Multi build work.

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

@@ -31,6 +31,10 @@ class BuildScriptConfig {
     @Directive
     fun kobaltOptions(vararg options: String) = Kobalt.addKobaltOptions(options)
 
+    /** Where to find additional build files */
+    @Directive
+    fun buildSourceDirs(vararg dirs: String) = Kobalt.addBuildSourceDirs(dirs)
+
     // The following settings modify the compiler used to compile the build file, which regular users should
     // probably never need to do. Projects should use kotlinCompiler { compilerVersion } to configure the
     // Kotin compiler for their source files.
@@ -127,4 +131,3 @@ fun localMaven() : String {
     }
     return result.toURI().toString()
 }
-

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

@@ -120,9 +120,13 @@ class Kobalt {
         fun findPlugin(name: String) = Plugins.findPlugin(name)
 
         val optionsFromBuild = arrayListOf<String>()
-
         fun addKobaltOptions(options: Array<out String>) {
             optionsFromBuild.addAll(options)
         }
+
+        val buildSourceDirs = arrayListOf<String>()
+        fun addBuildSourceDirs(dirs: Array<out String>) {
+            buildSourceDirs.addAll(dirs)
+        }
     }
 }

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

@@ -1,5 +1,6 @@
 package com.beust.kobalt.internal.build
 
+import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.homeDir
 import java.io.File
 import java.nio.file.*
@@ -22,24 +23,25 @@ class BuildSources(val file: File) : IBuildSources {
     override val root = file
 
     override fun findSourceFiles() : List<File> {
-        return listOf(/* "kobalt/src/a.kt",  */ "kobalt/src/Build.kt")
+        val result = arrayListOf("kobalt/src/Build.kt")
-                .map(::File)
+        if (Kobalt.buildSourceDirs.isNotEmpty()) result.addAll(findBuildFiles(Kobalt.buildSourceDirs))
-//                .map { BuildFile(Paths.get(it), it)}
+
+        return result.map(::File)
     }
 
     override fun exists() = findSourceFiles().isNotEmpty()
 
-    override fun toString() = "{BuildSources " + findSourceFiles()[0] + "...}"
+    override fun toString() = "{BuildSources " + findSourceFiles().joinToString(", ") + "}"
 
-    fun _findSourceFiles() : List<File> {
+    fun findBuildFiles(roots: List<String>) : List<String> {
-        val result = arrayListOf<File>()
+        val result = arrayListOf<String>()
-        Files.walkFileTree(Paths.get(file.absolutePath), object : SimpleFileVisitor<Path>() {
+        roots.forEach { file ->
+            Files.walkFileTree(Paths.get(file), object : SimpleFileVisitor<Path>() {
                 override fun preVisitDirectory(dir: Path?, attrs: BasicFileAttributes?): FileVisitResult {
                     if (dir != null) {
                         val path = dir.toFile()
-                    println(path.name)
                         if (path.name == "src" && path.parentFile.name == "kobalt") {
-                        val sources = path.listFiles().filter { it.name.endsWith(".kt")}
+                            val sources = path.listFiles().filter { it.name.endsWith(".kt") }.map { it.path }
                             result.addAll(sources)
                         }
                     }
@@ -47,6 +49,7 @@ class BuildSources(val file: File) : IBuildSources {
                     return FileVisitResult.CONTINUE
                 }
             })
+        }
         return result
     }
 }

src/main/kotlin/com/beust/kobalt/app/BuildFileCompiler.kt

@@ -86,6 +86,8 @@ class BuildFileCompiler @Inject constructor(@Assisted("buildSources") val buildS
         val projects = arrayListOf<Project>()
         run {
 //        buildFiles.forEach { buildFile ->
+
+            // Parse kobalt/src/Build.kt
             val parsedBuildFile = parseBuildFile(context, buildSources)
             parsedBuildFiles.add(parsedBuildFile)
             val pluginUrls = parsedBuildFile.pluginUrls
@@ -105,13 +107,19 @@ class BuildFileCompiler @Inject constructor(@Assisted("buildSources") val buildS
                 }
             }
 
+            //
+            // Now that Build.kt has been parsed, we might have additional build files (buildSources will
+            // return additional build files) so we parse again.
+            //
+            val newParsedBuildFile = parseBuildFile(context, buildSources)
+
             // Write the modified Build.kt (e.g. maybe profiles were applied) to a temporary file,
             // compile it, jar it in buildScript.jar and run it
             val modifiedBuildFile = KFiles.createTempBuildFileInTempDirectory(deleteOnExit = true)
-            KFiles.saveFile(modifiedBuildFile, parsedBuildFile.nonBuildScriptCode)
+            KFiles.saveFile(modifiedBuildFile, newParsedBuildFile.nonBuildScriptCode)
             val taskResult = maybeCompileBuildFile(context, listOf(modifiedBuildFile.path),
                     buildScriptJarFile, pluginUrls, context.internalContext.forceRecompile,
-                    parsedBuildFile.containsProfiles)
+                    newParsedBuildFile.containsProfiles)
             if (taskResult.success) {
                 projects.addAll(buildScriptUtil.runBuildScriptJarFile(buildScriptJarFile, pluginUrls, context))
             } else {