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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_check_dos_filesys.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_DOS_FILESYS_LIMITATIONS
#
# DESCRIPTION
#
# Check if the target is running on DOS. DOS doesn't allow a dot as the
# first character, more than one dot, more than eight characters before a
# dot, and just three letters after the dot. A DOS VM running under
# Windows 9X does not have these restrictions. A DOS program can be
# running in either environment, so its important to code accordingly.
# Defines HAVE_DOS_FILESYS_LIMITATIONS if under DOS.
#
# Use in conjunction with AX_CHECK_PATHNAME_STYLE_DOS.
#
# LICENSE
#
# Copyright (c) 2008 Mark Elbrecht
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 5
AU_ALIAS([ACX_CHECK_DOS_FILESYS], [AX_CHECK_DOS_FILESYS])
AC_DEFUN([AX_CHECK_DOS_FILESYS_LIMITATIONS],
[AC_MSG_CHECKING(for potential DOS filename limitations)
AC_CACHE_VAL(ax_cv_dos_limitations,
[AC_REQUIRE([AC_CANONICAL_HOST])
ax_cv_dos_limitations="yes"
case ${host_os} in
*dos | *djgpp) ax_cv_dos_limitations="yes"
esac
])
AC_MSG_RESULT($ax_cv_dos_limitations)
if test $ax_cv_dos_limitations = "yes"; then
AC_DEFINE(HAVE_DOS_FILESYS_LIMITATIONS)
fi
])
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