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OPENSSL_VERSION_NUMBER(3)
NAME
  OPENSSL_VERSION_NUMBER, SSLeay, SSLeay_version - Get OpenSSL version number

SYNOPSIS
  #include <openssl/opensslv.h>
  #define OPENSSL_VERSION_NUMBER 0xnnnnnnnnnL

  #include <openssl/crypto.h>

  long SSLeay(
	  void );

  const char *SSLeay_version(
	  int t );

DESCRIPTION
  OPENSSL_VERSION_NUMBER is a numeric release version identifier:

       MMNNFFPPS: major minor fix patch status

  The status nibble has one of the values 0 for development, 1 to e for betas
  1 to 14, and f for release.

  for example

	0x000906000 == 0.9.6 dev
	0x000906023 == 0.9.6b beta 3
	0x00090605f == 0.9.6e release

  Versions prior to 0.9.3 have identifiers < 0x0930. Versions between 0.9.3
  and 0.9.5 had a version identifier with this interpretation:

	MMNNFFRBB major minor fix final beta/patch

  Examples are:

	0x000904100 == 0.9.4 release
	0x000905000 == 0.9.5 dev

  Version 0.9.5a had an interim interpretation that is like the current one,
  except the patch level got the highest bit set, to keep continuity.  The
  number was therefore 0x0090581f.

  For backward compatibility, SSLEAY_VERSION_NUMBER is also defined.

  The SSLeay() function returns this number. The return value can be compared
  to the macro to make sure that the correct version of the library has been
  loaded, especially when using DLLs on Windows systems.

  The SSLeay_version() function returns different strings depending on t:

    ·  SSLEAY_VERSION

       The text variant of the version number and the release date.  For
       example, OpenSSL 0.9.5a 1 Apr 2000

    ·  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.

  For an unknown t, the text not available is returned.

RETURN VALUE
  The version number.

HISTORY
  The SSLeay() and SSLEAY_VERSION_NUMBER() functions are available in all
  versions of SSLeay and OpenSSL.  The OPENSSL_VERSION_NUMBER() is available
  in all versions of OpenSSL.

SEE ALSO
  Functions: crypto(3)

Index for Section 3

Alphabetical listing for O

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