These insns are for building Hugs on mingw32. We don't want no cygwin no more :) You need to have a fptools/mk/build.mk which looks like this in order to build Hugs which has a hope of working in combined mode. WithGhcHc=ghc-4.06 # or whatever; version not v. important GhcLibWays=u # essential GhcHcOpts=-DDEBUG -fasm-x86 # -fasm-x86 is optional GhcRtsHcOpts=-optc-DDEBUG -optc-D__HUGS__ -unreg -optc-g GhcRtsCcOpts=-optc-DDEBUG -optc-g -optc-D__HUGS__ SplitObjs=NO # essential Then you need to configure like this: cd ghc autoconf cd .. autoconf ./configure --host=i386-unknown-mingw32 --enable-win32-dlls Then make boot Then cd ghc/rts/gmp/mpn/generic for f in *.c *.h ; do echo $f ; rm -f ../$f ; cp $f ../$f ; done # because mingw32 doesn't understand the symlinks that GMP makes # during make boot cd ../../.. make cd ../utils make boot make cd ../interpreter make