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[](https://travis-ci.org/akiym/Crypt-OpenSSL-Guess)
# NAME
Crypt::OpenSSL::Guess - Guess OpenSSL include path
# SYNOPSIS
use ExtUtils::MakeMaker;
use Crypt::OpenSSL::Guess;
WriteMakefile(
# ...
LIBS => [openssl_lib_paths() . ' -lssl -lcrypto'],
INC => openssl_inc_paths(), # guess include path or get from $ENV{OPENSSL_PREFIX}
);
# DESCRIPTION
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](https://metacpan.org/pod/Carton) or [Module::CPANfile](https://metacpan.org/pod/Module%3A%3ACPANfile)
is not supported to pass configure-args to each modules. Crypt::OpenSSL::\* modules should use it on your [Makefile.PL](https://metacpan.org/pod/Makefile.PL).
This module resolves the include path by [Net::SSLeay](https://metacpan.org/pod/Net%3A%3ASSLeay)'s workaround.
Original code is taken from `inc/Module/Install/PRIVATE/Net/SSLeay.pm` by [Net::SSLeay](https://metacpan.org/pod/Net%3A%3ASSLeay).
# FUNCTIONS
- openssl\_inc\_paths()
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"
- openssl\_lib\_paths()
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"
- find\_openssl\_prefix(\[$dir\])
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"
- find\_openssl\_exec($prefix)
This functions returns OpenSSL's executable path.
find_openssl_exec(); # on macOS: "/usr/local/opt/openssl/bin/openssl"
- ($major, $minor, $letter) = openssl\_version()
This functions returns OpenSSL's version as major, minor, letter.
openssl_version(); # ("1.0", "2", "n")
# SEE ALSO
[Net::SSLeay](https://metacpan.org/pod/Net%3A%3ASSLeay)
# LICENSE
Copyright (C) Takumi Akiyama.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
# AUTHOR
Takumi Akiyama <t.akiym@gmail.com>
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