Description: Xwalk on Android already provides a package tool, detail can refer https://crosswalk-project.org/#documentation/getting_started/building_an_application/Packaging-for-Android Currently, web developers need to download different "xwalk_app_template" for different archs(x86 and arm). I want to improve the user experience by providing one for all arch template, and developer can choose which arch to build apk for by command line args. By default, the tool will generate apks for each of the archs it support.
Affected component: 1. Android package tool 2. Build infrastructure 3. Release infrastructure Related feature: (Jira ID) https://crosswalk-project.org/jira/browse/XWALK-598 Target Release: (Crosswalk N) Crosswalk 3 Implementation details: To achieve this, two parts of implementation is needed. 1. For package tool, current behavior is, that if it contains native libraries more than one archs, it will package them together into the target apk. a. Change the process to iterate over the native libraries and create apk for each one of them, and name the output by using abi name as suffix. b. If developer specifies the arch by -arch=x86/arm, the tool will check if the corresponding native library is available and then create the apk. 2. For build system, we need to get the template containing both arm and x86 native libraries. a. After investigation, it's impossible to make xwalk build both arm/x86 libraries in one compilation. It's because, which arch to build is decided by the "target_default" setting in "src/build/common.gypi". b. If built from the same code base, xwalk_app_template for x86 and arm should only be different at "libs/<arch_name>/libxwalkcore.so", so merge them together can make a template meets our requirement. c. For build infrastructure, to ensure the same code base, could use "gyp -Goutput_dir=out_<arch>" to build different arch in different folder from the same code, and add step to merge the output together. d. For release infrastructure, the code base is already guaranteed same by the xwalk version, just need to add additional step to merge the template. Thanks, Shiliu.
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