Makefile - works on windows + msys2

Makefile

@@ -1,18 +1,24 @@
 .DEFAULT_GOAL := all
+ifdef WINDIR
+	extn=pyd
+else
+	extn=so
+endif
 
 src = rplugin/python3
 relopt = -d:release -d:removelogger
 infoopt = -d:release
 native = FUZZY_CMOD=1
 win = --os:windows --cpu:amd64 --gcc.exe:/usr/bin/x86_64-w64-mingw32-gcc --gcc.linkerexe:/usr/bin/x86_64-w64-mingw32-gcc
+binary=fruzzy_mod.$(extn)
 
 build-debug:
 	cd $(src) && \
-		nim c --app:lib --out:fruzzy_mod.so $(infoopt)  fruzzy_mod
+		nim c --app:lib --out:$(binary) $(infoopt)  fruzzy_mod
 
 build:
 	cd $(src) && \
-		nim c --app:lib --out:fruzzy_mod.so $(relopt) fruzzy_mod
+		nim c --app:lib --out:$(binary) $(relopt) fruzzy_mod
 
 debug-single: build-debug
 	@echo Testing native mod with minimal file
@@ -39,8 +45,11 @@ test-native: build
 test: test-py test-native
 
 win:
+ifndef WINDIR
 	cd $(src) && \
 		nim c --app:lib $(win) --out:fruzzy_mod.pyd $(relopt) fruzzy_mod
+endif
+
 all: test build
 rel: win build
 	ls -al $(src)/fruzzy_mod*