From 7eb80d4cba32ab73eefda5497f6b2db7dd64aad1 Mon Sep 17 00:00:00 2001
From: Svetoslav Neykov <svetoslav.neykov@cloudsoftcorp.com>
Date: Tue, 8 Mar 2016 16:04:02 +0200
Subject: [PATCH] Optional build - check if go executable is on the path, skip
 otherwise

---
 build.xml | 34 +++++++++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/build.xml b/build.xml
index fa66790..eebcc28 100644
--- a/build.xml
+++ b/build.xml
@@ -16,11 +16,19 @@
     specific language governing permissions and limitations
     under the License.
 -->
-<project name="CLI" >
+<project name="CLI"
+    xmlns:if="ant:if"
+    xmlns:unless="ant:unless">
+
     <property name="build.script" location="${basedir}/release/build.sh"/>
 
-      <target name="all" >
-        <exec executable="${build.script}" failonerror="true">
+    <property environment="env" />
+    <available file="go"
+             filepath="${env.PATH}"
+             property="go.present"/>
+
+    <target name="all">
+        <exec executable="${build.script}" failonerror="true" if:set="go.present">
             <arg value="-A"/>
             <arg value="-t"/>
             <arg value="-d"/>
@@ -28,10 +36,14 @@
             <arg value="-s"/>
             <arg value="${basedir}"/>
         </exec>
+        <echo unless:set="go.present">
+            GO compiler not found on classpath, skipping brooklyn-client-cli build
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+        </echo>
     </target>
 
-    <target name="cross" >
-        <exec executable="${build.script}" failonerror="true">
+    <target name="cross">
+        <exec executable="${build.script}" failonerror="true" if:set="go.present">
             <arg value="-t"/>
             <arg value="-a"/>
             <arg value="${arch}"/>
@@ -42,15 +54,23 @@
             <arg value="-s"/>
             <arg value="${basedir}"/>
         </exec>
+        <echo unless:set="go.present">
+            GO compiler not found on classpath, skipping brooklyn-client-cli build
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+        </echo>
     </target>
 
-    <target name="native" >
-        <exec executable="${build.script}" failonerror="true">
+    <target name="native">
+        <exec executable="${build.script}" failonerror="true" if:set="go.present">
             <arg value="-d"/>
             <arg value="${project.build.directory}"/>
             <arg value="-s"/>
             <arg value="${basedir}"/>
         </exec>
+        <echo unless:set="go.present">
+            GO compiler not found on classpath, skipping brooklyn-client-cli build
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+        </echo>
     </target>
 
 </project>