Added dynamic versioning

	- Added automatic package.xml version generator
	- Added dependency on underlying library's 'version' file
	- Added automatic compatible ROS version string parser
	  (GNU -> ROS)

Author: twdragon

CMakeLists.txt

@@ -1,6 +1,27 @@
 cmake_minimum_required(VERSION 3.8)
 project(witmotion_ros)
 
+# VERSIONING
+if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/witmotion-uart-qt/version")
+    message(FATAL_ERROR "witmotion-uart-qt directory does not contain submodule data. Please update submodules to compile the underlying library in-place for ROS integration")
+endif(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/witmotion-uart-qt/version")
+execute_process(COMMAND git rev-parse --short HEAD
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    OUTPUT_VARIABLE COMMIT_ID
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+file(STRINGS "witmotion-uart-qt/version" PROJECT_VERSION)
+if(CMAKE_BUILD_TYPE STREQUAL "Release")
+    set(PROJECT_VERSION "${PROJECT_VERSION}")
+else(CMAKE_BUILD_TYPE STREQUAL "Release")
+    set(PROJECT_VERSION "${PROJECT_VERSION}~dev_${COMMIT_ID}")
+endif(CMAKE_BUILD_TYPE STREQUAL "Release")
+message(STATUS "Building version ${PROJECT_VERSION}")
+string(REGEX MATCH "[0-9]*\.[0-9]*\.[0-9]*" modified_version ${PROJECT_VERSION})
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/package.xml package_data)
+string(REGEX REPLACE "\<version\>.*\<\/version\>" "\<version\>${modified_version}\<\/version\>" package_data "${package_data}")
+file(WRITE  ${CMAKE_CURRENT_SOURCE_DIR}/package.xml "${package_data}")
+
 add_compile_options(-std=gnu++14)
 
 set(CMAKE_BUILD_TYPE Release)

package.xml

@@ -1,6 +1,6 @@
 <package format="2">
     <name>witmotion_ros</name>
-    <version>0.0.1</version>
+    <version>0.8.22</version>
     <description>Standalone QT-based IMU/GPS decoder nodes for Witmotion UART-compatible sensor devices</description>
 
     <maintainer email="[email protected]">Andrey Vukolov</maintainer>