUT_ETC := $(TARGET_OUT)/etc
TARGET_OUT_NOTICE_FILES := $(TARGET_OUT_INTERMEDIATES)/NOTICE_FILES
TARGET_OUT_FAKE := $(PRODUCT_OUT)/fake_packages
# Out for TARGET_2ND_ARCH
TARGET_2ND_ARCH_VAR_PREFIX := 2ND_
$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_INTERMEDIATES := $(PRODUCT_OUT)/obj_$(TARGET_2ND_ARCH)
$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_INTERMEDIATE_LIBRARIES := $($(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_INTERMEDIATES)/lib
$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_SHARED_LIBRARIES := $(TARGET_OUT)/lib
TARGET_OUT_DATA := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_DATA)
TARGET_OUT_DATA_EXECUTABLES := $(TARGET_OUT_EXECUTABLES)
TARGET_OUT_DATA_SHARED_LIBRARIES := $(TARGET_OUT_SHARED_LIBRARIES)
TARGET_OUT_DATA_JAVA_LIBRARIES := $(TARGET_OUT_DATA)/framework
TARGET_OUT_DATA_APPS := $(TARGET_OUT_DATA)/app
TARGET_OUT_DATA_KEYLAYOUT := $(TARGET_OUT_KEYLAYOUT)
TARGET_OUT_DATA_KEYCHARS := $(TARGET_OUT_KEYCHARS)
TARGET_OUT_DATA_ETC := $(TARGET_OUT_ETC)
TARGET_OUT_DATA_NATIVE_TESTS := $(TARGET_OUT_DATA)/nativetest
TARGET_OUT_DATA_FAKE := $(TARGET_OUT_DATA)/fake_packages
TARGET_OUT_CACHE := $(PRODUCT_OUT)/cache
TARGET_OUT_VENDOR := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_VENDOR)
TARGET_OUT_VENDOR_EXECUTABLES := $(TARGET_OUT_VENDOR)/bin
TARGET_OUT_VENDOR_OPTIONAL_EXECUTABLES := $(TARGET_OUT_VENDOR)/xbin
ifneq ($(filter %64,$(TARGET_ARCH)),)
TARGET_OUT_VENDOR_SHARED_LIBRARIES := $(TARGET_OUT_VENDOR)/lib64
else
TARGET_OUT_VENDOR_SHARED_LIBRARIES := $(TARGET_OUT_VENDOR)/lib
endif
TARGET_OUT_VENDOR_JAVA_LIBRARIES := $(TARGET_OUT_VENDOR)/framework
TARGET_OUT_VENDOR_APPS := $(TARGET_OUT_VENDOR)/app
TARGET_OUT_VENDOR_ETC := $(TARGET_OUT_VENDOR)/etc
TARGET_OUT_UNSTRIPPED := $(PRODUCT_OUT)/symbols
TARGET_OUT_EXECUTABLES_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)/system/bin
TARGET_OUT_SHARED_LIBRARIES_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)/system/lib
TARGET_ROOT_OUT_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)
TARGET_ROOT_OUT_SBIN_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)/sbin
TARGET_ROOT_OUT_BIN_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)/bin
TARGET_ROOT_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_ROOT)
TARGET_ROOT_OUT_BIN := $(TARGET_ROOT_OUT)/bin
TARGET_ROOT_OUT_SBIN := $(TARGET_ROOT_OUT)/sbin
TARGET_ROOT_OUT_ETC := $(TARGET_ROOT_OUT)/etc
TARGET_ROOT_OUT_USR := $(TARGET_ROOT_OUT)/usr
TARGET_RECOVERY_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_RECOVERY)
TARGET_RECOVERY_ROOT_OUT := $(TARGET_RECOVERY_OUT)/root
TARGET_SYSLOADER_OUT := $(PRODUCT_OUT)/sysloader
TARGET_SYSLOADER_ROOT_OUT := $(TARGET_SYSLOADER_OUT)/root
TARGET_SYSLOADER_SYSTEM_OUT := $(TARGET_SYSLOADER_OUT)/root/system
TARGET_INSTALLER_OUT := $(PRODUCT_OUT)/installer
TARGET_INSTALLER_DATA_OUT := $(TARGET_INSTALLER_OUT)/data
TARGET_INSTALLER_ROOT_OUT := $(TARGET_INSTALLER_OUT)/root
TARGET_INSTALLER_SYSTEM_OUT := $(TARGET_INSTALLER_OUT)/root/system
TARGET_FACTORY_RAMDISK_OUT := $(PRODUCT_OUT)/factory_ramdisk
COMMON_MODULE_CLASSES := TARGET-NOTICE_FILES HOST-NOTICE_FILES HOST-JAVA_LIBRARIES
ifeq (,$(strip $(DIST_DIR)))
DIST_DIR := $(OUT_DIR)/dist
endif
ifeq ($(PRINT_BUILD_CONFIG),)
PRINT_BUILD_CONFIG := true
endif
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