-HCPPFLAGS= \
- -Dsocket=Hsocket -Dfcntl=Hfcntl -Dgettimeofday=Hgettimeofday \
- -Dsendto=Hsendto -Drecvfrom=Hrecvfrom -Dselect=Hselect -Dconnect=Hconnect \
- -Dread=Hread -Dwrite=Hwrite -Dclose=Hclose
+HCPPFLAGS:= $(foreach F, \
+ gettimeofday select \
+ socket fcntl connect close \
+ sendto recvfrom read write \
+, -D$F=H$F)