Android 系统编译顺序

逃离我推掉我的手 2022-01-10 13:53 327阅读 0赞

从我的理解来看，

. build/eventsetup.h 初始化了编译需要的函数。 如：

Invoke ". build/envsetup.sh" from your shell to add the following functions to your environment:
    - lunch:   lunch <product_name>-<build_variant>
    - tapas:   tapas [<App1> <App2> ...] [arm|x86|mips] [eng|userdebug|user]
    - croot:   Changes directory to the top of the tree.
    - m:       Makes from the top of the tree.
    - mm:      Builds all of the modules in the current directory.
    - mmm:     Builds all of the modules in the supplied directories.
    - cgrep:   Greps on all local C/C++ files.
    - jgrep:   Greps on all local Java files.
    - resgrep: Greps on all local res/*.xml files.
    - godir:   Go to the directory containing a file.

lunch X-eng

X 是TARGET\_PRODUCT

eng是TARGET\_BUILD\_VARIANT

/build/envsetup.sh中使用

# Execute the contents of any vendorsetup.sh files we can find.
    for f in `test -d device && find device -maxdepth 6 -name 'vendorsetup.sh' 2> /dev/null` \
             `test -d vendor && find vendor -maxdepth 6 -name 'vendorsetup.sh' 2> /dev/null`
    do
        echo "including $f"
        . $f
    done
    unset f

将vendor/和device下的envsetup.sh引入。

我们在Vendor/\*/vendorsetup.sh中

add_lunch_combo X-eng
    add_lunch_combo X-userdebug

将以上build 名称添加到envsetup.sh中。

在make X的时候，

X\_base.mk中会引入build下的mk文件执行。

# Superclass
    $(call inherit-product, build/target/product/full_base_tablet.mk)
    
    # To get support Location Service
    $(call inherit-product, build/target/product/generic_no_telephony.mk)
    
    # product locales configuration
    $(call inherit-product, build/target/product/locales_full.mk)
    
    # Include Dalvik Heap Size Configuration
    $(call inherit-product, vendor/intel/common/dalvik/tablet-mdpi-1024-dalvik-heap.mk)