Adding upstream version 1.21.4.upstream/1.21.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/m4/rmdir.m4 b/m4/rmdir.m4
new file mode 100644
index 0000000..b19c890
--- /dev/null
+++ b/m4/rmdir.m4
@@ -0,0 +1,56 @@
+# rmdir.m4 serial 18
+dnl Copyright (C) 2002, 2005, 2009-2023 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.
+
+AC_DEFUN([gl_FUNC_RMDIR],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  dnl Detect cygwin 1.5.x bug.
+  AC_CHECK_HEADERS_ONCE([unistd.h])
+  AC_CACHE_CHECK([whether rmdir works], [gl_cv_func_rmdir_works],
+    [mkdir conftest.dir
+     touch conftest.file
+     AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+         [[#include <stdio.h>
+           #include <errno.h>
+           #if HAVE_UNISTD_H
+           # include <unistd.h>
+           #else /* on Windows with MSVC */
+           # include <direct.h>
+           #endif
+         ]GL_MDA_DEFINES],
+         [[int result = 0;
+           if (!rmdir ("conftest.file/"))
+             result |= 1;
+           else if (errno != ENOTDIR)
+             result |= 2;
+           if (!rmdir ("conftest.dir/./"))
+             result |= 4;
+           return result;
+         ]])],
+       [gl_cv_func_rmdir_works=yes], [gl_cv_func_rmdir_works=no],
+       [case "$host_os" in
+                           # Guess yes on Linux systems.
+          linux-* | linux) gl_cv_func_rmdir_works="guessing yes" ;;
+                           # Guess yes on systems that emulate the Linux system calls.
+          midipix*)        gl_cv_func_rmdir_works="guessing yes" ;;
+                           # Guess yes on glibc systems.
+          *-gnu* | gnu*)   gl_cv_func_rmdir_works="guessing yes" ;;
+                           # Guess no on native Windows.
+          mingw*)          gl_cv_func_rmdir_works="guessing no" ;;
+                           # If we don't know, obey --enable-cross-guesses.
+          *)               gl_cv_func_rmdir_works="$gl_cross_guess_normal" ;;
+        esac
+       ])
+     rm -rf conftest.dir conftest.file])
+  case "$gl_cv_func_rmdir_works" in
+    *yes) ;;
+    *)
+      REPLACE_RMDIR=1
+      ;;
+  esac
+])