$ cpanm Net::SSLeay
--> Working on Net::SSLeay
Fetching http://www.cpan.org/authors/id/M/MI/MIKEM/Net-SSLeay-1.85.tar.gz ... OK
Configuring Net-SSLeay-1.85 ... OK
Building and testing Net-SSLeay-1.85 ... FAIL
! Installing Net::SSLeay failed. See ~/.cpanm/work/1555363377.6081/build.log for details. Retry with --force to force install it.

$ vi ~/.cpanm/work/1555363377.6081/build.log
Checking configure dependencies from META.yml
Checking if you have ExtUtils::MakeMaker 6.58 ... Yes (7.34)
Configuring Net-SSLeay-1.85
Running Makefile.PL
*** Found OpenSSL-1.0.2k installed in /usr
*** Be sure to use the same compiler and options to compile your OpenSSL, perl,
    and Net::SSLeay. Mixing and matching compilers is not supported.