kc3-lang/gnulib/m4/unlinkat.m4

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• m4/unlinkat.m4

• # unlinkat.m4 serial 2
  dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  # Written by Jim Meyering.
  
  AC_DEFUN([gl_FUNC_UNLINKAT],
  [
    AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
    AC_CHECK_FUNCS_ONCE([unlinkat])
    AC_REQUIRE([gl_FUNC_UNLINK])
    AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
    if test $ac_cv_func_unlinkat = no; then
      HAVE_UNLINKAT=0
    else
      case "$gl_cv_func_lstat_dereferences_slashed_symlink" in
        *no)
          # Solaris 9 has *at functions, but uniformly mishandles trailing
          # slash in all of them.
          REPLACE_UNLINKAT=1
          ;;
        *)
          # GNU/Hurd has unlinkat, but it has the same bug as unlink.
          # Darwin has unlinkat, but it has the same UNLINK_PARENT_BUG.
          if test $REPLACE_UNLINK = 1; then
            REPLACE_UNLINKAT=1
          fi
          ;;
      esac
    fi
  ])
  

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