(second attempt)

Hi.

I'm using opensuse tumbleweed on a remote CI server for building some of my
windows project. And since the container size is huge I did some investigations
and it turns out that execs size for mingw32-cross-{gcc,cpp,gcc-c++} is very
big, for instance the size of the cc1 executable is over 200 megabytes. I'm
myself is on windows so my possibilities are limited, but the msys2 file
utility said that the exec files contain some debug info.

(bugzilla prefilled cc:alan@xamarin.com breaks the report attempt)