Makefile.mingw32 and Makefile.mingw32.depend are intended to replace
Makefile.gcc.
To use them:
cd /d/prj/NetHack/src
cp ../sys/windows/Makefile.mingw32* .
mingw32-make -f Makefile.mingw32 clean
mingw32-make -f Makefile.mingw32 depend
mingw32-make -f Makefile.mingw32
Improvements:
Add $(USE_LUADLL) to release lua-5.4.3.dll, instead of link static
lua.lib into .exe files.
Add windres "--target" option, to fix the NetHackW.exe startup problem.
Add "-s" option to $(LDFLAGS) in release mode, to make exe/dll smaller.
Add $(CLEAN_DIR) and $(CLEAN_FILE) to track what to clean.
Remove *.tag, but use "order-only prerequisites" to make directory
before any '.o' is built.
Use make variables and functions to improve readability.
Each project has its own directory to hold object files, to fix the
interference problem between different projects, like NetHack.exe object
files were built with "-DTILES".
Add "-mconsole" option when linking NetHack.exe, to fix that sometimes
GetStdHandle returned with invalid handle error.
Add ".PHONY" statements.
Use "gcc -E -MM -MT" to implement semi-auto "Prerequisites Generating".
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