manually merged with ARM version

e502/cmake/modules/FindMODBUS.cmake

@@ -0,0 +1,55 @@
+# - Try to find libmodbus
+# Once done this will define
+#
+#  MODBUS_FOUND - system has MODBUS
+#  MODBUS_INCLUDE_DIRS - the MODBUS include directory
+#  MODBUS_LIBRARIES - Link these to use MODBUS
+
+# Copyright (c) 2006, Jasem Mutlaq <mutlaqja@ikarustech.com>
+# Based on FindLibfacile by Carsten Niehaus, <cniehaus@gmx.de>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+if (MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)
+
+  # in cache already
+  set(MODBUS_FOUND TRUE)
+  message(STATUS "Found libmodbus: ${MODBUS_LIBRARIES}")
+
+else (MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)
+
+  find_path(MODBUS_INCLUDE_DIRS modbus.h
+    PATH_SUFFIXES modbus
+    ${_obIncDir}
+    ${GNUWIN32_DIR}/include
+  )
+
+  find_library(MODBUS_LIBRARIES NAMES modbus
+    PATHS
+    ${_obLinkDir}
+    ${GNUWIN32_DIR}/lib
+  )
+
+ set(CMAKE_REQUIRED_INCLUDES ${MODBUS_INCLUDE_DIRS})
+ set(CMAKE_REQUIRED_LIBRARIES ${MODBUS_LIBRARIES})
+
+  if(MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)
+    set(MODBUS_FOUND TRUE)
+  else (MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)
+    set(MODBUS_FOUND FALSE)
+  endif(MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)
+
+  if (MODBUS_FOUND)
+    if (NOT MODBUS_FIND_QUIETLY)
+      message(STATUS "Found libmodbus: ${MODBUS_LIBRARIES}")
+    endif (NOT MODBUS_FIND_QUIETLY)
+  else (MODBUS_FOUND)
+    if (MODBUS_FIND_REQUIRED)
+      message(FATAL_ERROR "libmodbus not found. Please install libmodbus from http://libmodbus.org/")
+    endif (MODBUS_FIND_REQUIRED)
+  endif (MODBUS_FOUND)
+
+  mark_as_advanced(MODBUS_INCLUDE_DIRS MODBUS_LIBRARIES)
+  
+endif (MODBUS_INCLUDE_DIRS AND MODBUS_LIBRARIES)