wolfSSL Build Option in CURL

With the next release of CURL and libcurl, 7.21.5, there will be support for the wolfSSL Embedded SSL Library. This allows CURL to leverage the benefits of the wolfSSL library – including its small footprint, optimizations for embedded environments, and support for TLS 1.2.

First released in 1997, CURL (“Client for URLs”) is a command line tool (along with libcurl, a library) for transferring data using various protocols with URL syntax. Some of the supported protocols include DICT, FILE, FTP(S), GOPHER, HTTP(S), IMAP(S), LDAP(S), POP3(S), RTMP, RTSP, SCP, SFTP, SMTP(S), TELNET, AND TFTP. Being extremely portable, free, feature rich, supported, and fast, it is a go-to tool and library for a large number of users.

Basic CURL syntax simply involves typing “curl” at the command line followed by the URL of the output to retrieve. For example, to retrieve yaSSL’s home page, the following command could be issued:

shell> curl www.yassl.com/yaSSL/Home.html

After downloading the CURL source (see link below), wolfSSL support can be enabled by building CURL using the “–with-cyassl” build option. While enabling wolfSSL, OpenSSL must be disabled by using the “–without-ssl” build option in addition:

shell> ./configure –without-ssl –with-cyassl

This assumes that wolfSSL has been installed in the default directory (/usr/local/cyassl). If wolfSSL has been installed in a different directory, it can be specified by appending it to the wolfSSL build option: “–with-cyassl=PATH”. For more information about wolfSSL and CURL, please email info@yassl.com.

CURL GitHub Page: https://github.com/bagder/curl