remove now-unused file

diff --git a/m4/ftw.m4 b/m4/ftw.m4
deleted file mode 100644 (file)
index 9f693a4..0000000
--- a/m4/ftw.m4
+++ /dev/null
@@ -1,74 +0,0 @@
-#serial 2
-# Use the replacement ftw.c if the one in the C library is inadequate or buggy.
-# For now, we always use the code in lib/ because libc doesn't have the FTW_DCH
-# or FTW_DCHP that we need.  Arrange to use lib/ftw.h.  And since that
-# implementation uses tsearch.c/tdestroy, add tsearch.o to the list of
-# objects and arrange to use lib/search.h if necessary.
-# From Jim Meyering
-
-AC_DEFUN([AC_FUNC_FTW],
-[
-  # prerequisites
-  AC_REQUIRE([AC_HEADER_STAT])
-  AC_REQUIRE([jm_FUNC_LSTAT])
-  AC_REQUIRE([AC_HEADER_DIRENT])
-  AC_CHECK_HEADERS(sys/param.h)
-  AC_CHECK_DECLS([stpcpy])
-
-  # In the event that we have to use the replacement ftw.c,
-  # see if we'll also need the replacement tsearch.c.
-  AC_CHECK_FUNC([tdestroy], , [need_tdestroy=1])
-
-  AC_CACHE_CHECK([for ftw/FTW_CHDIR that informs callback of failed chdir],
-                 ac_cv_func_ftw_working,
-  [
-  # The following test would fail prior to glibc-2.3.2, because `depth'
-  # would be 2 rather than 4.  Of course, now that we require FTW_DCH
-  # and FTW_DCHP, this test fails even with GNU libc's fixed ftw.
-  mkdir -p conftest.dir/a/b/c
-  AC_RUN_IFELSE([AC_LANG_SOURCE([[
-#include <string.h>
-#include <stdlib.h>
-#include <ftw.h>
-
-static char *_f[] = { "conftest.dir", "conftest.dir/a",
-                     "conftest.dir/a/b", "conftest.dir/a/b/c" };
-static char **p = _f;
-static int depth;
-
-static int
-cb (const char *file, const struct stat *sb, int file_type, struct FTW *info)
-{
-  if (strcmp (file, *p++) != 0)
-    exit (1);
-  ++depth;
-  return 0;
-}
-
-int
-main ()
-{
-  /* Require these symbols, too.  */
-  int d1 = FTW_DCH;
-  int d2 = FTW_DCHP;
-
-  int err = nftw ("conftest.dir", cb, 30, FTW_PHYS | FTW_MOUNT | FTW_CHDIR);
-  exit ((err == 0 && depth == 4) ? 0 : 1);
-}
-]])],
-               [ac_cv_func_ftw_working=yes],
-               [ac_cv_func_ftw_working=no],
-               [ac_cv_func_ftw_working=no])])
-  rm -rf conftest.dir
-  if test $ac_cv_func_ftw_working = no; then
-    AC_LIBOBJ([ftw])
-    AC_CONFIG_LINKS([$ac_config_libobj_dir/ftw.h:$ac_config_libobj_dir/ftw_.h])
-    # Add tsearch.o IFF we have to use the replacement ftw.c.
-    if test -n "$need_tdestroy"; then
-      AC_LIBOBJ([tsearch])
-      # Link search.h to search_.h if we use the replacement tsearch.c.
-      AC_CONFIG_LINKS(
-        [$ac_config_libobj_dir/search.h:$ac_config_libobj_dir/search_.h])
-    fi
-  fi
-])# AC_FUNC_FTW