- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- SEE ALSO
- HISTORY

# NAME

SSLeay_version - retrieve version/build information about OpenSSL library

# SYNOPSIS

     #include <openssl/crypto.h>

     const char *SSLeay_version(int type);

# DESCRIPTION

`SSLeay_version()` returns a pointer to a constant string describing the version of the OpenSSL library or giving information about the library build.

The following type values are supported:

SSLEAY_VERSION

  The version of the OpenSSL library including the release date.

SSLEAY_CFLAGS

  The compiler flags set for the compilation process in the form ``compiler: ...'' if available or ``compiler: information not available'' otherwise.

SSLEAY_BUILT_ON

  The date of the build process in the form ``built on: ...'' if available or ``built on: date not available'' otherwise.

SSLEAY_PLATFORM

  The ``Configure'' target of the library build in the form ``platform: ...'' if available or ``platform: information not available'' otherwise.

SSLEAY_DIR

  The ``OPENSSLDIR'' setting of the library build in the form ``OPENSSLDIR: ''...``'' if available or ``OPENSSLDIR: N/A'' otherwise.

# RETURN VALUES

The following return values can occur:

``not available''

  An invalid value for type was given.

Pointer to constant string

  Textual description.

# SEE ALSO

crypto

# HISTORY

SSLEAY_DIR was added in OpenSSL 0.9.7.