Mercurial > gnulib

view m4/ftruncate.m4 @ 40216:02ed6264c100

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
strfmon_l: Fix -fsanitize=address finding. * lib/strfmon_l.c: Include <errno.h>, <stdbool.h>, <stdlib.h>, <string.h>. (MAX_ARGS): Renamed from MAX_ARG_WORDS. (directive_t, directives_t): New types. (fmon_parse): New function. (rpl_strfmon_l): Don't call va_arg more often than needed for the format string. Consume 'long double' arguments in places where the format string indicates so. * modules/strfmon_l (Depends-on): Add 'stdbool'.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 23:30:40 +0100
parents b06060465f09
children
line wrap: on
line source

# serial 20

# See if we need to emulate a missing ftruncate function using chsize.

# Copyright (C) 2000-2001, 2003-2007, 2009-2019 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])
  AC_CHECK_FUNCS_ONCE([ftruncate])
  if test $ac_cv_func_ftruncate = yes; then
    m4_ifdef([gl_LARGEFILE], [
      AC_REQUIRE([AC_CANONICAL_HOST])
      case "$host_os" in
        mingw*)
          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 <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
  fi
])

# Prerequisites of lib/ftruncate.c.
AC_DEFUN([gl_PREREQ_FTRUNCATE],
[
  AC_CHECK_FUNCS([chsize])
])