*ssl-library-names*

Initially nil. If set, the value of this variable must be a list of two entries, each a string or a list of strings (on Windows, each should be just a string). The entries are the names of the two OpenSSL shared libraries that must be loaded in order to enable the :ssl module. Each string is a file name with a full type suffix but no pathname.

When the entry is a list, the names in the list are tried in order until one denotes a library that loads without error.

If nil when the :ssl module is loaded, the value is changed to contains name that have been seen in various OpenSSL installations. A particular site may need yet another variant.

This variable is used only on Linux and Windows systems. In all other operating systems, this variable is ignored.

The environment variable ACL_SSL_LIBRARY_NAMES is set, it does not override the value in this variable if that value is non-nil. If this variable is nil, the environment variable must contain a string of two names separated by a single space, with no leading or trailing spaces. The environmental variable is ignored on all operating systems other than Linux and Windows.

OpenSSL is described in Secure Socket Layer (SSL) in socket.htm.

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This page is new in the 10.0 release.
Created 2019.8.20.