--- Makefile.orig	Fri Dec 30 13:26:31 1994
+++ Makefile	Fri Dec 30 13:27:28 1994
@@ -1,5 +1,6 @@
 CC=cc
-COMFLAGS=-O
+COMFLAGS=-O2
+LDFLAGS=-s
 BIN=/usr/bin
 MAN=/usr/man/man1
 #define to "l" if manuals go on /usr/man/manl
@@ -8,7 +9,7 @@
 all :	compress atob btoa
 
 compress : compress.c USERMEM
-	$(CC) $(COMFLAGS) -DUSERMEM=`cat USERMEM` -o compress compress.c
+	$(CC) $(LDFLAGS) $(COMFLAGS) -DUSERMEM=`cat USERMEM` -o compress compress.c
 
 # USERMEM may have to be set by hand.  It should contain the amount of
 # available user memory in bytes.  See the README file for more info.
@@ -16,10 +17,10 @@
 	sh usermem > USERMEM
 
 atob:	atob.c
-	$(CC) $(COMFLAGS) -o atob atob.c
+	$(CC) $(LDFLAGS) $(COMFLAGS) -o atob atob.c
 
 btoa:	btoa.c
-	$(CC) $(COMFLAGS) -o btoa btoa.c
+	$(CC) $(LDFLAGS) $(COMFLAGS) -o btoa btoa.c
 
 install: compress atob btoa zmore zcmp zdiff compressdir uncompressdir btoa.1 compress.1 compressdir.1 zmore.1 zcmp.1 tarmail untarmail
 	cp compress $(BIN)
--- usermem.orig	Tue Aug 20 19:01:57 1985
+++ usermem	Mon Jan 25 21:30:01 1999
@@ -12,13 +12,16 @@
 CLICKSIZE=512
 eval $*
 
-SIZE=0
-if test -r /usr/adm/messages	# probably the most transportable
-then
-    SIZE=`grep avail /usr/adm/messages | sed -n '$s/.*[ 	]//p'`
-fi
+# Used below to eliminate excess whitespace:
+crunch() {
+  while read line ; do
+    echo $line
+  done
+}
+
+SIZE=`cat /proc/meminfo | head -2 | tail -1 | crunch | cut -f 2 -d ' '`
 
-if test 0$SIZE -le 0		# no SIZE in /usr/adm/messages
+if test $SIZE -le 0		# no SIZE in /usr/adm/messages
 then
     if test -r $KMEM		# Readable KMEM
     then
@@ -40,11 +43,11 @@
 	if test -n "$UNIX"
 	then
 	    SIZE=`echo maxmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ 	]//p'`
-	    if test 0$SIZE -le 0
+	    if test $SIZE -le 0
 	    then
 		SIZE=`echo physmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ 	]//p'`
 	    fi
-	    SIZE=`expr 0$SIZE '*' $CLICKSIZE`
+	    SIZE=`expr $SIZE '*' $CLICKSIZE`
 	fi
     fi
 fi
@@ -61,7 +64,7 @@
 	;;
 esac
 
-if test 0$SIZE -le 0
+if test $SIZE -le 0
 then
     echo 0;exit 1
 else