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OPENSSL_VERSION_NUMBER(3)                          OpenSSL                         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

       for example

        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.

       SSLeay() 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.

       SSLeay_version() 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.

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

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

RETURN VALUE
       The version number.

SEE ALSO
       crypto(3)

HISTORY
       SSLeay() and SSLEAY_VERSION_NUMBER are available in all versions of SSLeay and OpenSSL.
       OPENSSL_VERSION_NUMBER is available in all versions of OpenSSL.  SSLEAY_DIR was added in OpenSSL
       0.9.7.



50                                               2013-03-05                        OPENSSL_VERSION_NUMBER(3)