VirtualBox

source: kBuild/vendor/sed/current/m4/ftruncate.m4@ 3611

Last change on this file since 3611 was 3611, checked in by bird, 7 months ago

vendor/sed/current: GNU sed 4.9 (sed-4.9.tar.xz sha256:6e226b732e1cd739464ad6862bd1a1aba42d7982922da7a53519631d24975181)

File size: 1.3 KB
Line 
1# serial 21
2
3# See if we need to emulate a missing ftruncate function using _chsize.
4
5# Copyright (C) 2000-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
6# This file is free software; the Free Software Foundation
7# gives unlimited permission to copy and/or distribute it,
8# with or without modifications, as long as this notice is preserved.
9
10AC_DEFUN([gl_FUNC_FTRUNCATE],
11[
12 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
13 AC_CHECK_FUNCS_ONCE([ftruncate])
14 if test $ac_cv_func_ftruncate = yes; then
15 m4_ifdef([gl_LARGEFILE], [
16 AC_REQUIRE([AC_CANONICAL_HOST])
17 case "$host_os" in
18 mingw*)
19 dnl Native Windows, and Large File Support is requested.
20 dnl The MSVCRT _chsize() function only accepts a 32-bit file size,
21 dnl and the mingw64 ftruncate64() function is unreliable (it may
22 dnl delete the file, see
23 dnl <https://web.archive.org/web/20160425005423/http://mingw-w64.sourcearchive.com/documentation/2.0-1/ftruncate64_8c_source.html>).
24 dnl Use gnulib's ftruncate() implementation instead.
25 REPLACE_FTRUNCATE=1
26 ;;
27 esac
28 ], [
29 :
30 ])
31 else
32 HAVE_FTRUNCATE=0
33 fi
34])
35
36# Prerequisites of lib/ftruncate.c.
37AC_DEFUN([gl_PREREQ_FTRUNCATE],
38[
39 AC_CHECK_FUNCS([_chsize])
40])
Note: See TracBrowser for help on using the repository browser.

© 2025 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette