Improve redefining size in 1998/schweikh3

Now one can do

    make clobber SIZE=55555 alt

or whatever size they wish.

1998/schweikh3/Makefile

@@ -55,10 +55,13 @@ CSTD= -std=gnu90
 #
 ARCH=
 
+# variable for size, primarily for alt code
+#
+SIZE=32767
 # Defines that are needed to compile
 #
 CDEFINE= -DM0=sizeof -DM1=long -DM2=void \
-	-DM3=realloc -DM4=calloc -DM5=free -DSZ=32767
+	-DM3=realloc -DM4=calloc -DM5=free -DSZ=${SIZE}
 
 # Include files that are needed to compile
 #
@@ -138,6 +141,11 @@ ${PROG}: ${PROG}.c
 alt: data ${ALT_TARGET}
 	@${TRUE}
 
+
+${PROG}.alt: ${PROG}.alt.c
+	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
+	${LN} -sf $@ samefile.alt
+
 # data files
 #
 data: ${DATA}

1998/schweikh3/README.md

@@ -54,11 +54,10 @@ If you wish to change the size to say, 55555:
 
 
 ```sh
-make clobber CDEFINE="-DSZ=55555" alt
+make clobber SIZE=55555 alt
 ```
 
-or whatever you wish to redefine it to. See [alternate code](#alternate-code)
-below.
+or whatever you wish to redefine it to.
 
 
 ## Judges' remarks: