title: Installing Perl module LWP::Protocol::https
body: <p>I was trying to connect to a remote host via LWP::UserAgent, but when I was trying to make it work with HTTPS I received a message that</p>
  
  <blockquote>
    <p>LWP::Protocol::https need to be installed. (Perl 5.10.1, CentOS 6)</p>
  </blockquote>
  
  <p>I've tried to install this module with "CPAN" and with "make" and there were some errors. I've also tried to make a forced install of <code>LWP::Protocol::https</code>, now it is in list of installed modules (<code>ExtUtils::Installed</code> shows it), but the script still writes me 501 Protocol scheme 'https' is not supported (<code>LWP::Protocol::https</code> not installed).</p>
  
  <p>First I needed to add <code>ExtUtils::CBuilder</code> and <code>ExtUtils::MakeMaker</code>. Then I've tried to install <code>Crypt::SSLeay</code>, but I receive these messages:</p>
  
  <pre><code>Crypt-SSLeay-0.64/t/
  Crypt-SSLeay-0.64/TODO
  Crypt-SSLeay-0.64/typemap
  Crypt-SSLeay-0.64/t/00-basic.t
  Crypt-SSLeay-0.64/t/01-connect.t
  Crypt-SSLeay-0.64/t/02-live.t
  Crypt-SSLeay-0.64/lib/Crypt/
  Crypt-SSLeay-0.64/lib/Net/
  Crypt-SSLeay-0.64/lib/Net/SSL.pm
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/Conn.pm
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/CTX.pm
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/Err.pm
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/MainContext.pm
  Crypt-SSLeay-0.64/lib/Crypt/SSLeay/X509.pm
  Crypt-SSLeay-0.64/eg/lwp-ssl-test
  Crypt-SSLeay-0.64/eg/net-ssl-test
  Crypt-SSLeay-0.64/certs/ca-bundle.crt
  Crypt-SSLeay-0.64/certs/notacacert.pem
  Crypt-SSLeay-0.64/certs/notacakeynopass.pem
  CPAN: File::Temp loaded ok (v0.2301)
  CPAN: Parse::CPAN::Meta loaded ok (v1.4409)
  CPAN: CPAN::Meta loaded ok (v2.132661)
  CPAN: Module::CoreList loaded ok (v2.99)
  
    CPAN.pm: Building N/NA/NANIS/Crypt-SSLeay-0.64.tar.gz
  
  The test suite can attempt to connect to public servers to ensure that the
  code is working properly. If you are behind a strict firewall or have no
  network connectivity, these tests may fail (through no fault of the code).
  Do you want to run the live tests (y/N)? [N] y
  Checking if your kit is complete...
  Looks good
  Warning (mostly harmless): No library found for -lssl32
  Warning (mostly harmless): No library found for -lssleay32
  Warning (mostly harmless): No library found for -leay32
  Generating a GNU-style Makefile
  Writing Makefile for Crypt::SSLeay
  Writing MYMETA.yml and MYMETA.json
  cp lib/Crypt/SSLeay/X509.pm blib/lib/Crypt/SSLeay/X509.pm
  cp lib/Net/SSL.pm blib/lib/Net/SSL.pm
  cp lib/Crypt/SSLeay/MainContext.pm blib/lib/Crypt/SSLeay/MainContext.pm
  cp lib/Crypt/SSLeay/Conn.pm blib/lib/Crypt/SSLeay/Conn.pm
  cp lib/Crypt/SSLeay/CTX.pm blib/lib/Crypt/SSLeay/CTX.pm
  cp SSLeay.pm blib/lib/Crypt/SSLeay.pm
  cp lib/Crypt/SSLeay/Err.pm blib/lib/Crypt/SSLeay/Err.pm
  /usr/bin/perl /usr/local/share/perl5/ExtUtils/xsubpp  -typemap /usr/share/perl5/ExtUtils/typemap -typemap typemap  SSLeay.xs &gt; SSLeay.xsc &amp;&amp; mv SSLeay.xsc SSLeay.c
  gcc -c   -D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2                                                  -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic   -DVERSION=\"0.64\" -DXS_VERSION=\"0.64\" -fPIC "-I/usr/lib64/perl5/CORE"   SSLeay.c
  SSLeay.xs:35:25: error: openssl/ssl.h: No such file or directory
  SSLeay.xs:36:28: error: openssl/crypto.h: No such file or directory
  SSLeay.xs:37:25: error: openssl/err.h: No such file or directory
  SSLeay.xs:38:26: error: openssl/rand.h: No such file or directory
  SSLeay.xs:39:28: error: openssl/pkcs12.h: No such file or directory
  SSLeay.xs:55: warning: type defaults to ?-=int?-= in declaration of ?-=SSL?-=
  SSLeay.xs:55: error: expected ?-=;?-=, ?-=,?-= or ?-=)?-= before ?-=*?-= token
  SSLeay.xs: In function ?-=XS_Crypt__SSLeay__Err_get_error_string?-=:
  SSLeay.xs:98: warning: implicit declaration of function ?-=ERR_get_error?-=
  SSLeay.xs:101: warning: implicit declaration of function ?-=ERR_error_string?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_new?-=:
  SSLeay.c:276: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:276: error: (Each undeclared identifier is reported only once
  SSLeay.c:276: error: for each function it appears in.)
  SSLeay.c:276: error: ?-=RETVAL?-= undeclared (first use in this function)
  SSLeay.xs:114: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.xs:120: warning: implicit declaration of function ?-=SSLeay_add_all_algorithms?-=
  SSLeay.xs:121: warning: implicit declaration of function ?-=SSL_load_error_strings?-=
  SSLeay.xs:122: warning: implicit declaration of function ?-=ERR_load_crypto_strings?-=
  SSLeay.xs:123: warning: implicit declaration of function ?-=SSL_library_init?-=
  SSLeay.xs:129: warning: implicit declaration of function ?-=RAND_load_file?-=
  SSLeay.xs:134: warning: implicit declaration of function ?-=RAND_seed?-=
  SSLeay.xs:138: warning: implicit declaration of function ?-=SSL_CTX_new?-=
  SSLeay.xs:138: warning: implicit declaration of function ?-=SSLv23_client_method?-=
  SSLeay.xs:141: warning: implicit declaration of function ?-=SSLv3_client_method?-=
  SSLeay.xs:146: warning: implicit declaration of function ?-=SSLv2_client_method?-=
  SSLeay.xs:153: warning: implicit declaration of function ?-=SSL_CTX_set_options?-=
  SSLeay.xs:153: error: ?-=SSL_OP_ALL?-= undeclared (first use in this function)
  SSLeay.xs:154: warning: implicit declaration of function ?-=SSL_CTX_set_default_verify_paths?-=
  SSLeay.xs:155: warning: implicit declaration of function ?-=SSL_CTX_set_verify?-=
  SSLeay.xs:155: error: ?-=SSL_VERIFY_NONE?-= undeclared (first use in this function)
  SSLeay.c:272: warning: unused variable ?-=packname?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_free?-=:
  SSLeay.c:336: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:336: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:340: error: expected expression before ?-=)?-= token
  SSLeay.c:346: warning: implicit declaration of function ?-=SSL_CTX_free?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_set_cipher_list?-=:
  SSLeay.c:359: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:359: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:367: error: expected expression before ?-=)?-= token
  SSLeay.c:373: warning: implicit declaration of function ?-=SSL_CTX_set_cipher_list?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_use_certificate_file?-=:
  SSLeay.c:387: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:387: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:397: error: expected expression before ?-=)?-= token
  SSLeay.c:403: warning: implicit declaration of function ?-=SSL_CTX_use_certificate_file?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_use_PrivateKey_file?-=:
  SSLeay.c:417: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:417: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:427: error: expected expression before ?-=)?-= token
  SSLeay.c:433: warning: implicit declaration of function ?-=SSL_CTX_use_PrivateKey_file?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_use_pkcs12_file?-=:
  SSLeay.c:447: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:447: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.xs:188: error: ?-=EVP_PKEY?-= undeclared (first use in this function)
  SSLeay.xs:188: error: ?-=pkey?-= undeclared (first use in this function)
  SSLeay.xs:189: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.xs:189: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.xs:190: warning: implicit declaration of function ?-=STACK_OF?-=
  SSLeay.xs:190: error: ?-=ca?-= undeclared (first use in this function)
  SSLeay.xs:191: error: ?-=PKCS12?-= undeclared (first use in this function)
  SSLeay.xs:191: error: ?-=p12?-= undeclared (first use in this function)
  SSLeay.c:464: error: expected expression before ?-=)?-= token
  SSLeay.xs:194: warning: implicit declaration of function ?-=d2i_PKCS12_fp?-=
  SSLeay.xs:198: warning: implicit declaration of function ?-=PKCS12_parse?-=
  SSLeay.xs:200: warning: implicit declaration of function ?-=SSL_CTX_use_PrivateKey?-=
  SSLeay.xs:201: warning: implicit declaration of function ?-=EVP_PKEY_free?-=
  SSLeay.xs:204: warning: implicit declaration of function ?-=SSL_CTX_use_certificate?-=
  SSLeay.xs:205: warning: implicit declaration of function ?-=X509_free?-=
  SSLeay.xs:208: warning: implicit declaration of function ?-=PKCS12_free?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_check_private_key?-=:
  SSLeay.c:502: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:502: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:508: error: expected expression before ?-=)?-= token
  SSLeay.c:514: warning: implicit declaration of function ?-=SSL_CTX_check_private_key?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__CTX_set_verify?-=:
  SSLeay.c:528: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:528: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.c:537: error: expected expression before ?-=)?-= token
  SSLeay.xs:230: error: ?-=SSL_VERIFY_NONE?-= undeclared (first use in this function)
  SSLeay.xs:234: warning: implicit declaration of function ?-=SSL_CTX_load_verify_locations?-=
  SSLeay.xs:235: error: ?-=SSL_VERIFY_PEER?-= undeclared (first use in this function)
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_new?-=:
  SSLeay.c:572: error: ?-=SSL_CTX?-= undeclared (first use in this function)
  SSLeay.c:572: error: ?-=ctx?-= undeclared (first use in this function)
  SSLeay.xs:249: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.xs:249: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:578: error: ?-=RETVAL?-= undeclared (first use in this function)
  SSLeay.c:582: error: expected expression before ?-=)?-= token
  SSLeay.xs:251: warning: implicit declaration of function ?-=SSL_new?-=
  SSLeay.xs:252: warning: implicit declaration of function ?-=SSL_set_connect_state?-=
  SSLeay.xs:266: warning: implicit declaration of function ?-=SSL_set_info_callback?-=
  SSLeay.xs:266: error: ?-=InfoCallback?-= undeclared (first use in this function)
  SSLeay.xs:273: warning: implicit declaration of function ?-=SSL_set_fd?-=
  SSLeay.c:570: warning: unused variable ?-=packname?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_free?-=:
  SSLeay.c:628: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:628: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:632: error: expected expression before ?-=)?-= token
  SSLeay.c:638: warning: implicit declaration of function ?-=SSL_free?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_set_fd?-=:
  SSLeay.c:651: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:651: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:659: error: expected expression before ?-=)?-= token
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_connect?-=:
  SSLeay.c:679: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:679: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:685: error: expected expression before ?-=)?-= token
  SSLeay.c:691: warning: implicit declaration of function ?-=SSL_connect?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_accept?-=:
  SSLeay.c:705: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:705: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:711: error: expected expression before ?-=)?-= token
  SSLeay.c:717: warning: implicit declaration of function ?-=SSL_accept?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_write?-=:
  SSLeay.c:731: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:731: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:743: error: expected expression before ?-=)?-= token
  SSLeay.xs:333: warning: implicit declaration of function ?-=SSL_write?-=
  SSLeay.xs:334: warning: implicit declaration of function ?-=SSL_get_error?-=
  SSLeay.xs:345: error: ?-=SSL_ERROR_WANT_READ?-= undeclared (first use in this function)
  SSLeay.xs:346: error: ?-=SSL_ERROR_WANT_WRITE?-= undeclared (first use in this function)
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_read?-=:
  SSLeay.c:811: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:811: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:825: error: expected expression before ?-=)?-= token
  SSLeay.xs:398: warning: implicit declaration of function ?-=SSL_read?-=
  SSLeay.xs:412: error: ?-=SSL_ERROR_WANT_READ?-= undeclared (first use in this function)
  SSLeay.xs:413: error: ?-=SSL_ERROR_WANT_WRITE?-= undeclared (first use in this function)
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_get_peer_certificate?-=:
  SSLeay.c:898: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:898: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:899: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:899: error: ?-=RETVAL?-= undeclared (first use in this function)
  SSLeay.c:903: error: expected expression before ?-=)?-= token
  SSLeay.c:909: warning: implicit declaration of function ?-=SSL_get_peer_certificate?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_get_verify_result?-=:
  SSLeay.c:924: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:924: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:929: error: expected expression before ?-=)?-= token
  SSLeay.xs:432: warning: implicit declaration of function ?-=SSL_get_verify_result?-=
  SSLeay.xs:432: error: ?-=X509_V_OK?-= undeclared (first use in this function)
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_get_shared_ciphers?-=:
  SSLeay.c:951: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:951: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:960: error: expected expression before ?-=)?-= token
  SSLeay.xs:442: warning: implicit declaration of function ?-=SSL_get_shared_ciphers?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__Conn_get_cipher?-=:
  SSLeay.c:981: error: ?-=SSL?-= undeclared (first use in this function)
  SSLeay.c:981: error: ?-=ssl?-= undeclared (first use in this function)
  SSLeay.c:987: error: expected expression before ?-=)?-= token
  SSLeay.xs:450: warning: implicit declaration of function ?-=SSL_get_cipher?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__X509_free?-=:
  SSLeay.c:1037: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:1037: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.c:1041: error: expected expression before ?-=)?-= token
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__X509_subject_name?-=:
  SSLeay.c:1060: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:1060: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.c:1068: error: expected expression before ?-=)?-= token
  SSLeay.xs:475: warning: implicit declaration of function ?-=X509_NAME_oneline?-=
  SSLeay.xs:475: warning: implicit declaration of function ?-=X509_get_subject_name?-=
  SSLeay.xs:477: warning: implicit declaration of function ?-=OPENSSL_free?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__X509_issuer_name?-=:
  SSLeay.c:1092: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:1092: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.c:1100: error: expected expression before ?-=)?-= token
  SSLeay.xs:487: warning: implicit declaration of function ?-=X509_get_issuer_name?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__X509_get_notBeforeString?-=:
  SSLeay.c:1124: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:1124: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.c:1130: error: expected expression before ?-=)?-= token
  SSLeay.xs:497: warning: implicit declaration of function ?-=X509_get_notBefore?-=
  SSLeay.c: In function ?-=XS_Crypt__SSLeay__X509_get_notAfterString?-=:
  SSLeay.c:1151: error: ?-=X509?-= undeclared (first use in this function)
  SSLeay.c:1151: error: ?-=cert?-= undeclared (first use in this function)
  SSLeay.c:1157: error: expected expression before ?-=)?-= token
  SSLeay.xs:505: warning: implicit declaration of function ?-=X509_get_notAfter?-=
  make: *** [SSLeay.o] Error 1
    NANIS/Crypt-SSLeay-0.64.tar.gz
    make -- NOT OK
  CPAN: YAML loaded ok (v0.84)
  Running make test
    Can't test without successful make
  Running make install
    Make had returned bad status, install seems impossible
  Failed during this command:
   NANIS/Crypt-SSLeay-0.64.tar.gz               : make NO
  </code></pre>