diff -cr compress.orig/Makefile compress/Makefile
*** compress.orig/Makefile	Mon Dec  3 03:42:52 1990
--- compress/Makefile	Mon Dec  3 03:49:04 1990
***************
*** 1,10 ****
! bindir=/usr/local
  sacred=-DSACREDMEM=256000
! system=-DBSD4_2
! CFLAGS=-O
  
  compress: compress.c USERMEM
! 	cc $(CFLAGS) $(sacred) $(system) -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.  Set it to zero, for physical memory
--- 1,11 ----
! bindir=/usr/local/bin
  sacred=-DSACREDMEM=256000
! system=
! CC= gcc
! CFLAGS=-O -DMINIX_13
  
  compress: compress.c USERMEM
! 	$(CC) $(CFLAGS) $(sacred) $(system) -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.  Set it to zero, for physical memory
diff -cr compress.orig/compress.c compress/compress.c
*** compress.orig/compress.c	Mon Dec  3 03:43:36 1990
--- compress/compress.c	Mon Dec  3 03:47:30 1990
***************
*** 508,514 ****
--- 508,516 ----
  	signal ( SIGINT, onintr );
  
  #ifndef MSDOS
+ #ifndef MINIX_13
  	signal ( SIGSEGV, oops );
+ #endif
      }
  #endif