Note (probably harmless): No library found for '-Writing Makefile for Crypt::OpenSSL::DSA y found for '-lcrypto' cp lib/Crypt/OpenSSL/DSA.pm blib\lib\Crypt\OpenSSL\DSA.pm cp lib/Crypt/OpenSSL/DSA/Signature.pod blib\lib\Crypt\OpenSSL\DSA\SignatNMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. uild\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib D:\cpanrun\build\5-6-1\lib\ExtUtils/xsubpp -typemap D:\cpanrun\build\5-6-1\lib\ExtUtils\typemap -typemap typemap DSA.xs > DSA.xsc && D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -MExtUtils::Command -e mv DSA.xsc DSA.c cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DPERL_MSVCRT_READFIX -O1 -MD -Zi -DNDEBUG -DVERSION=\"0.13\" -DXS_VERSION=\"0.13\" -ID:\cpanrun\build\5-6-1\lib\CORE -DPERL5 DSA.c DSA.c DSA.xs(11) : fatal error C1083: Cannot open include file: 'openssl/bn.h': No such file or directory