Darwin*) darwin=true
    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
    if [ -z "$JAVA_HOME" ]; then
      if [ -x "/usr/libexec/java_home" ]; then
        JAVA_HOME="$(/usr/libexec/java_home)"; export JAVA_HOME
      else
        JAVA_HOME="/Library/Java/Home"; export JAVA_HOME
      fi
    fi
    ;;
esac

      if $darwin ; then
        javaHome="`dirname \"$javaExecutable\"`"
        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
      else
        javaExecutable="`readlink -f \"$javaExecutable\"`"
      fi
      javaHome="`dirname \"$javaExecutable\"`"
      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
      JAVA_HOME="$javaHome"
      export JAVA_HOME
    fi
  fi
fi

        when:
        String javaHome = Jvm.current().javaHome
        String expectedJavaHome = "-PexpectedJavaHome=${javaHome}"

        then:
        // Handle JAVA_HOME specified
        executer.withJavaHome(javaHome).withArguments(expectedJavaHome).withTasks('checkJavaHome').run()

        // Handle JAVA_HOME with trailing separator

if [ -n "\$JAVA_HOME" ] ; then
    if [ -x "\$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
        JAVACMD=\$JAVA_HOME/jre/sh/java
    else
        JAVACMD=\$JAVA_HOME/bin/java
    fi
    if [ ! -x "\$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: \$JAVA_HOME

=== JAVA_HOME is set to an invalid directory

If you get an error like:

----
ERROR: JAVA_HOME is set to an invalid directory
----

Set the JAVA_HOME variable in your environment to match the location of your Java installation:

----
$ export JAVA_HOME=/Users/user/Library/Java/JavaVirtualMachines/corretto-11.0.22/Contents/Home
$ echo $JAVA_HOME

Gradle provides a number of environment variables, which are listed below.

=== Setting environment variables

Let's take an example that sets the $JAVA_HOME environment variable:

[source,text]
----
$ set JAVA_HOME=C:\Path\To\Your\Java\Home   // Windows
$ export JAVA_HOME=/path/to/your/java/home  // Mac/Linux
----

You can access environment variables as properties in the build script using the `System.getenv()` method:

        }
        final String value = toJvmArgsString(invocation.launcherJvmArgs);
        environmentVars.put(jvmOptsEnvVar, value);

        // Always set JAVA_HOME, so the daemon process runs on the configured JVM
        environmentVars.put("JAVA_HOME", getJavaHome());
    }

    @Override
    protected List<String> getAllArgs() {
        List<String> args = new ArrayList<>(super.getAllArgs());

----
❯ echo $PATH
/opt/homebrew/opt/openjdk@17/bin
----

You can also set the `JAVA_HOME` environment variable to point to a specific JDK installation directory.
This is especially useful when multiple JDKs are installed:

----
❯ echo %JAVA_HOME%
C:\Program Files\Java\jdk1.7.0_80
----

----
❯ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk-16.jdk/Contents/Home
----

    }

    @Requires(UnitTestPreconditions.UnixDerivative)
    def "can execute generated Unix start script using JAVA_HOME with spaces"() {
        given:
        def testJavaHome = file("javahome/java home with spaces")
        testJavaHome.createLink(Jvm.current().javaHome)

        when:
        succeeds('installDist')

        then:
        file('build/install/sample').exists()

        param("env.BOT_TEAMCITY_GITHUB_TOKEN", "%github.bot-teamcity.token%")
        param("env.GRADLE_CACHE_REMOTE_SERVER", "%gradle.cache.remote.server%")

        param("env.JAVA_HOME", javaHome(buildJvm, os, arch))
        param("env.GRADLE_OPTS", "-Xmx1536m")
        param("env.ANDROID_HOME", os.androidHome)
        param("env.ANDROID_SDK_ROOT", os.androidHome)
        param("env.GRADLE_INTERNAL_REPO_URL", "%gradle.internal.repository.url%")