issue #5429: treat warning as eror on iOS
issue #5429: treat warning as error on Mac
Merge pull request #6939 from dabingnn/v3FixAndroid

V3 fix android
[Jenkins][ci skip] Fix proxy address in post-build.py
Merge pull request #6953 from lmskater/fix-post-build

[Jenkins][ci skip] Fix proxy address in post-build.py
Merge pull request #6944 from minggo/treat-warning-as-error

Treat warning as error on iOS and Mac