Update documentation to mention setup command

README.md

@@ -4,23 +4,38 @@
 
 hxcpp is the runtime support for the c++ backend of the [haxe](http://haxe.org/) compiler. This contains the headers, libraries and support code required to generate a fully compiled executable from haxe code.
 
+## Installing from haxelib
 
-# building the tools
+```sh
+haxelib install hxcpp
+```
+
+## Installing from git
 
+```sh
+haxelib git hxcpp https://github.com/HaxeFoundation/hxcpp
 ```
-REPO=$(pwd)
-cd ${REPO}/tools/run
-haxe compile.hxml
-cd ${REPO}/tools/hxcpp
-haxe compile.hxml
-cd $REPO
+
+Alternatively, if you plan on modifying hxcpp for development, you can clone manually and use `haxelib dev`:
+
+```sh
+git clone https://github.com/HaxeFoundation/hxcpp
+haxelib dev hxcpp ./hxcpp
 ```
 
-# cppia
+### Build the tools
 
-You first need to build the cppia host.
+When installing from git, it is necessary to build the hxcpp build tool:
 
+```sh
+haxelib run hxcpp setup
 ```
+
+### cppia
+
+You first need to build the cppia host.
+
+```sh
 REPO=$(pwd)
 cd ${REPO}/project
 haxe compile-cppia.hxml

tools/hxcpp/BuildTool.hx

@@ -1847,6 +1847,8 @@ class BuildTool
       Log.println('    ${BOLD}resize${NORMAL} #megabytes -- Only keep #megabytes MB');
       Log.println('    ${BOLD}list${NORMAL} -- list cache usage');
       Log.println('    ${BOLD}details${NORMAL} -- list cache usage, per file');
+      Log.println(' ${BOLD}haxelib run hxcpp${NORMAL} ${ITALIC}${WHITE}setup${NORMAL}');
+      Log.println('   Rebuild the hxcpp build tool');
       Log.println('');
    }
 
@@ -2348,7 +2350,7 @@ class BuildTool
    {
       var ver = Std.parseInt(inVersion);
       if (ver>6)
-         Log.error("Your version of hxcpp.n is out-of-date.  Please update by compiling 'haxe compile.hxml' in hxcpp/tools/hxcpp.");
+         Log.error("Your version of hxcpp.n is out-of-date.  Please update by running 'haxelib run hxcpp setup'");
    }
 
    public function resolvePath(inPath:String)

tools/run/RunMain.hx

@@ -23,8 +23,7 @@ class RunMain
       log('This version of hxcpp ($dir) appears to be a source/developement version.');
       log("Before this can be used, you need to:");
       log(" 1. Rebuild the main command-line tool, this can be done with:");
-      log("     cd tools/hxcpp");
-      log("     haxe compile.hxml");
+      log("     haxelib run hxcpp setup");
       log(" 2. FOR HXCPP API < 330:");
       log("    Build the binaries appropriate to your system(s), this can be done with:");
       log("     cd project");