[BUG] NDK ignore the APP_STL variable

[vvb2060]

Description

The prefab requires c++_static, I added APP_STL := c++_static to Application.mk. However, NDK ignored this variable when the cpp file did not exist in LOCAL_SRC_FILES, make build fail: error: undefined reference to 'operator delete(void*)'

test case: vvb2060/XposedDetector@334279e vvb2060/XposedDetector@5cca1de
log: https://github.com/vvb2060/XposedDetector/runs/1551353201?check_suite_focus=true#step:5:60

Environment Details

• NDK Version: 21.3.6528147
• Build system: ndk-build
• Host OS: Mac and Ubuntu
• ABI: ALL
• NDK API level: 21
• Device API level: N/A

[DanAlbert]

Just to make sure I've understood the test case, the imported library uses C++ but the importing code does not?

[vvb2060]

prefab use c++, LOCAL_MODULE only has .c file: LOCAL_SRC_FILES := vvb2060.c

[DanAlbert]

Gotcha. That's a prefab bug then. Refiled as google/prefab#125