gnulib/import/m4/closedir.m4

   1 # closedir.m4 serial 6
   2 dnl Copyright (C) 2011-2019 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_FUNC_CLOSEDIR],
   8 [
   9   AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
  10   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  11
  12   AC_CHECK_FUNCS([closedir])
  13   if test $ac_cv_func_closedir = no; then
  14     HAVE_CLOSEDIR=0
  15   fi
  16   dnl Replace closedir() for supporting the gnulib-defined fchdir() function,
  17   dnl to keep fchdir's bookkeeping up-to-date.
  18   m4_ifdef([gl_FUNC_FCHDIR], [
  19     gl_TEST_FCHDIR
  20     if test $HAVE_FCHDIR = 0; then
  21       if test $HAVE_CLOSEDIR = 1; then
  22         REPLACE_CLOSEDIR=1
  23       fi
  24     fi
  25   ])
  26   dnl Replace closedir() for supporting the gnulib-defined dirfd() function.
  27   case $host_os,$HAVE_CLOSEDIR in
  28     os2*,1)
  29       REPLACE_CLOSEDIR=1;;
  30   esac
  31 ])