SRC_HC_OPTS += -fglasgow-exts -cpp -Iinclude -\#include HsBase.h
SRC_HSC2HS_OPTS += -Iinclude -I$(FPTOOLS_TOP)/ghc/includes
-# Make sure we can get hold of regex.h
+# If there is no system-supplied POSIX regex library, use our own
ifneq "$(HavePosixRegex)" "YES"
+# Make sure we can get hold of regex.h
SRC_HC_OPTS += -Icbits/regex
SRC_HSC2HS_OPTS += -Icbits/regex
endif