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.\" ========================================================================
.\"
.IX Title "Crypt::OpenSSL::Guess 3pm"
.TH Crypt::OpenSSL::Guess 3pm "2022-07-18" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Crypt::OpenSSL::Guess \- Guess OpenSSL include path
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    use ExtUtils::MakeMaker;
\&    use Crypt::OpenSSL::Guess;
\&
\&    WriteMakefile(
\&        # ...
\&        LIBS => [openssl_lib_paths() . \*(Aq \-lssl \-lcrypto\*(Aq],
\&        INC  => openssl_inc_paths(), # guess include path or get from $ENV{OPENSSL_PREFIX}
\&    );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Crypt::OpenSSL::Guess provides helpers to guess OpenSSL include path on any platforms.
.PP
Often macOS's homebrew OpenSSL cause a problem on installation due to include path is not added.
Some \s-1CPAN\s0 module provides to modify include path with configure-args, but Carton or Module::CPANfile
is not supported to pass configure-args to each modules. Crypt::OpenSSL::* modules should use it on your Makefile.PL.
.PP
This module resolves the include path by Net::SSLeay's workaround.
Original code is taken from \f(CW\*(C`inc/Module/Install/PRIVATE/Net/SSLeay.pm\*(C'\fR by Net::SSLeay.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.IP "\fBopenssl_inc_paths()\fR" 4
.IX Item "openssl_inc_paths()"
This functions returns include paths in the format passed to \s-1CC.\s0 If OpenSSL could not find, then empty string is returned.
.Sp
.Vb 1
\&    openssl_inc_paths(); # on macOS: "\-I/usr/local/opt/openssl/include"
.Ve
.IP "\fBopenssl_lib_paths()\fR" 4
.IX Item "openssl_lib_paths()"
This functions returns library paths in the format passed to \s-1CC.\s0 If OpenSSL could not find, then empty string is returned.
.Sp
.Vb 1
\&    openssl_lib_paths(); # on macOS: "\-L/usr/local/opt/openssl/lib"
.Ve
.IP "find_openssl_prefix([$dir])" 4
.IX Item "find_openssl_prefix([$dir])"
This function returns OpenSSL's prefix. If set \f(CW\*(C`OPENSSL_PREFIX\*(C'\fR environment variable, you can overwrite the return value.
.Sp
.Vb 1
\&    find_openssl_prefix(); # on macOS: "/usr/local/opt/openssl"
.Ve
.IP "find_openssl_exec($prefix)" 4
.IX Item "find_openssl_exec($prefix)"
This functions returns OpenSSL's executable path.
.Sp
.Vb 1
\&    find_openssl_exec(); # on macOS: "/usr/local/opt/openssl/bin/openssl"
.Ve
.ie n .IP "($major, $minor, $letter) = \fBopenssl_version()\fR" 4
.el .IP "($major, \f(CW$minor\fR, \f(CW$letter\fR) = \fBopenssl_version()\fR" 4
.IX Item "($major, $minor, $letter) = openssl_version()"
This functions returns OpenSSL's version as major, minor, letter.
.Sp
.Vb 1
\&    openssl_version(); # ("1.0", "2", "n")
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Net::SSLeay
.SH "LICENSE"
.IX Header "LICENSE"
Copyright (C) Takumi Akiyama.
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
.SH "AUTHOR"
.IX Header "AUTHOR"
Takumi Akiyama <t.akiym@gmail.com>