Checking if your kit is complete... Looks good Writing Makefile for IO::SendFile cp SendFile.pm blib/lib/IO/SendFile.pm AutoSplitting blib/lib/IO/SendFile.pm (blib/lib/auto/IO/SendFile) /home/cpanrun/pa-risc1.1/build/5.8.2/bin/perl /home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp -typemap /home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap typemap SendFile.xs > SendFile.xsc && mv SendFile.xsc SendFile.c Please specify prototyping behavior for SendFile.xs (see perlxs manual) cc -c -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +Onolimit +Opromote_indirect_calls +DAportable +DS2.0 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" +Z "-I/home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/PA-RISC1.1-thread-multi/CORE" SendFile.c cc: "SendFile.c", line 42: error 1621: Too few arguments for __sendfile64. cc: "SendFile.c", line 42: warning 526: Pointer implicitly converted to integral value in assignment. cc: "SendFile.c", line 42: warning 563: Argument #3 is not the correct type. make: *** [SendFile.o] Error 1