title: Gradle build fail with Cannot run program No such file or directory
body: <p>I have a gradle build file with the following task which need to run <code>sphinx-build</code>, I'm running it on Mac OS X with the gradle information bellow.</p>
  
  <pre><code>task makeDocs(type:Exec) {
      workingDir 'sphinx'
      commandLine 'sphinx-build'
      args = ["-b", "html", "-d", "build/doctrees", "-t", "$platformDir", "build/ppsource", "build/html"]
  }
  </code></pre>
  
  <p>When I run this task I get the following exception:</p>
  
  <pre><code>Caused by: net.rubygrapefruit.platform.NativeException: Could not start 'sphinx-build'
      at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:27)
      at net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start(WrapperProcessLauncher.java:36)
      at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:65)
      ... 1 more
  Caused by: java.io.IOException: Cannot run program "sphinx-build" (in directory "/Users/idoran/Documents/Seebo/dev/SDK/seebosdk_docs/sphinx"): error=2, No such file or directory
      at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25)
      ... 3 more
  Caused by: java.io.IOException: error=2, No such file or directory
  </code></pre>
  
  <p>When I run sphinx-build from the same terminal everything works fine.</p>
  
  <hr>
  
  <pre><code>$ gradle --version
  
  ------------------------------------------------------------
  Gradle 2.2.1
  ------------------------------------------------------------
  
  Build time:   2014-11-24 09:45:35 UTC
  Build number: none
  Revision:     6fcb59c06f43a4e6b1bcb401f7686a8601a1fb4a
  
  Groovy:       2.3.6
  Ant:          Apache Ant(TM) version 1.9.3 compiled on December 23 2013
  JVM:          1.8.0_65 (Oracle Corporation 25.65-b01)
  OS:           Mac OS X 10.10.5 x86_64
  </code></pre>