Brenton Bostick cdf248b1e2 Fix build problem related to unified headers
Since NDKr15 (released 2017), unified headers are used by default [1]

Remove -isystem option that was passing bad values to command-line.

The actual value being passed to command-line was:
```
-isystem DK/sysroot/usr/include/RIPLE
```

because of using $NDK and $TRIPLE instead of $(NDK) and $(TRIPLE)

But regardless, $NDK and $TRIPLE were never actually defined values and were just
place-holders mentioned in [1]

[1] https://android.googlesource.com/platform/ndk/+/ndk-release-r16/docs/UnifiedHeaders.md
2022-12-05 10:34:12 -05:00
..
2020-10-21 14:18:29 -07:00
2020-10-21 14:18:29 -07:00