Parsing the syntax of the Android. mk File

Parsing the syntax of the Android. mk File

This is the Android. mk file of the Browser module of RDA8810 (Android4.2.2 ).

LOCAL_PATH: = $ (call my-dir)

Include $ (CLEAR_VARS)

LOCAL_MODULE_TAGS: = optional

LOCAL_STATIC_JAVA_LIBRARIES: = \

Android-common \

Guava \

Android-support-v13 \

Android-support-v4 \

LOCAL_SRC_FILES: = \

$ (Call all-java-files-under, src )\

Src/com/android/browser/EventLogTags. logtags

LOCAL_PACKAGE_NAME: = Browser

LOCAL_PROGUARD_FLAG_FILES: = proguard. flags

LOCAL_EMMA_COVERAGE_FILTER: = *,-com. android. common .*

# We need the sound recorder for the Media Capture API.

LOCAL_REQUIRED_MODULES: = SoundRecorder

Include $ (BUILD_PACKAGE)

# Additionally, build tests in sub-folders in a separate. apk

Include $ (call all-makefiles-under, $ (LOCAL_PATH ))

The first line, LOCAL_PATH:

This variable is used to give the path of the current file. You must go to Android. the START definition of the mk file. This variable is not cleared by $ (CLEAR_VARS), so every Android. mk only needs to be defined once (even if you have defined several modules in a file );

Row 2, include $ (CLEAR_VARS)

CLEAR_VARS is provided by the compilation system, specifying that GNU_MAKEFILE clears many LOCAL_XXX variables for you. This is necessary except LOCAL_PATH, because all compilation control is in the same gnu make execution environment, all variables are global;

Line 3: LOCAL_MODULE_TAGS

This variable has four options to choose from:

1. user: This module is compiled only in the user version;

2. eng: This module is compiled only in the eng version;

3. tests: This module is compiled only in the tests version;

4. optional: This module is compiled in all versions.

Line 4: LOCAL_STATIC_JAVA_LIBRARIES

The alias of The. jar library.

The fifth line, LOCAL_SRC_FILES

Lists all source files to be compiled. The macro all-java-files-under is defined in build/core/definitions. mk.

Line 6: LOCAL_PACKAGE_NAME

Indicates the package name, which is generally the same as the folder name.

Line 7: LOCAL_PROGUARD_FLAG_FILES

Configuration related to obfuscation code

Row 8: LOCAL_EMMA_COVERAGE_FILTER

This is not understandable for the time being. If you have understood it, please help me to answer it.

Line 9: LOCAL_REQUIRED_MODULES

Recording configuration interface

Row 10, include $ (BUILD_PACKAGE)

Indicates that the current JAVA code is built into APK

Row 11th, include $ (call all-makefiles-under, $ (LOCAL_PATH ))

Indicates the files that need to build sub-directories under this directory. In this way, the compilation system will search for Android. mk in the sub-directories under the current directory to compile other programs such as so.

OVER