diff -ru bzip2-1.0.5/Makefile bzip2-1.0.5-patched/Makefile
--- bzip2-1.0.5/Makefile	2008-02-14 07:39:18.000000000 -0500
+++ bzip2-1.0.5-patched/Makefile	2008-06-11 19:28:40.000000000 -0400
@@ -11,6 +11,9 @@
 # This program is released under the terms of the license contained
 # in the file LICENSE.
 # ------------------------------------------------------------------
+# This Makefile builds a shared version of the library,
+# libbz2.1.0.2.dylib, with install_name .../libbz2.1.dylib,
+# on Darwin and Mac OS X.
 
 SHELL=/bin/sh
 
@@ -21,7 +24,7 @@
 LDFLAGS=
 
 BIGFILES=-D_FILE_OFFSET_BITS=64
-CFLAGS=-Wall -Winline -O2 -g $(BIGFILES)
+CFLAGS=-fno-common -Wall -Winline -O2 -g $(BIGFILES)
 
 # Where you want it installed when you do 'make install'
 PREFIX=/usr/local
@@ -35,9 +38,9 @@
       decompress.o \
       bzlib.o
 
-all: libbz2.a bzip2 bzip2recover test
+all: libbz2.dylib bzip2 bzip2recover test
 
-bzip2: libbz2.a bzip2.o
+bzip2: libbz2.dylib bzip2.o
 	$(CC) $(CFLAGS) $(LDFLAGS) -o bzip2 bzip2.o -L. -lbz2
 
 bzip2recover: bzip2recover.o
@@ -52,15 +55,21 @@
 		$(RANLIB) libbz2.a ; \
 	fi
 
+libbz2.dylib: $(OBJS)
+	rm -f libbz2.dylib libbz2.*.dylib
+	$(CC) -dynamiclib -o libbz2.@VERSION@.dylib $(OBJS) -install_name $(PREFIX)/lib/libbz2.1.dylib -compatibility_version 1.0.1 -current_version @VERSION@
+	ln -s libbz2.@VERSION@.dylib libbz2.1.dylib
+	ln -s libbz2.@VERSION@.dylib libbz2.dylib
+
 check: test
 test: bzip2
 	@cat words1
-	./bzip2 -1  < sample1.ref > sample1.rb2
-	./bzip2 -2  < sample2.ref > sample2.rb2
-	./bzip2 -3  < sample3.ref > sample3.rb2
-	./bzip2 -d  < sample1.bz2 > sample1.tst
-	./bzip2 -d  < sample2.bz2 > sample2.tst
-	./bzip2 -ds < sample3.bz2 > sample3.tst
+	DYLD_LIBRARY_PATH=. ./bzip2 -1  < sample1.ref > sample1.rb2
+	DYLD_LIBRARY_PATH=. ./bzip2 -2  < sample2.ref > sample2.rb2
+	DYLD_LIBRARY_PATH=. ./bzip2 -3  < sample3.ref > sample3.rb2
+	DYLD_LIBRARY_PATH=. ./bzip2 -d  < sample1.bz2 > sample1.tst
+	DYLD_LIBRARY_PATH=. ./bzip2 -d  < sample2.bz2 > sample2.tst
+	DYLD_LIBRARY_PATH=. ./bzip2 -ds < sample3.bz2 > sample3.tst
 	cmp sample1.bz2 sample1.rb2 
 	cmp sample2.bz2 sample2.rb2
 	cmp sample3.bz2 sample3.rb2
@@ -72,8 +81,9 @@
 install: bzip2 bzip2recover
 	if ( test ! -d $(PREFIX)/bin ) ; then mkdir -p $(PREFIX)/bin ; fi
 	if ( test ! -d $(PREFIX)/lib ) ; then mkdir -p $(PREFIX)/lib ; fi
-	if ( test ! -d $(PREFIX)/man ) ; then mkdir -p $(PREFIX)/man ; fi
-	if ( test ! -d $(PREFIX)/man/man1 ) ; then mkdir -p $(PREFIX)/man/man1 ; fi
+	if ( test ! -d $(PREFIX)/share ) ; then mkdir -p $(PREFIX)/share ; fi
+	if ( test ! -d $(PREFIX)/share/man ) ; then mkdir -p $(PREFIX)/share/man ; fi
+	if ( test ! -d $(PREFIX)/share/man/man1 ) ; then mkdir -p $(PREFIX)/share/man/man1 ; fi
 	if ( test ! -d $(PREFIX)/include ) ; then mkdir -p $(PREFIX)/include ; fi
 	cp -f bzip2 $(PREFIX)/bin/bzip2
 	cp -f bzip2 $(PREFIX)/bin/bunzip2
@@ -83,33 +93,35 @@
 	chmod a+x $(PREFIX)/bin/bunzip2
 	chmod a+x $(PREFIX)/bin/bzcat
 	chmod a+x $(PREFIX)/bin/bzip2recover
-	cp -f bzip2.1 $(PREFIX)/man/man1
-	chmod a+r $(PREFIX)/man/man1/bzip2.1
+	cp -f bzip2.1 $(PREFIX)/share/man/man1
+	chmod a+r $(PREFIX)/share/man/man1/bzip2.1
 	cp -f bzlib.h $(PREFIX)/include
 	chmod a+r $(PREFIX)/include/bzlib.h
-	cp -f libbz2.a $(PREFIX)/lib
-	chmod a+r $(PREFIX)/lib/libbz2.a
+	cp -f libbz2.@VERSION@.dylib $(PREFIX)/lib
+	chmod a+r $(PREFIX)/lib/libbz2.@VERSION@.dylib
+	ln -s libbz2.@VERSION@.dylib $(PREFIX)/lib/libbz2.1.dylib
+	ln -s libbz2.@VERSION@.dylib $(PREFIX)/lib/libbz2.dylib
 	cp -f bzgrep $(PREFIX)/bin/bzgrep
-	ln -s -f $(PREFIX)/bin/bzgrep $(PREFIX)/bin/bzegrep
-	ln -s -f $(PREFIX)/bin/bzgrep $(PREFIX)/bin/bzfgrep
+	ln -s -f bzgrep $(PREFIX)/bin/bzegrep
+	ln -s -f bzgrep $(PREFIX)/bin/bzfgrep
 	chmod a+x $(PREFIX)/bin/bzgrep
 	cp -f bzmore $(PREFIX)/bin/bzmore
-	ln -s -f $(PREFIX)/bin/bzmore $(PREFIX)/bin/bzless
+	ln -s -f bzmore $(PREFIX)/bin/bzless
 	chmod a+x $(PREFIX)/bin/bzmore
 	cp -f bzdiff $(PREFIX)/bin/bzdiff
-	ln -s -f $(PREFIX)/bin/bzdiff $(PREFIX)/bin/bzcmp
+	ln -s -f bzdiff $(PREFIX)/bin/bzcmp
 	chmod a+x $(PREFIX)/bin/bzdiff
-	cp -f bzgrep.1 bzmore.1 bzdiff.1 $(PREFIX)/man/man1
-	chmod a+r $(PREFIX)/man/man1/bzgrep.1
-	chmod a+r $(PREFIX)/man/man1/bzmore.1
-	chmod a+r $(PREFIX)/man/man1/bzdiff.1
-	echo ".so man1/bzgrep.1" > $(PREFIX)/man/man1/bzegrep.1
-	echo ".so man1/bzgrep.1" > $(PREFIX)/man/man1/bzfgrep.1
-	echo ".so man1/bzmore.1" > $(PREFIX)/man/man1/bzless.1
-	echo ".so man1/bzdiff.1" > $(PREFIX)/man/man1/bzcmp.1
+	cp -f bzgrep.1 bzmore.1 bzdiff.1 $(PREFIX)/share/man/man1
+	chmod a+r $(PREFIX)/share/man/man1/bzgrep.1
+	chmod a+r $(PREFIX)/share/man/man1/bzmore.1
+	chmod a+r $(PREFIX)/share/man/man1/bzdiff.1
+	echo ".so man1/bzgrep.1" > $(PREFIX)/share/man/man1/bzegrep.1
+	echo ".so man1/bzgrep.1" > $(PREFIX)/share/man/man1/bzfgrep.1
+	echo ".so man1/bzmore.1" > $(PREFIX)/share/man/man1/bzless.1
+	echo ".so man1/bzdiff.1" > $(PREFIX)/share/man/man1/bzcmp.1
 
 clean: 
-	rm -f *.o libbz2.a bzip2 bzip2recover \
+	rm -f *.o libbz2.a libbz2*.dylib bzip2 bzip2recover \
 	sample1.rb2 sample2.rb2 sample3.rb2 \
 	sample1.tst sample2.tst sample3.tst