Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lcrypto Writing Makefile for Crypt::OpenSSL::SMIME cp SMIME.pm blib/lib/Crypt/OpenSSL/SMIME.pm AutoSplitting blib/lib/Crypt/OpenSSL/SMIME.pm (blib/lib/auto/Crypt/OpenSSL/SMIME) /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 perlobject.map -typemap typemap SMIME.xs > SMIME.xsc && mv SMIME.xsc SMIME.c Please specify prototyping behavior for SMIME.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=\"0.02\" -DXS_VERSION=\"0.02\" +Z "-I/home/cpanrun/pa-risc1.1/build/5.8.2/lib/5.8.2/PA-RISC1.1-thread-multi/CORE" SMIME.c cpp: "SMIME.xs", line 3: error 4036: Can't open include file 'openssl/crypto.h'. cpp: "SMIME.xs", line 4: error 4036: Can't open include file 'openssl/pem.h'. cpp: "SMIME.xs", line 5: error 4036: Can't open include file 'openssl/err.h'. cpp: "SMIME.xs", line 6: error 4036: Can't open include file 'openssl/pkcs12.h'. cpp: "SMIME.xs", line 7: error 4036: Can't open include file 'openssl/x509.h'. make: *** [SMIME.o] Error 1