Hi Deech, Not sure this is helpful, as I haven’t tested it on Windows 10, but here are the gcc/ghc compile/link options I use for a project that has a similar need: CC = gcc CFLAGS += -I/usr/lib/ghc-7.4.2/include/ -g -fPIC HC = ghc HC_OPTS = -cpp -O3 $(EXTRA_HC_OPTS) EXTRA_HC_OPTS = -package parsec -dynamic -fPIC -rtsopts HC_LOPTS = -shared -dynamic -package parsec -lHSrts -lm -lffi -lrt -db