Use rosdep (#32)

* Add Cyclone DDS build dependencies for rosdep

* Update README.md

Change apt install commands to rosdep install.

* build_depend -> buildtool_depend for maven and java

* Add vendor package to build cyclonedds from source

Remove maven and java dependency (thanks, @eboasson)

* remove --symlink-build flag

this obscures the intention of the code and sophisticated users can choose whether to use it or not.

* add rosdep to readme

cyclonedds_vendor/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.5)
+project(cyclonedds_vendor)
+find_package(ament_cmake REQUIRED)
+
+include(ExternalProject)
+ExternalProject_Add(cyclonedds
+  GIT_REPOSITORY "https://github.com/eclipse-cyclonedds/cyclonedds.git"
+  CMAKE_ARGS
+   -DBUILD_CONFTOOL:BOOL=OFF
+   -DBUILD_IDLC:BOOL=OFF
+   -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
+  )
+
+ament_package()

cyclonedds_vendor/package.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
+    <name>cyclonedds_vendor</name>
+    <version>0.4.0</version>
+    <description>Wrapper package for Eclipse CycloneDDS.</description>
+    <maintainer email="erik.boasson@adlinktech.com">Erik Boasson</maintainer>
+    <license>Apache License 2.0</license>
+
+    <buildtool_depend>ament_cmake</buildtool_depend>
+
+    <export>
+        <build_type>ament_cmake</build_type>
+    </export>
+</package>