Add FreeModBus to NuttX build system

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4962 42af7a65-404d-4744-a932-0658087f49c3

9 files changed, 395 insertions, 14 deletions

diff --git a/apps/modbus/Kconfig b/apps/modbus/Kconfig
index 839466930..da95abf6a 100644
--- a/apps/modbus/Kconfig
+++ b/apps/modbus/Kconfig
@@ -5,6 +5,10 @@
 
 comment "FreeModbus"
 
+config MODBUS
+	bool "Modbus support via FreeModBus"
+	default n
+
 config MB_ASCII_ENABLED
 	bool "Modbus ASCII support"
 	depends on MODBUS
diff --git a/apps/modbus/Make.defs b/apps/modbus/Make.defs
new file mode 100644
index 000000000..a1165c1bd
--- /dev/null
+++ b/apps/modbus/Make.defs
@@ -0,0 +1,40 @@
+############################################################################
+# apps/modbus/Make.defs
+# Adds selected applications to apps/ build
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+if ($(CONFIG_MODBUS),y)
+CONFIGURED_APPS += modbus
+endif
+
diff --git a/apps/modbus/Makefile b/apps/modbus/Makefile
new file mode 100644
index 000000000..485228607
--- /dev/null
+++ b/apps/modbus/Makefile
@@ -0,0 +1,112 @@
+############################################################################
+# apps/modbus/Makefile
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# FreeModBus Library
+
+ASRCS =
+CSRCS =
+
+ifeq ($(CONFIG_MODBUS),y)
+
+CSRCS += mb.c
+DEPPATH = --dep-path .
+VPATH = .
+
+include ascii/Make.defs
+include functions/Make.defs
+include nuttx/Make.defs
+include rtu/Make.defs
+include tcp/Make.defs
+
+endif
+
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+ifeq ($(WINTOOL),y)
+  BIN		= "${shell cygpath -w  $(APPDIR)/libapps$(LIBEXT)}"
+else
+  BIN		= "$(APPDIR)/libapps$(LIBEXT)"
+endif
+
+# Build targets
+
+all:	.built
+.PHONY: context .depend depend clean distclean
+
+ifeq ($(CONFIG_MODBUS),y)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+endif
+
+.built: $(OBJS)
+ifeq ($(CONFIG_MODBUS),y)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $(BIN), $${obj}); \
+	done ; )
+	@touch .built
+endif
+
+context:
+
+.depend: Makefile $(SRCS)
+ifeq ($(CONFIG_MODBUS),y)
+	@$(MKDEP) $(DEPPATH) \
+	  $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+endif
+
+depend: .depend
+
+clean:
+	@rm -f *.o *~ .*.swp .built
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep
+
diff --git a/apps/modbus/README.txt b/apps/modbus/README.txt
index da9b42fd4..1f2c9c3eb 100644
--- a/apps/modbus/README.txt
+++ b/apps/modbus/README.txt
@@ -56,6 +56,7 @@ was integrated into the NuttX configuration system.
 
 The NuttX-named configuration options that are available include:
 
+    CONFIG_MODBUS - General ModBus support
     CONFIG_MB_ASCII_ENABLED - Modbus ASCII support
     CONFIG_MB_RTU_ENABLED - Modbus RTU support
     CONFIG_MB_TCP_ENABLED - Modbus TCP support
@@ -70,25 +71,36 @@ The NuttX-named configuration options that are available include:
       required because some targets are so fast that there is no time between
       receiving and transmitting the frame. If the master is to slow with
       enabling its receiver then he will not receive the response correctly.
-
     CONFIG_MB_FUNC_HANDLERS_MAX - Maximum number of Modbus functions codes the
       protocol stack should support. The maximum number of supported Modbus
       functions must be greater than the sum of all enabled functions in this
       file and custom function handlers. If set to small adding more functions
       will fail.
-
-    CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF - Number of bytes which should be allocated for the Report Slave ID command. This number limits the maximum size of the additional segment in the report slave id function. See eMBSetSlaveID() for more information on how to set this value. It is only used if CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED is set to 1.
-
-    CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED - If the Report Slave ID function should be enabled.
-    CONFIG_MB_FUNC_READ_INPUT_ENABLED - If the Read Input Registers function should be enabled.
-    CONFIG_MB_FUNC_READ_HOLDING_ENABLED - If the Read Holding Registers function should be enabled.
-    CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED - If the Write Single Register function should be enabled.
-    CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED - If the Write Multiple registers function should be enabled.
-    CONFIG_MB_FUNC_READ_COILS_ENABLED - If the Read Coils function should be enabled.
-    CONFIG_MB_FUNC_WRITE_COIL_ENABLED - If the Write Coils function should be enabled.
-    CONFIG_MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED - If the Write Multiple Coils function should be enabled.
-    CONFIG_MB_FUNC_READ_DISCRETE_INPUTS_ENABLED - If the Read Discrete Inputs function should be enabled.
-    CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED - If the Read/Write Multiple Registers function should be enabled.
+    CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF - Number of bytes which should be
+      allocated for the Report Slave ID command. This number limits the
+      maximum size of the additional segment in the report slave id function.
+      See eMBSetSlaveID() for more information on how to set this value. It
+      is only used if CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED is set to 1.
+    CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED - If the Report Slave ID
+      function should be enabled.
+    CONFIG_MB_FUNC_READ_INPUT_ENABLED - If the Read Input Registers function
+      should be enabled.
+    CONFIG_MB_FUNC_READ_HOLDING_ENABLED - If the Read Holding Registers
+      function should be enabled.
+    CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED - If the Write Single Register
+      function should be enabled.
+    CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED - If the Write Multiple
+      registers function should be enabled.
+    CONFIG_MB_FUNC_READ_COILS_ENABLED - If the Read Coils function should
+      be enabled.
+    CONFIG_MB_FUNC_WRITE_COIL_ENABLED - If the Write Coils function should
+      be enabled.
+    CONFIG_MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED - If the Write Multiple Coils
+      function should be enabled.
+    CONFIG_MB_FUNC_READ_DISCRETE_INPUTS_ENABLED - If the Read Discrete Inputs
+      function should be enabled.
+    CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED - If the Read/Write Multiple
+      Registers function should be enabled.
 
 Note
 ====
diff --git a/apps/modbus/ascii/Make.defs b/apps/modbus/ascii/Make.defs
new file mode 100644
index 000000000..263134f1c
--- /dev/null
+++ b/apps/modbus/ascii/Make.defs
@@ -0,0 +1,44 @@
+############################################################################
+# apps/modbus/functions/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+ifeq ($(MB_ASCII_ENABLED),y)
+
+CSRCS += mbascii.c
+
+DEPPATH += --dep-path ascii
+VPATH += :ascii
+CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/ascii}
+
+endif
diff --git a/apps/modbus/functions/Make.defs b/apps/modbus/functions/Make.defs
new file mode 100644
index 000000000..48f60d506
--- /dev/null
+++ b/apps/modbus/functions/Make.defs
@@ -0,0 +1,41 @@
+############################################################################
+# apps/modbus/nuttx/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+CSRCS += mbfunccoils.c mbfuncdiag.c mbfuncdisc.c mbfuncholding.c
+CSRCS += mbfuncinput.c mbfuncother.c mbutils.c
+
+DEPPATH += --dep-path functions
+VPATH += :functions
+CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/functions}
diff --git a/apps/modbus/nuttx/Make.defs b/apps/modbus/nuttx/Make.defs
new file mode 100644
index 000000000..96484217b
--- /dev/null
+++ b/apps/modbus/nuttx/Make.defs
@@ -0,0 +1,40 @@
+############################################################################
+# apps/modbus/nuttx/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+CSRCS += portevent.c portother.c portserial.c porttimer.c
+
+DEPPATH += --dep-path nuttx
+VPATH += :nuttx
+CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/nuttx}
diff --git a/apps/modbus/rtu/Make.defs b/apps/modbus/rtu/Make.defs
new file mode 100644
index 000000000..bb1b46c30
--- /dev/null
+++ b/apps/modbus/rtu/Make.defs
@@ -0,0 +1,44 @@
+############################################################################
+# apps/modbus/rtu/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+ifeq ($(MB_RTU_ENABLED),y)
+
+CSRCS += mbcrc.c mbrtu.c
+
+DEPPATH += --dep-path rtu
+VPATH += :rtu
+CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/rtu}
+
+endif
diff --git a/apps/modbus/tcp/Make.defs b/apps/modbus/tcp/Make.defs
new file mode 100644
index 000000000..93d4a2be0
--- /dev/null
+++ b/apps/modbus/tcp/Make.defs
@@ -0,0 +1,44 @@
+############################################################################
+# apps/modbus/tcp/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+ifeq ($(MB_TCP_ENABLED),y)
+
+CSRCS += mbtcp.c
+
+DEPPATH += --dep-path tcp
+VPATH += :tcp
+CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(APPDIR)/modbus/tcp}
+
+endif