# use `cpphs'
GHC_CPP := -cpp -pgmP cpphs -optP --cpp
-GHC_OPT = -I. -O0 -Wall -fno-warn-unused-do-bind
+GHC_OPT = -I. -O0 -Wall -fno-warn-unused-do-bind -fwarn-tabs
# see *.gdb target. also useful for profiling (-p at call)
GHC_OPT += -rtsopts # -prof -auto-all
GHC_OPT += $(GHC_CPP)