[K/N][build] Drop srcRoot from CompileToBitcode

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/bitcode/CompileToBitcode.kt

@@ -62,9 +62,7 @@ abstract class CompileToBitcodeJob : WorkAction<CompileToBitcodeParameters> {
     }
 }
 
-// TODO: Get rid of storing srcRoot in the task.
 abstract class CompileToBitcode @Inject constructor(
-        @Internal val srcRoot: File,
         @Input val folderName: String,
         @Input val target: String,
         @Input val outputGroup: String
@@ -94,9 +92,9 @@ abstract class CompileToBitcode @Inject constructor(
 
     // Source files and headers are registered as inputs by the `inputFiles` and `headers` properties.
     @Internal
-    var srcDirs: FileCollection = project.files(srcRoot.resolve("cpp"))
+    var srcDirs: FileCollection = project.files()
     @Internal
-    var headersDirs: FileCollection = srcDirs + project.files(srcRoot.resolve("headers"))
+    var headersDirs: FileCollection = project.files()
 
     @Input
     var language = Language.CPP

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/bitcode/CompileToBitcodePlugin.kt

@@ -55,8 +55,11 @@ open class CompileToBitcodeExtension @Inject constructor(val project: Project) {
                 project.tasks.register(
                         "${targetName}${name.snakeCaseToCamelCase().capitalize()}${suffixForSanitizer(sanitizer)}",
                         CompileToBitcode::class.java,
-                        srcRoot, name, targetName, outputGroup
+                        name, targetName, outputGroup
                 ).configure {
+                    srcDirs = project.files(srcRoot.resolve("cpp"))
+                    headersDirs = srcDirs + project.files(srcRoot.resolve("headers"))
+
                     this.sanitizer = sanitizer
                     group = BasePlugin.BUILD_GROUP
                     val sanitizerDescription = when (sanitizer) {

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/testing/native/NativeTest.kt

@@ -241,17 +241,18 @@ private fun createTestTask(
         val task = project.tasks.findByName(name) as? CompileToBitcode ?:
             project.tasks.create(name,
                     CompileToBitcode::class.java,
-                    it.srcRoot,
                     "${it.folderName}Tests",
                     target, "test"
                     ).apply {
+                srcDirs = it.srcDirs
+                headersDirs = it.headersDirs + googleTestExtension.headersDirs
+
                 this.sanitizer = sanitizer
                 excludeFiles = emptyList()
                 includeFiles = listOf("**/*Test.cpp", "**/*TestSupport.cpp", "**/*Test.mm", "**/*TestSupport.mm")
                 dependsOn(it)
                 dependsOn("downloadGoogleTest")
                 compilerArgs.addAll(it.compilerArgs)
-                headersDirs += googleTestExtension.headersDirs
                 this.configureCompileToBitcode()
             }
         if (task.inputFiles.count() == 0)

kotlin-native/runtime/build.gradle.kts

@@ -69,6 +69,7 @@ bitcode {
     }
 
     create("mimalloc") {
+        val srcRoot = file("src/mimalloc")
         language = CompileToBitcode.Language.C
         includeFiles = listOf("**/*.c")
         excludeFiles += listOf("**/alloc-override*.c", "**/page-queue.c", "**/static.c", "**/bitmap.inc.c")
@@ -82,6 +83,7 @@ bitcode {
     }
 
     create("libbacktrace") {
+        val srcRoot = file("src/libbacktrace")
         val targetInfo = HostManager().targetByName(target)
         language = CompileToBitcode.Language.C
         val useMachO = targetInfo.family.isAppleFamily