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| author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
|---|---|---|
| committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
| commit | 70e9163c9c18e995515598085cb824e554eb7ae7 (patch) | |
| tree | a42dc8b2a6c031354bf31472de888bfc8a060132 /m4/ftruncate.m4 | |
| parent | cbf5993c43f49281173f185863577d86bfac6eae (diff) | |
| download | coreutils-tarball-master.tar.gz | |
coreutils-8.25HEADcoreutils-8.25master
Diffstat (limited to 'm4/ftruncate.m4')
| -rw-r--r-- | m4/ftruncate.m4 | 50 |
1 files changed, 22 insertions, 28 deletions
diff --git a/m4/ftruncate.m4 b/m4/ftruncate.m4 index b7f346a..b62414c 100644 --- a/m4/ftruncate.m4 +++ b/m4/ftruncate.m4 @@ -1,46 +1,40 @@ -#serial 13 +# serial 20 -# See if we need to emulate a missing ftruncate function using fcntl or chsize. +# See if we need to emulate a missing ftruncate function using chsize. -# Copyright (C) 2000, 2001, 2003-2007 Free Software Foundation, Inc. +# Copyright (C) 2000-2001, 2003-2007, 2009-2016 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. -# FIXME: remove this macro, along with all uses of HAVE_FTRUNCATE in 2010, -# if the check below provokes no more reports. So far, the only report -# arose from a test build of this gnulib module, cross-compiling to mingw: -# <http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/9203> - AC_DEFUN([gl_FUNC_FTRUNCATE], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - AC_REQUIRE([AC_CANONICAL_HOST]) AC_CHECK_FUNCS_ONCE([ftruncate]) - if test $ac_cv_func_ftruncate = no; then + 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 - AC_LIBOBJ([ftruncate]) - gl_PREREQ_FTRUNCATE - case "$host_os" in - mingw*) - # Yes, we know mingw lacks ftruncate. - ;; - *) - # If someone lacks ftruncate, make configure fail, and request - # a bug report to inform us about it. - if test x"$SKIP_FTRUNCATE_CHECK" != xyes; then - AC_MSG_FAILURE([Your system lacks the ftruncate function. - Please report this, along with the output of "uname -a", to the - bug-coreutils@gnu.org mailing list. To continue past this point, - rerun configure with SKIP_FTRUNCATE_CHECK=yes. - E.g., ./configure SKIP_FTRUNCATE_CHECK=yes]) - fi - esac fi ]) # Prerequisites of lib/ftruncate.c. AC_DEFUN([gl_PREREQ_FTRUNCATE], [ - AC_CHECK_FUNCS(chsize) + AC_CHECK_FUNCS([chsize]) ]) |