openssl_version.h

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#ifndef CVMFS_CRYPTO_OPENSSL_VERSION_H_
#define CVMFS_CRYPTO_OPENSSL_VERSION_H_

#include <openssl/opensslv.h>

// Safeguard when compiling libcvmfs_crypto: make sure we pick up the built-in
// LibreSSL and not the system's OpenSSL
#ifdef CVMFS_LIBRARY
#ifndef LIBRESSL_VERSION_NUMBER
#error "picking up OpenSSL includes instead of LibreSSL"
#endif
#endif

#if OPENSSL_VERSION_NUMBER >= 0x10100000L
  #define OPENSSL_API_INTERFACE_V11
  #if OPENSSL_VERSION_NUMBER >= 0x10101000L
    #define OPENSSL_API_INTERFACE_V111
  #endif
#elif OPENSSL_VERSION_NUMBER < 0x00908000L
  #define OPENSSL_API_INTERFACE_V09
#else
  #define OPENSSL_API_INTERFACE_V10
#endif

#endif  // CVMFS_CRYPTO_OPENSSL_VERSION_H_