# Check for IPC System V shm support.             -*- Autoconf -*-

# Copyright 2003 Free Software Foundation, Inc.

# 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 3, 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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Boston, MA

# 02110-1301, USA.

AC_DEFUN([GR_SYSV_SHM],

[

	AC_LANG_SAVE

	AC_LANG_C

	AC_CHECK_HEADERS([sys/ipc.h sys/shm.h])

        save_LIBS="$LIBS"

	AC_SEARCH_LIBS(shmat, [cygipc ipc],

	  [ IPC_LIBS="$LIBS" ],

	  [ AC_MSG_WARN([SystemV IPC support not found. ]) ]

	)

        LIBS="$save_LIBS"

	AC_LANG_RESTORE

	AC_SUBST(IPC_LIBS)

])