Android 开发基础知识

核心提示：choices 的值为：build/target/board/emulator/BoardConfig.mkbuild/target/board/generic/BoardConfig.mkbuild/target/board/sim/BoardConfig.mkvendor/marvell/littleton/Boa

choices 的值为：

build/target/board/emulator/BoardConfig.mk

build/target/board/generic/BoardConfig.mk

build/target/board/sim/BoardConfig.mk

vendor/marvell/littleton/BoardConfig.mk

经过：

for choice in ${choices[@]}

do

# The product name is the name of the directory containing

# the makefile we found, above.

prodlist=(${prodlist[@]} `dirname ${choice} | xargs basename`)

done

的处理，prodlist的值为：

emulator generic sim littleton

所以选择菜单为：

Product choices are:

1. emulator

2. generic

3. sim

4. littleton

如果选择 4，那么 TARGET_PRODUCT 被赋值为： littleton。

board_config_mk :=

$(strip $(wildcard

$(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk

vendor/*/$(TARGET_DEVICE)/BoardConfig.mk

))

怎样添加一个模块

LOCAL_PATH:= $(call my-dir)

#编译静态库

include $(CLEAR_VARS)

LOCAL_MODULE = libhellos

LOCAL_CFLAGS = $(L_CFLAGS)

LOCAL_SRC_FILES = hellos.c

LOCAL_C_INCLUDES = $(INCLUDES)

LOCAL_SHARED_LIBRARIES := libcutils

LOCAL_COPY_HEADERS_TO := libhellos

LOCAL_COPY_HEADERS := hellos.h

include $(BUILD_STATIC_LIBRARY)

#编译动态库

include $(CLEAR_VARS)

LOCAL_MODULE = libhellod

LOCAL_CFLAGS = $(L_CFLAGS)

LOCAL_SRC_FILES = hellod.c

LOCAL_C_INCLUDES = $(INCLUDES)

LOCAL_SHARED_LIBRARIES := libcutils

LOCAL_COPY_HEADERS_TO := libhellod

LOCAL_COPY_HEADERS := hellod.h

include $(BUILD_SHARED_LIBRARY)

BUILD_TEST=true

ifeq ($(BUILD_TEST),true)

#使用静态库

include $(CLEAR_VARS)