Fix the default directories bug.

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt

@@ -4,7 +4,6 @@ import com.beust.kobalt.IncrementalTaskInfo
 import com.beust.kobalt.KobaltException
 import com.beust.kobalt.TaskResult
 import com.beust.kobalt.api.*
-import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.ExportedProjectProperty
 import com.beust.kobalt.api.annotation.IncrementalTask
 import com.beust.kobalt.api.annotation.Task
@@ -173,11 +172,15 @@ open class JvmCompilerPlugin @Inject constructor(
             throw KobaltException("Couldn't find any compiler for project ${project.name}")
         } else {
             compilers.forEach { compiler ->
-                val info = createCompilerActionInfo(project, context, isTest, sourceSuffixes = compiler.sourceSuffixes)
+                if (containsSourceFiles(project, compiler)) {
-                val thisResult = compiler.compile(project, context, info)
+                    val info = createCompilerActionInfo(project, context, isTest, sourceSuffixes = compiler.sourceSuffixes)
-                results.add(thisResult)
+                    val thisResult = compiler.compile(project, context, info)
-                if (! thisResult.success && failedResult == null) {
+                    results.add(thisResult)
-                    failedResult = thisResult
+                    if (!thisResult.success && failedResult == null) {
+                        failedResult = thisResult
+                    }
+                } else {
+                    log(2, "Compiler $compiler not running on ${project.name} since no source files were found")
                 }
             }
             return if (failedResult != null) failedResult!!
@@ -185,6 +188,13 @@ open class JvmCompilerPlugin @Inject constructor(
         }
     }
 
+    private fun containsSourceFiles(project: Project, compiler: ICompilerContributor): Boolean {
+        project.projectExtra.suffixesFound.forEach {
+            if (compiler.sourceSuffixes.contains(it)) return true
+        }
+        return false
+    }
+
     val allProjects = arrayListOf<ProjectDescription>()
 
     override fun projects() = allProjects

src/test/resources/projects/kobalt/src/Build.kt

@@ -11,10 +11,6 @@ val javaFirst = project {
 
     assemble {
         jar {
-            fatJar = true
-            manifest {
-                attributes("Main-Class", "example.KotlinMainKt")
-            }
         }
     }
 }
@@ -28,10 +24,6 @@ val kotlinFirst = project {
 
     assemble {
         jar {
-            fatJar = true
-            manifest {
-                attributes("Main-Class", "example.KotlinMainKt")
-            }
         }
     }
 }
@@ -43,8 +35,20 @@ val mixed1 = project {
     version = "0.1"
     directory = name
 
-    dependenciesTest {
+    assemble {
-        compile("org.testng:testng:6.9.5")
+        jar {
+        }
+    }
+}
+
+
+val nonStandard = project {
+    name = "nonStandard"
+    group = "com.example"
+    directory = name
+
+    sourceDirectories {
+        path("src/generated/java")
     }
 
     assemble {

src/test/resources/projects/nonStandard/src/generated/java/example/KotlinClass.kt

@@ -0,0 +1,9 @@
+package example
+
+class KotlinClass {
+	fun run() {
+	    println("KotlinClass run()")
+	}
+}
+
+

src/test/resources/projects/nonStandard/src/main/java/example/JavaMain.java

@@ -0,0 +1,8 @@
+package example;
+
+public class JavaMain {
+	public static void main(String[] argv) {
+		System.out.println("JavaMain calling into Kotlin");
+		new KotlinClass().run();
+	}
+}