Crypt::OpenSSL::Guess(3) User Contributed Perl Documentation Crypt::OpenSSL::Guess(3)

Crypt::OpenSSL::Guess - Guess OpenSSL include path

use ExtUtils::MakerMaker;
use Crypt::OpenSSL::Guess;
WriteMakefile(
    # ...
    LIBS => ['-lssl -lcrypto ' . openssl_lib_paths()],
    INC  => openssl_inc_paths(), # guess include path or get from $ENV{OPENSSL_PREFIX}
);

Crypt::OpenSSL::Guess provides helpers to guess OpenSSL include path on any platforms.

Often macOS's homebrew OpenSSL cause a problem on installation due to include path is not added. Some CPAN module provides to modify include path with configure-args, but Carton or Module::CPANfile is not supported to pass configure-args to each modules. Crypt::OpenSSL::* modules should use it on your Makefile.PL.

This module resolves the include path by Net::SSLeay's workaround. Original code is taken from "inc/Module/Install/PRIVATE/Net/SSLeay.pm" by Net::SSLeay.

This functions returns include paths in the format passed to CC. If OpenSSL could not find, then empty string is returned.
openssl_inc_paths(); # on macOS: "-I/usr/local/opt/openssl/include"
This functions returns library paths in the format passed to CC. If OpenSSL could not find, then empty string is returned.
openssl_lib_paths(); # on macOS: "-L/usr/local/opt/openssl/lib"
This function returns OpenSSL's prefix. If set "OPENSSL_PREFIX" environment variable, you can overwrite the return value.
find_openssl_prefix(); # on macOS: "/usr/local/opt/openssl"
This functions returns OpenSSL's executable path.
find_openssl_exec(); # on macOS: "/usr/local/opt/openssl/bin/openssl"
($major, $minor, $letter) = openssl_version()
This functions returns OpenSSL's version as major, minor, letter.
openssl_version(); # ("1.0", "2", "n")

Net::SSLeay

Copyright (C) Takumi Akiyama.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

Takumi Akiyama <t.akiym@gmail.com>

2021-11-01 perl v5.34.0