Configurations/15-android.conf: detect NDK llvm-ar.
This excluses user from additional PATH adjustments in case NDK has
llvm-ar.
. "/$tritools-4.9/prebuilt/$host";
$user{CC} = "clang" if ($user{CC} !~ m|clang|);
$user{CROSS_COMPILE} = undef;
+ if (which("llvm-ar") =~ m|^$ndk/.*/prebuilt/([^/]+)/|) {
+ $user{AR} = "llvm-ar";
+ $user{ARFLAGS} = [ "rs" ];
+ $user{RANLIB} = ":";
+ }
} elsif (-f "$ndk/AndroidVersion.txt") { #"standalone toolchain"
my $cc = $user{CC} // "clang";
# One can probably argue that both clang and gcc should be
