Makefile with PARALLEL_FITS implementation

Makefile

@@ -33,9 +33,11 @@ endif
 # write the final image
 OPT += -DWRITE_IMAGE
 # perform w-stacking phase correction
-#OPT += -DPHASE_ON
+OPT += -DPHASE_ON
 # Support CFITSIO
 OPT += -DFITSIO
+# Perform true parallel fits writing
+OPT += -DPARALLEL_FITS
 
 ifeq (FITSIO,$(findstring FITSIO,$(OPT)))
 	LIBS += -L$(FITSIO_LIB) -lcfitsio