Updated build.sh to build curl, openssl, and 256k1 if needed

openssl-3.4.2/doc/man1/openssl-crl2pkcs7.pod

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+=pod
+
+=begin comment
+
+WARNING: do not edit!
+Generated by Makefile from doc/man1/openssl-crl2pkcs7.pod.in
+
+=end comment
+
+=head1 NAME
+
+openssl-crl2pkcs7 - Create a PKCS#7 structure from a CRL and certificates
+
+=head1 SYNOPSIS
+
+B<openssl> B<crl2pkcs7>
+[B<-help>]
+[B<-inform> B<DER>|B<PEM>]
+[B<-outform> B<DER>|B<PEM>]
+[B<-in> I<filename>]
+[B<-out> I<filename>]
+[B<-certfile> I<filename>]
+[B<-nocrl>]
+[B<-provider> I<name>]
+[B<-provider-path> I<path>]
+[B<-propquery> I<propq>]
+
+=head1 DESCRIPTION
+
+This command takes an optional CRL and one or more
+certificates and converts them into a PKCS#7 degenerate "certificates
+only" structure.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-help>
+
+Print out a usage message.
+
+=item B<-inform> B<DER>|B<PEM>
+
+The input format of the CRL; the default is B<PEM>.
+See L<openssl-format-options(1)> for details.
+
+=item B<-outform> B<DER>|B<PEM>
+
+The output format of the PKCS#7 object; the default is B<PEM>.
+See L<openssl-format-options(1)> for details.
+
+=item B<-in> I<filename>
+
+This specifies the input filename to read a CRL from or standard input if this
+option is not specified.
+
+=item B<-out> I<filename>
+
+Specifies the output filename to write the PKCS#7 structure to or standard
+output by default.
+
+=item B<-certfile> I<filename>
+
+Specifies a filename containing one or more certificates in B<PEM> format.
+All certificates in the file will be added to the PKCS#7 structure. This
+option can be used more than once to read certificates from multiple
+files.
+
+=item B<-nocrl>
+
+Normally a CRL is included in the output file. With this option no CRL is
+included in the output file and a CRL is not read from the input file.
+
+=item B<-provider> I<name>
+
+=item B<-provider-path> I<path>
+
+=item B<-propquery> I<propq>
+
+See L<openssl(1)/Provider Options>, L<provider(7)>, and L<property(7)>.
+
+=back
+
+=head1 EXAMPLES
+
+Create a PKCS#7 structure from a certificate and CRL:
+
+ openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem
+
+Creates a PKCS#7 structure in DER format with no CRL from several
+different certificates:
+
+ openssl crl2pkcs7 -nocrl -certfile newcert.pem
+        -certfile demoCA/cacert.pem -outform DER -out p7.der
+
+=head1 NOTES
+
+The output file is a PKCS#7 signed data structure containing no signers and
+just certificates and an optional CRL.
+
+This command can be used to send certificates and CAs to Netscape as part of
+the certificate enrollment process. This involves sending the DER encoded output
+as MIME type application/x-x509-user-cert.
+
+The B<PEM> encoded form with the header and footer lines removed can be used to
+install user certificates and CAs in MSIE using the Xenroll control.
+
+=head1 SEE ALSO
+
+L<openssl(1)>,
+L<openssl-pkcs7(1)>
+
+=head1 COPYRIGHT
+
+Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut