This package is the portable version of LibReSSL (http://www.libressl.org). 

LibReSSL is a fork of OpenSSL developed by the OpenBSD project
(http://www.openbsd.org). LibReSSL is developed on OpenBSD. This
package then adds portability shims for other operating systems. 

./configure make make check make install 

See crypto/compat for the bulk of the local compatibility code. 

It will likely build on any reasonably modern version of Linux, Solaris,
or OSX with a sane compiler and C library.