Re: OpenSSL deprecation warnings on MacOS

[Alan DeKok <aland () deployingradius com>]

Denis Ovsienko wrote:
> Below are some warnings specific to MacOS 10.8.5,
i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build
5658) (LLVM build 2336.11.00), would anybody be willing to troubleshoot
that?
> ./print-esp.c: In function ‘esp_print_decrypt_buffer_by_ikev2’:
> ./print-esp.c:133: warning: ‘EVP_CipherInit’ is deprecated (declared
at /usr/include/openssl/evp.h:598)

  Apple wants applications to use the Apple crypto library instead of
OpenSSL.  I'm not sure that this is a good idea for pcap.

  The way to get rid of these warnings is the following code.  See the
FreeRADIUS src/include/build.h include file for more examples.


/*
 *      Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
 */
#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y)
#define DIAG_DO_PRAGMA(x) _Pragma (#x)

#if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
#  if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
#    define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored
DIAG_JOINSTR(-W,x))
#    define DIAG_ON(x) DIAG_PRAGMA(pop)
#  else
#    define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
#    define DIAG_ON(x)  DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x))
#  endif
#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__
> = 208)
#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x)
#  define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored
DIAG_JOINSTR(-W,x))
#  define DIAG_ON(x) DIAG_PRAGMA(pop)
#else
#  define DIAG_OFF(x)
#  define DIAG_ON(x)
#endif


/*
 *      For dealing with APIs which are only deprecated in OSX (like the
 *       OpenSSL API)
 */
#ifdef __APPLE__
#  define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
#  define USES_APPLE_RST DIAG_ON(deprecated-declarations)
#else
#  define USES_APPLE_DEPRECATED_API
#  define USES_APPLE_RST
#endif
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