OPENSSL_VERSION_MAJOR, OPENSSL_VERSION_MINOR, OPENSSL_VERSION_PATCH,
  OPENSSL_VERSION_PRE_RELEASE, OPENSSL_VERSION_BUILD_METADATA,
  OPENSSL_VERSION_TEXT, OPENSSL_VERSION_PREREQ, OPENSSL_version_major,
  OPENSSL_version_minor, OPENSSL_version_patch, OPENSSL_version_pre_release,
  OPENSSL_version_build_metadata, OpenSSL_version, OPENSSL_VERSION_NUMBER,
  OpenSSL_version_num, OPENSSL_info - get OpenSSL version number and other
  information
 #include <openssl/opensslv.h>
 #define OPENSSL_VERSION_MAJOR  x
 #define OPENSSL_VERSION_MINOR  y
 #define OPENSSL_VERSION_PATCH  z
 /* The definitions here are typical release values */
 #define OPENSSL_VERSION_PRE_RELEASE ""
 #define OPENSSL_VERSION_BUILD_METADATA ""
 #define OPENSSL_VERSION_TEXT "OpenSSL x.y.z xx XXX xxxx"
 #define OPENSSL_VERSION_PREREQ(maj,min)
 #include <openssl/crypto.h>
 unsigned int OPENSSL_version_major(void);
 unsigned int OPENSSL_version_minor(void);
 unsigned int OPENSSL_version_patch(void);
 const char *OPENSSL_version_pre_release(void);
 const char *OPENSSL_version_build_metadata(void);
 const char *OpenSSL_version(int t);
 const char *OPENSSL_info(int t);
 /* from openssl/opensslv.h */
 #define OPENSSL_VERSION_NUMBER 0xnnnnnnnnL
 /* from openssl/crypto.h */
 unsigned long OpenSSL_version_num();
The three macros OPENSSL_VERSION_MAJOR, OPENSSL_VERSION_MINOR and
  OPENSSL_VERSION_PATCH represent the three parts of a version
  identifier,
  MAJOR.MINOR.PATCH.
The macro OPENSSL_VERSION_PRE_RELEASE is an added bit of
    text that indicates that this is a pre-release version, such as
    "-dev" for an ongoing development snapshot
    or "-alpha3" for an alpha release. The
    value must be a string.
The macro OPENSSL_VERSION_BUILD_METADATA is extra
    information, reserved for other parties, such as
    "+fips", or
    "+vendor.1"). The OpenSSL project will not
    touch this macro (will leave it an empty string). The value must be a
    string.
OPENSSL_VERSION_STR is a convenience macro to get the short
    version identifier string,
    "MAJOR.MINOR.PATCH".
OPENSSL_FULL_VERSION_STR is a convenience macro to get the
    longer version identifier string, which combines OPENSSL_VERSION_STR,
    OPENSSL_VERSION_PRE_RELEASE and
    OPENSSL_VERSION_BUILD_METADATA.
OPENSSL_VERSION_TEXT is a convenience macro to get a full
    descriptive version text, which includes OPENSSL_FULL_VERSION_STR and
    the release date.
OPENSSL_VERSION_PREREQ is a useful macro for checking
    whether the OpenSSL version for the headers in use is at least at the given
    pre-requisite major (maj) and minor (min) number or not. It
    will evaluate to true if the header version number
    (OPENSSL_VERSION_MAJOR.OPENSSL_VERSION_MINOR) is greater than
    or equal to maj.min.
OPENSSL_VERSION_NUMBER is a combination of the major, minor
    and patch version into a single integer 0xMNN00PP0L, where:
  - M
- is the number from OPENSSL_VERSION_MAJOR, in hexadecimal
    notation
- NN
- is the number from OPENSSL_VERSION_MINOR, in hexadecimal
    notation
- PP
- is the number from OPENSSL_VERSION_PATCH, in hexadecimal
    notation
OPENSSL_version_major(), OPENSSL_version_minor(),
  OPENSSL_version_patch(), OPENSSL_version_pre_release(), and
  OPENSSL_version_build_metadata() return the values of the macros above
  for the build of the library, respectively.OpenSSL_version() returns different strings depending on
    t:
  - OPENSSL_VERSION
- The value of OPENSSL_VERSION_TEXT
- OPENSSL_VERSION_STRING
- The value of OPENSSL_VERSION_STR
- OPENSSL_FULL_VERSION_STRING
- The value of OPENSSL_FULL_VERSION_STR
- OPENSSL_CFLAGS
- The compiler flags set for the compilation process in the form
      "compiler: ..." if available, or
      "compiler: information not available"
      otherwise.
- OPENSSL_BUILT_ON
- The date of the build process in the form "built on:
      ..." if available or "built on: date not
      available" otherwise. The date would not be available in a
      reproducible build, for example.
- OPENSSL_PLATFORM
- The "Configure" target of the library build in the form
      "platform: ..." if available, or
      "platform: information not available"
      otherwise.
- OPENSSL_DIR
- The OPENSSLDIR setting of the library build in the form
      "OPENSSLDIR: "..."" if
      available, or "OPENSSLDIR: N/A"
      otherwise.
- OPENSSL_ENGINES_DIR
- The ENGINESDIR setting of the library build in the form
      "ENGINESDIR: "..."" if
      available, or "ENGINESDIR: N/A"
      otherwise. This option is deprecated in OpenSSL 3.0.
- OPENSSL_MODULES_DIR
- The MODULESDIR setting of the library build in the form
      "MODULESDIR: "..."" if
      available, or "MODULESDIR: N/A"
      otherwise.
- OPENSSL_CPU_INFO
- The current OpenSSL cpu settings. This is the current setting of the cpu
      capability flags. It is usually automatically configured but may be set
      via an environment variable. The value has the same syntax as the
      environment variable. For x86 the string looks like
      "CPUINFO: OPENSSL_ia32cap=0x123:0x456"
      or "CPUINFO: N/A" if not available.
For an unknown t, the text "not
    available" is returned.
OPENSSL_info() also returns different strings depending on
    t:
  - OPENSSL_INFO_CONFIG_DIR
- The configured "OPENSSLDIR", which is
      the default location for OpenSSL configuration files.
- OPENSSL_INFO_ENGINES_DIR
- The configured "ENGINESDIR", which is
      the default location for OpenSSL engines.
- OPENSSL_INFO_MODULES_DIR
- The configured "MODULESDIR", which is
      the default location for dynamically loadable OpenSSL modules other than
      engines.
- OPENSSL_INFO_DSO_EXTENSION
- The configured dynamically loadable module extension.
- OPENSSL_INFO_DIR_FILENAME_SEPARATOR
- The separator between a directory specification and a filename. Note that
      on some operating systems, this is not the same as the separator between
      directory elements.
- OPENSSL_INFO_LIST_SEPARATOR
- The OpenSSL list separator. This is typically used in strings that are
      lists of items, such as the value of the environment variable
      $PATH on Unix (where the separator is
      ":") or
      "%PATH%" on Windows (where the separator
      is ";").
- OPENSSL_INFO_CPU_SETTINGS
- The current OpenSSL cpu settings. This is the current setting of the cpu
      capability flags. It is usually automatically configured but may be set
      via an environment variable. The value has the same syntax as the
      environment variable. For x86 the string looks like
      "OPENSSL_ia32cap=0x123:0x456".
For an unknown t, NULL is returned.
OpenSSL_version_num() returns the value of
    OPENSSL_VERSION_NUMBER.
OPENSSL_version_major(), OPENSSL_version_minor() and
  OPENSSL_version_patch() return the version number parts as integers.
OPENSSL_version_pre_release() and
    OPENSSL_version_build_metadata() return the values of
    OPENSSL_VERSION_PRE_RELEASE and OPENSSL_VERSION_BUILD_METADATA
    respectively as constant strings. For any of them that is undefined, the
    empty string is returned.
OpenSSL_version() returns constant strings.
The macros and functions described here were added in OpenSSL 3.0, except for
  OPENSSL_VERSION_NUMBER and OpenSSL_version_num().
Copyright 2018-2022 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License").
    You may not use this file except in compliance with the License. You can
    obtain a copy in the file LICENSE in the source distribution or at
    <https://www.openssl.org/source/license.html>.