kc3-lang/gnulib/m4/d-ino.m4

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• Hash : 73839625
  Author :
  Date : 2023-02-17T22:58:36
  

  Improve cross-compilation for midipix.
  
  Reported by Ørjan Malde <red@foxi.me> at
  <https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00131.html>.
  
  This patch handles the cases where midipix acts like Linux.
  
  * m4/chmod.m4 (gl_FUNC_CHMOD): Treat midipix like Linux with glibc or
  musl libc.
  * m4/d-ino.m4 (gl_CHECK_TYPE_STRUCT_DIRENT_D_INO): Likewise.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): Likewise.
  * m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Likewise.
  * m4/link.m4 (gl_FUNC_LINK): Likewise.
  * m4/linkat.m4 (gl_FUNC_LINKAT): Likewise.
  * m4/lstat.m4 (gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK): Likewise.
  * m4/mkdir.m4 (gl_FUNC_MKDIR): Likewise.
  * m4/pselect.m4 (gl_FUNC_PSELECT): Likewise.
  * m4/ptsname.m4 (gl_FUNC_PTSNAME): Likewise.
  * m4/readlink.m4 (gl_FUNC_READLINK): Likewise.
  * m4/rename.m4 (gl_FUNC_RENAME): Likewise.
  * m4/rmdir.m4 (gl_FUNC_RMDIR): Likewise.
  * m4/select.m4 (gl_FUNC_SELECT): Likewise.
  * m4/sleep.m4 (gl_FUNC_SLEEP): Likewise.
  * m4/stat.m4 (gl_FUNC_STAT): Likewise.
  * m4/symlink.m4 (gl_FUNC_SYMLINK): Likewise.
  * m4/symlinkat.m4 (gl_FUNC_SYMLINKAT): Likewise.
  * m4/unlink.m4 (gl_FUNC_UNLINK): Likewise.
  * m4/usleep.m4 (gl_FUNC_USLEEP): Likewise.
  

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• m4/d-ino.m4

• # serial 21
  
  dnl From Jim Meyering.
  dnl
  dnl Check whether struct dirent has a member named d_ino.
  dnl
  
  # Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2023 Free Software
  # Foundation, Inc.
  
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
    [AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
     AC_CACHE_CHECK([for d_ino member in directory struct],
                    [gl_cv_struct_dirent_d_ino],
       [AC_RUN_IFELSE(
          [AC_LANG_PROGRAM(
             [[#include <sys/types.h>
               #include <sys/stat.h>
               #include <dirent.h>
             ]],
             [[DIR *dp = opendir (".");
               struct dirent *e;
               struct stat st;
               if (! dp)
                 return 1;
               e = readdir (dp);
               if (! e)
                 { closedir (dp); return 2; }
               if (lstat (e->d_name, &st) != 0)
                 { closedir (dp); return 3; }
               if (e->d_ino != st.st_ino)
                 { closedir (dp); return 4; }
               closedir (dp);
               return 0;
             ]])],
             [gl_cv_struct_dirent_d_ino=yes],
             [gl_cv_struct_dirent_d_ino=no],
             [case "$host_os" in
                              # Guess yes on glibc systems with Linux kernel.
                linux*-gnu*)  gl_cv_struct_dirent_d_ino="guessing yes" ;;
                              # Guess yes on musl systems with Linux kernel.
                linux*-musl*) gl_cv_struct_dirent_d_ino="guessing yes" ;;
                              # Guess yes on systems that emulate the Linux system calls.
                midipix*)     gl_cv_struct_dirent_d_ino="guessing yes" ;;
                              # Guess no on native Windows.
                mingw*)       gl_cv_struct_dirent_d_ino="guessing no" ;;
                              # If we don't know, obey --enable-cross-guesses.
                *)            gl_cv_struct_dirent_d_ino="$gl_cross_guess_normal" ;;
              esac
             ])])
     case "$gl_cv_struct_dirent_d_ino" in
       *yes)
         AC_DEFINE([D_INO_IN_DIRENT], [1],
           [Define if struct dirent has a member d_ino that actually works.])
         ;;
     esac
    ]
  )
  

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