Disable all coreutils calls in the Makefile which we do not have at this
point of the bootstrap. ranlib can be unconditionally disabled as we do not
have it either.

diff -r -N -U3 Makefile Makefile
--- Makefile	2019-07-13 18:50:05.000000000 +0100
+++ Makefile	2021-01-14 15:45:17.558516299 +0000
@@ -21,7 +21,7 @@
 LDFLAGS=
 
 BIGFILES=-D_FILE_OFFSET_BITS=64
-CFLAGS=-Wall -Winline -O2 -g $(BIGFILES)
+CFLAGS=-Wall -Winline -O2 -g $(BIGFILES) -I .
 
 # Where you want it installed when you do 'make install'
 PREFIX=/usr/local
@@ -44,13 +44,7 @@
 	$(CC) $(CFLAGS) $(LDFLAGS) -o bzip2recover bzip2recover.o
 
 libbz2.a: $(OBJS)
-	rm -f libbz2.a
 	$(AR) cq libbz2.a $(OBJS)
-	@if ( test -f $(RANLIB) -o -f /usr/bin/ranlib -o \
-		-f /bin/ranlib -o -f /usr/ccs/bin/ranlib ) ; then \
-		echo $(RANLIB) libbz2.a ; \
-		$(RANLIB) libbz2.a ; \
-	fi
 
 check: test
 test: bzip2
@@ -114,7 +108,6 @@
 	sample1.tst sample2.tst sample3.tst
 
 blocksort.o: blocksort.c
-	@cat words0
 	$(CC) $(CFLAGS) -c blocksort.c
 huffman.o: huffman.c
 	$(CC) $(CFLAGS) -c huffman.c