GNU Debugger Android compilation

Hello.

I have just compiled and tested GNU Debugger 7.6.1 on my tablet with
Android 4.3. But I have to fix some compilations problems to fix
compilation.
 I have tested only to run program under gdb and break point. And it
works good. May be, there is only a problem with read good program
return value. But for hello word program, this looks good.
 I don't understand autotools and etc. That I am not able to do useful
change path for you. And I have added preprocesor #ifndef directive to
one android NDK header to fix compilation problem. I have written
function tcdrain like
 int tcdrain(in fd) {return -1} to fix one link problem. But I beleave
that my experience can be helpfull for prepare gdb for compilation on
Android ARM.

If you feel interested in it, please answer me. I can share my
experience with you. I will not delete my upgraded gdb source for some
time.