The Tcpdump Group git mirrors - tcpslice/blob - diag-control.h

   1 /*
   2  * Copyright (c) 2021 The Tcpdump Group
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  15  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  16  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  17  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  18  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  22  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  * POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef tcpslice_diag_control_h
  29 #define tcpslice_diag_control_h
  30
  31 #include "compiler-tests.h"
  32 #define DIAG_DO_PRAGMA(x) _Pragma (#x)
  33
  34 /*
  35  * XL C has to be tested first because starting with version 16.1 it defines
  36  * both __GNUC__ and __clang__.
  37  */
  38 #if TCPSLICE_IS_AT_LEAST_XL_C_VERSION(1,0)
  39   /*
  40    * GCC diagnostic pragmas became available in XL C version 16.1.0, for Linux
  41    * only. XL C for Linux always defines __linux__.
  42    */
  43   #if TCPSLICE_IS_AT_LEAST_XL_C_VERSION(16,1) && defined(__linux__)
  44     #define DIAG_OFF_PEDANTIC \
  45       DIAG_DO_PRAGMA(GCC diagnostic push) \
  46       DIAG_DO_PRAGMA(GCC diagnostic ignored "-Wpedantic")
  47     #define DIAG_ON_PEDANTIC \
  48       DIAG_DO_PRAGMA(GCC diagnostic pop)
  49   #endif
  50 /*
  51  * Clang defines __GNUC__ and __GNUC_MINOR__, so has to be tested before GCC.
  52  */
  53 #elif TCPSLICE_IS_AT_LEAST_CLANG_VERSION(2,8)
  54   #define DIAG_OFF_PEDANTIC \
  55     DIAG_DO_PRAGMA(clang diagnostic push) \
  56     DIAG_DO_PRAGMA(clang diagnostic ignored "-Wpedantic")
  57   #define DIAG_ON_PEDANTIC \
  58     DIAG_DO_PRAGMA(clang diagnostic pop)
  59 /*
  60  * GCC 4.6 has working ignored/push/pop.
  61  */
  62 #elif TCPSLICE_IS_AT_LEAST_GNUC_VERSION(4,6)
  63   /*
  64    * -Wpedantic became available in GCC 4.8.0.
  65    */
  66   #if TCPSLICE_IS_AT_LEAST_GNUC_VERSION(4,8)
  67     #define DIAG_OFF_PEDANTIC \
  68       DIAG_DO_PRAGMA(GCC diagnostic push) \
  69       DIAG_DO_PRAGMA(GCC diagnostic ignored "-Wpedantic")
  70     #define DIAG_ON_PEDANTIC \
  71       DIAG_DO_PRAGMA(GCC diagnostic pop)
  72   #endif
  73 #endif
  74
  75 #ifndef DIAG_OFF_PEDANTIC
  76 #define DIAG_OFF_PEDANTIC
  77 #endif
  78 #ifndef DIAG_ON_PEDANTIC
  79 #define DIAG_ON_PEDANTIC
  80 #endif
  81
  82 #endif /* tcpslice_diag_control_h */