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Builds have been broken since reworking autogeneration in c618f91 and related, this gets fixed here by applying similar qstr generation logic for the msvc builds: c files are only preprocessed when changed (or not yet preprocessed) and the concatenated output is fed into makeqstrdefs.py. To speed up this process, the concatenated output is already filtered to contain only lines which makeqstrdefs really needs: this makes the qstr generation stage about twice as fast (checked on different machines).
This is experimental, community-supported Windows port of MicroPython. It is based on Unix port, and expected to remain so. The port requires additional testing, debugging, and patches. Please consider to contribute. To cross-compile under Debian/Ubuntu Linux system: sudo apt-get install gcc-mingw-w64 make CROSS_COMPILE=i686-w64-mingw32- If for some reason the mingw-w64 crosscompiler is not available, you can try mingw32 instead, but it comes with a really old gcc which may produce some spurious errors (you may need to disable -Werror): sudo apt-get install mingw32 mingw32-binutils mingw32-runtime make CROSS_COMPILE=i586-mingw32msvc- To compile under Cygwin: Install following packages using cygwin's setup.exe: mingw64-i686-gcc-core, mingw64-x86_64-gcc-core, make Build using: make CROSS_COMPILE=i686-w64-mingw32- or for 64bit: make CROSS_COMPILE=x86_64-w64-mingw32- To compile using Visual Studio 2013 (or higher): Open micropython.vcxproj and build To compile using Visual Studio 2013 (or higher) commandline: msbuild micropython.vcxproj To run on Linux using Wine: The default build (MICROPY_USE_READLINE=1) uses extended Windows console functions and thus should be run using "wineconsole" tool. Depending on the Wine build configuration, you may also want to select the curses backend which has the look&feel of a standard Unix console: wineconsole --backend=curses ./micropython.exe For more info, see https://www.winehq.org/docs/wineusr-guide/cui-programs If built without line editing and history capabilities (MICROPY_USE_READLINE=0), the resulting binary can be built using standard "wine" tool.