From e1908ae95dd4c9d19ee4dfabfc8bf8a7f85943fe Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 18:58:41 +0200
Subject: Adding upstream version 9.4.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 m4/ftruncate.m4 | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 m4/ftruncate.m4

(limited to 'm4/ftruncate.m4')

diff --git a/m4/ftruncate.m4 b/m4/ftruncate.m4
new file mode 100644
index 0000000..e362832
--- /dev/null
+++ b/m4/ftruncate.m4
@@ -0,0 +1,43 @@
+# serial 24
+
+# See if we need to emulate a missing ftruncate function using _chsize.
+
+# Copyright (C) 2000-2001, 2003-2007, 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_FUNC_FTRUNCATE],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  gl_CHECK_FUNCS_ANDROID([ftruncate], [[#include <unistd.h>]])
+  if test $ac_cv_func_ftruncate = yes; then
+    m4_ifdef([gl_LARGEFILE], [
+      AC_REQUIRE([AC_CANONICAL_HOST])
+      case "$host_os" in
+        mingw* | windows*)
+          dnl Native Windows, and Large File Support is requested.
+          dnl The MSVCRT _chsize() function only accepts a 32-bit file size,
+          dnl and the mingw64 ftruncate64() function is unreliable (it may
+          dnl delete the file, see
+          dnl <https://web.archive.org/web/20160425005423/http://mingw-w64.sourcearchive.com/documentation/2.0-1/ftruncate64_8c_source.html>).
+          dnl Use gnulib's ftruncate() implementation instead.
+          REPLACE_FTRUNCATE=1
+          ;;
+      esac
+    ], [
+      :
+    ])
+  else
+    HAVE_FTRUNCATE=0
+    case "$gl_cv_onwards_func_ftruncate" in
+      future*) REPLACE_FTRUNCATE=1 ;;
+    esac
+  fi
+])
+
+# Prerequisites of lib/ftruncate.c.
+AC_DEFUN([gl_PREREQ_FTRUNCATE],
+[
+  AC_CHECK_FUNCS([_chsize])
+])
-- 
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