Android, autoconf and arc4random_buf()

[anttikantee]

Seems like some versions of Android provide arc4random_buf() in libc, but fail to provide a prototype for it. This causes autoconf to think Android is a HAVE_ARC4RANDOM_BUF target, but librumpuser fails to compile due to no prototype and proper warning flags.

Possibilities:

• support only later versions of Android which apparently bother to supply a prototype (my suggestion)
• add some hacks, maims and kludges into librumpuser/configure and/or buildrump.sh

[anttikantee]

Same thing for clock_nanosleep()

[justincormack]

Ok, I fixed these upstream...

BUT

I am inclined to drop support for Android before Lollipop, as basically most of the stupid issues like wrong prototypes, missing prototypes etc have been fixed.

[anttikantee]

watch me not mind ;)

[justincormack]

Still have to get it to compile though ;-)

[justincormack]

Come to the conclusion that the Ubuntu Android bionic is completely bogus. Going to switch to the official compilers. Need to fix the fact that it doesnt have -lpthread though.