What's the correct build target for MinGW-w64? I tried using
--build=x86_64-w64-mingw64
with gdb-7.11.1 and x86_64-6.1.0-release-posix-seh-rt_v5-rev0, and
it's trying to compile ser-unix.c. That doesn't seem right, and, of
course, MinGW doesn't include <sys/socket.h>.
Why do you need an explicit argument? Doesn't config.guess guess
correctly? If not, maybe your uname needs and update/upgrade?
To answer the question of "why" - on Windows, the config.guess output is
not always what you want, as it depends on how you execute that script.
In our case, we build using a cygwin environment, so config.guess
returns a cygwin triplet. So, when you actually want to build a MinGW
debugger, you have to pass the MinGW triplet explicitly.