#serial 13 # See if we need to emulate a missing ftruncate function using fcntl or chsize. # Copyright (C) 2000, 2001, 2003-2007 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 $ac_cv_func_ftruncate = no; then HAVE_FTRUNCATE=0 AC_LIBOBJ([ftruncate]) gl_PREREQ_FTRUNCATE case "$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) ])