diff -up unzip60/unix/configure.bzip2-configure unzip60/unix/configure

--- unzip60/unix/configure.bzip2-configure	2009-04-16 21:25:12.000000000 +0200

+++ unzip60/unix/configure	2009-11-18 11:22:14.598389194 +0100

@@ -640,7 +640,24 @@ else

     D_USE_BZ2="-DUSE_BZIP2"

     L_BZ2="${BZLF} -lbz2"

   else

-    echo "-- bzip2 sources not found - no bzip2 support"

+    echo "  Check if OS already has bzip2 library installed"

+    cat > conftest.c << _EOF_

+#include "bzlib.h"

+int main()

+{

+  bz_stream strm;

+  BZ2_bzCompressEnd(&strm);

+  return 0;

+}

+_EOF_

+    $CC $CFLAGS -o conftest conftest.c -lbz2 > /dev/null 2>/dev/null

+    if test $? -eq 0; then

+      echo "-- OS supports bzip2 - linking in bzip2"

+      D_USE_BZ2="-DUSE_BZIP2"

+      L_BZ2="${BZLF} -lbz2"

+    else

+      echo "-- Either bzlib.h or libbz2.a not found - no bzip2"

+    fi

   fi

 fi