本文解析了Android构建系统中模块标签的含义及其对不同构建类型的影响，包括'user'、'eng'、'tests'和'optional'等，并解释了这些标签如何控制模块在不同版本中的编译。
"Set LOCAL_MODULE_TAGS to any number of whitespace-separated tags.
This variable controls what build flavors the package gets included
in. For example:
* user: include this in user/userdebug builds
* eng: include this in eng builds
* tests: the target is a testing target and makes it available for
tests
* optional: don't include this"
Are these the same as "variants" and if so, which name would affect
the build and how? I've noticed that everything mentioned in a
product's makefile will always get built. But what gets in the final
system.img not always the same as what gets built.
以下为可能性最大的答案：
就是mk的标记啊，
直接给你上官方的吧
http://android.git.kernel.org/?p=platform/build.git;a=blob_plain;f=core/build-system.html;h=43bae03b6b7b9cba678b86d2faf424fa565497bf;hb=HEAD
user:指该模块只在user版本下才编译
eng: 指该模块只在eng版本下才编译
tests: 指该模块只在tests版本下才编译
optional:指该模块在所有版本下都编译
This variable controls what build flavors the package gets included
in. For example:
* user: include this in user/userdebug builds
* eng: include this in eng builds
* tests: the target is a testing target and makes it available for
tests
* optional: don't include this"
Are these the same as "variants" and if so, which name would affect
the build and how? I've noticed that everything mentioned in a
product's makefile will always get built. But what gets in the final
system.img not always the same as what gets built.
以下为可能性最大的答案：
就是mk的标记啊，
直接给你上官方的吧
http://android.git.kernel.org/?p=platform/build.git;a=blob_plain;f=core/build-system.html;h=43bae03b6b7b9cba678b86d2faf424fa565497bf;hb=HEAD
user:指该模块只在user版本下才编译
eng: 指该模块只在eng版本下才编译
tests: 指该模块只在tests版本下才编译
optional:指该模块在所有版本下都编译
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