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  1. MariaDB Server
  2. MDEV-26136

Build fails when using gcc installed by homebrew

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      Description

      Build fails when using gcc installed by homebrew.

      Environments:

      $  uname -sr 
      Darwin 20.5.0
      $ gcc --version
      gcc (Homebrew GCC 11.1.0_1) 11.1.0
      Copyright (C) 2021 Free Software Foundation, Inc.
      This is free software; see the source for copying conditions.  There is NO
      warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
      $ g++ --version
      g++ (Homebrew GCC 11.1.0_1) 11.1.0
      Copyright (C) 2021 Free Software Foundation, Inc.
      This is free software; see the source for copying conditions.  There is NO
      warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
      $ cmake --version
      cmake version 3.19.7
      CMake suite maintained and supported by Kitware (kitware.com/cmake).
      

      Build:

      $ cd build
      $ cmake -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ ..
      $ cmake --build . --config Debug -j 8
       
      .....
      In file included from server/sql/structs.h:26,
                       from server/sql/handler.h:34,
                       from server/storage/innobase/include/trx0xa.h:27,
                       from server/storage/innobase/include/trx0trx.h:34,
                       from server/storage/innobase/btr/btr0pcur.cc:30:
      server/include/my_time.h: In function 'void my_timeval_trunc(timeval*, uint)':
      server/include/my_time.h:249:65: error: conversion from 'long int' to '__darwin_suseconds_t' {aka 'int'} may change value [-Werror=conversion]
        249 |   tv->tv_usec-= my_time_fraction_remainder(tv->tv_usec, decimals);
      .....
      

      https://opensource.apple.com/source/xnu/xnu-4570.41.2/bsd/sys/_types/_timeval.h.auto.html

      The reason is that the data type of the tv_usec member of the timeval structure used by gcc installed by homebrew is __darwin_suseconds_t, and __darwin_suseconds_t is declared as __int32_t.

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            Assignee:
            danblack Daniel Black
            Reporter:
            kento-takeuchi Kento Takeuchi
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              Created:
              Updated:
              Resolved:

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