Checking if your kit is complete...
Looks good
Note (probably harmless): No library found for -lrsync
Writing Makefile for File::Rdiff
cp Rdiff.pm blib/lib/File/Rdiff.pm
/home/cpanrun/ia64-lp64/build/5.8.2/bin/perl /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp  -typemap /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap typemap  Rdiff.xs > Rdiff.xsc && mv Rdiff.xsc Rdiff.c
cc -c   -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings +DD64 -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +DSitanium2 +Ofltacc=strict   -DVERSION=\"0.02\" -DXS_VERSION=\"0.02\" +Z "-I/home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi-LP64/CORE"   Rdiff.c
Error 112: "Rdiff.xs", line 5 # Include file "rsync.h" not found.
    #include "rsync.h"
             ^^^^^^^^^
Error 20: "Rdiff.xs", line 18 # ',' expected before '*'.
    typedef rs_stats_t *    File__Rdiff__Stats;
                       ^                       
Error 20: "Rdiff.xs", line 19 # ',' expected before '*'.
    typedef rs_signature_t *File__Rdiff__Signature;
                           ^                       
Error 419: "Rdiff.xs", line 22 # 'rs_buffers_t' is used as a type, but has not been defined as a type.
      rs_buffers_t rs;
      ^^^^^^^^^^^^    
Error 419: "Rdiff.xs", line 30 # 'rs_job_t' is used as a type, but has not been defined as a type.
      rs_job_t *rs;
      ^^^^^^^^     
Error 20: "Rdiff.xs", line 87 # ';' expected before 'copy_cb'.
    copy_cb (void *cb, off_t pos, size_t *len, void **buf)
    ^^^^^^^                                               
Error 172: "Rdiff.xs", line 119 # Undeclared variable 'RS_DONE'.
          return RS_DONE;
                 ^^^^^^^ 
Error 172: "Rdiff.xs", line 166 # Undeclared variable 'RS_LOG_WARNING'.
            static int oldlevel = RS_LOG_WARNING; /* see BOOT: */
                                  ^^^^^^^^^^^^^^                 
Warning 942: "Rdiff.xs", line 201 # Types 'const char *' and 'int' are not assignment-compatible.
            RETVAL = newSVpv (rs_strerror (resultcode), 0);
                     ^^^^^^^                               
Error 186: "Rdiff.xs", line 262 # Left side of '.' requires a struct object; type found was 'int'.
            self->rs.eof_in = 1;
            ^^^^^^^^            
Error 186: "Rdiff.xs", line 278 # Left side of '.' requires a struct object; type found was 'int'.
                              : self->rs.eof_in ? -1
                                ^^^^^^^^            
Error 172: "Rdiff.c", line 575 # Undeclared variable 'RS_DEFAULT_BLOCK_LEN'.
                new_block_len = RS_DEFAULT_BLOCK_LEN;
                                ^^^^^^^^^^^^^^^^^^^^ 
Error 172: "Rdiff.c", line 581 # Undeclared variable 'RS_DEFAULT_STRONG_LEN'.
                strong_sum_len = RS_DEFAULT_STRONG_LEN;
                                 ^^^^^^^^^^^^^^^^^^^^^ 
Error 699: "Rdiff.c", line 581 # Error limit reached; halting compilation.
                strong_sum_len = RS_DEFAULT_STRONG_LEN;
                                 ^^^^^^^^^^^^^^^^^^^^^ 
make: *** [Rdiff.o] Error 2