We still have issues with paths containing spaces in the build system. I have fixed some of them, but there are more (that are not easy to fix). The current bug I ran into is in rules/distdir-way-opts.mk where we make the HSC2HS_OPTS by prepending --cflag/--lflag to the beginning of CC_OPTS and LD_OPTS respectively, that doesn't know where the word breaks in CC_OPTS/LD_OPTS are supposed to be.