Fixed possible null pointer dereference in ethercat tool.
#------------------------------------------------------------------------------
#
# $Id$
#
# Copyright (C) 2006-2008 Florian Pose, Ingenieurgemeinschaft IgH
#
# This file is part of the IgH EtherCAT Master.
#
# The IgH EtherCAT Master is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 2, as
# published by the Free Software Foundation.
#
# The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# ---
#
# The license mentioned above concerns the source code only. Using the EtherCAT
# technology and brand is only permitted in compliance with the industrial
# property and similar rights of Beckhoff Automation GmbH.
#
# ---
#
# vi: syntax=make
#
#------------------------------------------------------------------------------
obj-m := ec_rtdm.o
ec_rtdm-objs := \
module.o
ifeq (@ENABLE_XENOMAI@,1)
### Xenomai directory, xeno-config and library directory ###########
XENO_DIR := @XENOMAI_DIR@
XENO_CONFIG := $(XENO_DIR)/bin/xeno-config
XENO_LIB_DIR := $(shell $(XENO_CONFIG) --library-dir)
REV := $(shell if test -s $(src)/../revision; then \
cat $(src)/../revision; \
else \
hg id -i $(src)/.. 2>/dev/null || echo "unknown"; \
fi)
CFLAGS_module.o := -DREV=$(REV) -I$(XENO_DIR)/include -DENABLE_XENOMAI
endif
ifeq (@ENABLE_RTAI@,1)
### RTAI directory, rtai_config and library directory ###########
RTAI_DIR := @RTAI_DIR@
RTAI_CONFIG := $(RTAI_DIR)/bin/rtai-config
RTAI_LIB_DIR := $(shell $(RTAI_CONFIG) --library-dir)
REV := $(shell if test -s $(src)/../revision; then \
cat $(src)/../revision; \
else \
hg id -i $(src)/.. 2>/dev/null || echo "unknown"; \
fi)
CFLAGS_module.o := -DREV=$(REV) -I$(RTAI_DIR)/include -DENABLE_RTAI
endif
KBUILD_EXTRA_SYMBOLS := \
@abs_top_builddir@/$(LINUX_SYMVERS) \
@abs_top_builddir@/master/$(LINUX_SYMVERS)
#------------------------------------------------------------------------------