--- pgp/rsaref/install/unix/makefile	2018/04/24 16:41:48	1.1.1.2
+++ pgp/rsaref/install/unix/makefile	2018/04/24 16:43:12	1.1.1.3
@@ -21,6 +21,7 @@ CC = gcc
 RANLIB = ranlib
 LIB = ar
 ASM = masm
+PROTOTYPES = 1
 
 # name of temporary library script
 TEMPFILE = $(TEMP)/temp.mak
@@ -35,7 +36,7 @@ INCL =  -I. -I$(SRCDIR) -I$(STDINCDIR)
 PROG = rdemo
 
 # Normal GCC flags.
-CFLAGS = $(INCL) -O -c -DPROTOTYPES=1 -DUSEMPILIB
+CFLAGS = $(INCL) -O -c -DPROTOTYPES=$(PROTOTYPES) -DUSEMPILIB
 MFLAGS = -I. -I$(SRCDIR)
 
 # The location of the common source directory.