Use llbuild.framework bundled with the internal toolchain

^KT-61369

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

@@ -120,7 +120,7 @@ data class ProcessOutput(var stdOut: String, var stdErr: String, var exitCode: I
  * @param args arguments for a process
  */
 fun runProcess(executor: (Action<in ExecSpec>) -> ExecResult?,
-               executable: String, args: List<String>): ProcessOutput {
+               executable: String, args: List<String>, env: Map<String, String> = emptyMap()): ProcessOutput {
     val outStream = ByteArrayOutputStream()
     val errStream = ByteArrayOutputStream()
 
@@ -130,6 +130,7 @@ fun runProcess(executor: (Action<in ExecSpec>) -> ExecResult?,
         this.standardOutput = outStream
         this.errorOutput = errStream
         this.isIgnoreExitValue = true
+        this.environment(env)
     })
 
     checkNotNull(execResult)

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

@@ -300,7 +300,10 @@ fun compileSwift(
             options + "-o" + output.toString() + sources +
             if (fullBitcode) listOf("-embed-bitcode", "-Xlinker", "-bitcode_verify") else listOf("-embed-bitcode-marker")
 
-    val (stdOut, stdErr, exitCode) = runProcess(executor = localExecutor(project), executable = compiler, args = args)
+    val (stdOut, stdErr, exitCode) = runProcess(
+            executor = localExecutor(project), executable = compiler, args = args,
+            env = mapOf("DYLD_FALLBACK_FRAMEWORK_PATH" to configs.absoluteTargetToolchain + "/ExtraFrameworks")
+    )
 
     println(
         """