Add native Windows / MinGW compilability #96
Description
Using a MSys2/MinGW64 environment with these packages installed
pacman -S git make mingw-w64-x86_64-toolchain mingw-w64-x86_64-autotools msys/autoconf-wrapper automake cmake mingw-w64-x86_64-binutils
and these build steps, compilation fails at these two types of errors:
In file included from devdescr.cc:29:
jtag.h:29:10: fatal error: termios.h: No such file or directory
29 | #include <termios.h>
| ^~~~~~~~~~~
compilation terminated.
g++ -DHAVE_CONFIG_H -I. -Wall -Wextra -DENABLE_TARGET_PROGRAMMING=0 -g -O2 -MT jtag3rw.o -MD -MP -MF .deps/jtag3rw.Tpo -c -o jtag3rw.o jtag3rw.cc
jtag2usb.cc:35:10: fatal error: sys/socket.h: No such file or directory
35 | #include <sys/socket.h>
| ^~~~~~~~~~~~~~
It would be nice to not have to go through MSYS2/MSYS emulation, which does allow this program to build (see #95), but it's not as "native" as it could be.
There are forks who have adapted this to compile with MCSV (https://github.com/walx666/avarice/tree/main/src/msvc), but the termios.h implementation is all stubbed. And looking at this it appears to me it would be better to not try and search for an exact substitute for termios.h / sys/socket.h but compile-time switch in the real Windows implementation. I'm sure avrdudes/avrdude already does something like this.