It's unclear why .extern was being suppressed, it's also a little unclear how the Chromium build was working without this. None the less, it's causing problems with Android and it's more obviously correct to make these symbols as hidden. Change-Id: Id13ec238b80b8bd08d8ae923ac659835450e77f8 Reviewed-on: https://boringssl-review.googlesource.com/3800 Reviewed-by: Adam Langley <agl@google.com>kris/onging/CECPQ3_patch15