From: Alex Gamper on
Has anybody managed to get a working compiler build on cygwin and
targeting mingw-w64 (ie --target=x86_64-w64-mingw32)

I have managed to build one but gnatmake fails to link a very simple
hello world app. The linker complains about unresolved references
(namely __gnat_eh_personality_sj and __gnat_begin_handler and
__gnat_handler)

I am fairly sure this has to do with the linker linking the wrong libada
(it should use one that supports sjlj exceptions) But I dont know how to
build the correct version.

Any ideas anyone ???