NAME

       OPENSSL_FILE, OPENSSL_LINE, OPENSSL_FUNC, OPENSSL_MSTR, OPENSSL_MSTR_HELPER - generic C
       programming utility macros

SYNOPSIS

        #include <openssl/macros.h>

        #define OPENSSL_FILE /* typically: __FILE__ */
        #define OPENSSL_LINE /* typically: __LINE__ */
        #define OPENSSL_FUNC /* typically: __func__ */

        #define OPENSSL_MSTR_HELPER(x) #x
        #define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)

DESCRIPTION

       The macros OPENSSL_FILE and OPENSSL_LINE typically yield the current filename and line
       number during C compilation.  When OPENSSL_NO_FILENAMES is defined they yield "" and 0,
       respectively.

       The macro OPENSSL_FUNC attempts to yield the name of the C function currently being
       compiled, as far as language and compiler versions allow.  Otherwise, it yields "(unknown
       function)".

       The macro OPENSSL_MSTR yields the expansion of the macro given as argument, which is
       useful for concatenation with string constants.  The macro OPENSSL_MSTR_HELPER is an
       auxiliary macro for this purpose.

RETURN VALUES

       see above

SEE ALSO

       crypto(7)

HISTORY

       OPENSSL_FUNC, OPENSSL_MSTR, and OPENSSL_MSTR_HELPER were added in OpenSSL 3.0.

COPYRIGHT

       Copyright 2018-2019 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>.