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       1                 :            : /*
       2                 :            :  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
       3                 :            :  *
       4                 :            :  * Licensed under the Apache License, Version 2.0 (the "License").
       5                 :            :  * You may not use this file except in compliance with the License.
       6                 :            :  * A copy of the License is located at
       7                 :            :  *
       8                 :            :  *  http://aws.amazon.com/apache2.0
       9                 :            :  *
      10                 :            :  * or in the "license" file accompanying this file. This file is distributed
      11                 :            :  * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
      12                 :            :  * express or implied. See the License for the specific language governing
      13                 :            :  * permissions and limitations under the License.
      14                 :            :  */
      15                 :            : 
      16                 :            : #pragma once
      17                 :            : 
      18                 :            : /* Let modules know that the prelude was included */
      19                 :            : #define _S2N_PRELUDE_INCLUDED
      20                 :            : 
      21                 :            : /* Define the POSIX API we are targeting */
      22                 :            : #ifndef _POSIX_C_SOURCE
      23                 :            :     #define _POSIX_C_SOURCE 200809L
      24                 :            : #endif
      25                 :            : 
      26                 :            : /**
      27                 :            :  * If we're building in release mode make sure _FORTIFY_SOURCE is set
      28                 :            :  * See: https://www.gnu.org/software/libc/manual/html_node/Source-Fortification.html
      29                 :            :  *      https://man7.org/linux/man-pages/man7/feature_test_macros.7.html
      30                 :            :  *
      31                 :            :  * NOTE: _FORTIFY_SOURCE can only be set when optimizations are enabled.
      32                 :            :  *       https://sourceware.org/git/?p=glibc.git;a=commit;f=include/features.h;h=05c2c9618f583ea4acd69b3fe5ae2a2922dd2ddc
      33                 :            :  */
      34                 :            : #if !defined(_FORTIFY_SOURCE) && defined(S2N_BUILD_RELEASE)
      35                 :            :     #define _FORTIFY_SOURCE 2
      36                 :            : #endif
      37                 :            : 
      38                 :            : #if ((__GNUC__ >= 4) || defined(__clang__)) && defined(S2N_EXPORTS)
      39                 :            :     /**
      40                 :            :      * Marks a function as belonging to the public s2n API.
      41                 :            :      *
      42                 :            :      * See: https://gcc.gnu.org/wiki/Visibility
      43                 :            :      */
      44                 :            :     #define S2N_API __attribute__((visibility("default")))
      45                 :            : #endif
      46                 :            : 
      47                 :            : /* These replace the use of MIN/MAX from <sys/param.h>, which is not available on Windows. */
      48                 :   18613901 : #define S2N_MIN(a, b) (((a) < (b)) ? (a) : (b))
      49                 :   68026742 : #define S2N_MAX(a, b) (((a) > (b)) ? (a) : (b))