tree 3b7719f5e88bde1572dd51eb158c3bf02963ab67
parent d32018fe69bb90875e6e95c0e949cda98cd88044
author Anestis Bechtsoudis <anestis@census-labs.com> 1476263074 +0300
committer Anestis Bechtsoudis <anestis@census-labs.com> 1476263074 +0300
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[Android] Adjust makefile for NDK R13 compatibility

GCC compatibility is deprecated across the entire Android ecosystem
including the provided NDK toolchains. As explained in R13 changelog
GCC is no longer supported, although not remove yet [1].

Since CLANG toolchains are the new defaults, adjust makefile selection in
order to be aligned with ANDROID_CLANG flag value and be backwards
compatible with older NDKs that include GCC version 4.9

Honggfuzz was defaulting to GCC and both unwinding & ptrace backends
have been heavily tested against it. CLANG was also supported, although
not tested at the same extend. As such don't default to CLANG for now
until some more testing is performed.

[1] https://developer.android.com/ndk/downloads/index.html#rel

Signed-off-by: Anestis Bechtsoudis <anestis@census-labs.com>