Compile the C Adaptor with clang and link it to the final binary.

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterCompile.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.backend.konan
+
+import org.jetbrains.kotlin.konan.exec.*
+import org.jetbrains.kotlin.konan.target.*
+import org.jetbrains.kotlin.konan.file.*
+
+fun produceCAdapterBitcode(clang: TargetClang, headerFileName: String, cppFileName: String, bitcodeFileName: String) {
+
+    val headerDirName = File(headerFileName).absoluteFile.parent
+
+    val clangCommand = clang.clangCXX("-std=c++11", cppFileName, "-I", headerDirName, "-emit-llvm", "-c", "-o", bitcodeFileName)
+
+    runTool(clangCommand)
+}

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterGenerator.kt

@@ -32,7 +32,7 @@ import org.jetbrains.kotlin.ir.visitors.acceptChildrenVoid
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
 import org.jetbrains.kotlin.resolve.descriptorUtil.isEffectivelyPublicApi
 import org.jetbrains.kotlin.types.TypeUtils
-import org.jetbrains.kotlin.konan.file.File
+import org.jetbrains.kotlin.konan.file.*
 
 private enum class ScopeKind {
     TOP,
@@ -426,7 +426,10 @@ internal class CAdapterGenerator(val context: Context,
     }
 
     private fun makeGlobalStruct(top: ExportedElementScope) {
-        outputStreamWriter = PrintWriter(File(".", "${prefix}_api.h").outputStream())
+        outputStreamWriter = context.config.tempFiles
+            .cAdapterHeader
+            .printWriter()
+
         output("#ifndef KONAN_${prefix.toUpperCase()}_H")
         output("#define KONAN_${prefix.toUpperCase()}_H")
         // TODO: use namespace for C++ case?
@@ -472,7 +475,10 @@ internal class CAdapterGenerator(val context: Context,
         outputStreamWriter.close()
         println("Produced dynamic library API in ${prefix}_api.h")
 
-        outputStreamWriter = PrintWriter(File(".", "${prefix}_api.cpp").outputStream())
+        outputStreamWriter = context.config.tempFiles
+            .cAdapterCpp
+            .printWriter()
+
         output("#include \"${prefix}_api.h\"")
         output("""
         |struct KObjHeader;

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CompilerOutput.kt

@@ -31,18 +31,31 @@ internal fun produceOutput(context: Context) {
 
     val llvmModule = context.llvmModule!!
     val config = context.config.configuration
+    val tempFiles = context.config.tempFiles
+    val produce = config.get(KonanConfigKeys.PRODUCE)
 
-    when (config.get(KonanConfigKeys.PRODUCE)) {
+    when (produce) {
         CompilerOutputKind.DYNAMIC,
         CompilerOutputKind.FRAMEWORK,
         CompilerOutputKind.PROGRAM -> {
             val program = context.config.outputName
-            val output = "$program.kt.bc"
+            val output = tempFiles.nativeBinaryFileName
             context.bitcodeFileName = output
 
+            val generatedBitcodeFiles = 
+                if (produce == CompilerOutputKind.DYNAMIC) {
+                    produceCAdapterBitcode(
+                        context.config.clang, 
+                        tempFiles.cAdapterHeaderName,
+                        tempFiles.cAdapterCppName, 
+                        tempFiles.cAdapterBitcodeName)
+                    listOf(tempFiles.cAdapterBitcodeName)
+                } else emptyList()
+
             val nativeLibraries = 
                 context.config.nativeLibraries +
-                context.config.defaultNativeLibraries 
+                context.config.defaultNativeLibraries + 
+                generatedBitcodeFiles
 
             PhaseManager(context).phase(KonanPhase.BITCODE_LINKER) {
                 for (library in nativeLibraries) {

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/Exceptions.kt

@@ -21,6 +21,11 @@ package org.jetbrains.kotlin.backend.konan
  */
 open class KonanException(message: String = "", cause: Throwable? = null) : Exception(message, cause)
 
+/**
+ * An error occured during external tool invocation. Such as non-zero exit code. 
+ */
+class KonanExternalToolFailure(message: String = "", cause: Throwable? = null) : KonanException(message, cause)
+
 /**
  * Represents a compilation error caused by mistakes in an input file, e.g. undefined reference.
  */
@@ -31,8 +36,3 @@ class KonanCompilationException(message: String = "", cause: Throwable? = null)
  */
 class KonanIrDeserializationException(message: String = "", cause: Throwable? = null) : KonanException(message, cause)
 
-/**
- * An error occured during external tool invocation. Such as non-zero exit code. 
- */
-class KonanExternalToolFailure(message: String = "", cause: Throwable? = null) : KonanException(message, cause)
-

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanConfig.kt

@@ -20,9 +20,7 @@ import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.backend.konan.descriptors.createForwardDeclarationsModule
 import org.jetbrains.kotlin.backend.konan.library.*
 import org.jetbrains.kotlin.backend.konan.library.impl.*
-import org.jetbrains.kotlin.backend.konan.util.profile
-import org.jetbrains.kotlin.backend.konan.util.removeSuffixIfPresent
-import org.jetbrains.kotlin.backend.konan.util.suffixIfNot
+import org.jetbrains.kotlin.backend.konan.util.*
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
@@ -44,15 +42,16 @@ class KonanConfig(val project: Project, val configuration: CompilerConfiguration
     internal val targetManager = TargetManager(
         configuration.get(KonanConfigKeys.TARGET))
 
-    val indirectBranchesAreAllowed = targetManager.target != KonanTarget.WASM32
+    private val target = targetManager.target
 
     init {
-        val target = targetManager.target
         if (!target.enabled) {
             error("Target $target is not available on the ${TargetManager.host} host")
         }
     }
 
+    val indirectBranchesAreAllowed = target != KonanTarget.WASM32
+
     private fun Distribution.prepareDependencies(checkDependencies: Boolean) {
         if (checkDependencies) {
             DependencyProcessor(java.io.File(dependenciesDir), targetProperties).run()
@@ -65,10 +64,17 @@ class KonanConfig(val project: Project, val configuration: CompilerConfiguration
         prepareDependencies(configuration.getBoolean(KonanConfigKeys.CHECK_DEPENDENCIES))
     }
 
+    internal val clang = TargetClang(distribution.properties, distribution.dependenciesDir, target)
+
     internal val produce get() = configuration.get(KonanConfigKeys.PRODUCE)!!
-    private val suffix = produce.suffix(targetManager.target)
+    private val prefix = produce.prefix(target)
+    private val suffix = produce.suffix(target)
     val outputName = configuration.get(KonanConfigKeys.OUTPUT)?.removeSuffixIfPresent(suffix) ?: produce.name.toLowerCase()
-    val outputFile = outputName.suffixIfNot(produce.suffix(targetManager.target))
+    val outputFile = outputName
+        .prefixIfNot(prefix)
+        .suffixIfNot(suffix)
+
+    val tempFiles = TempFiles(outputName)
 
     val moduleId: String
         get() = configuration.get(KonanConfigKeys.MODULE_NAME) ?: File(outputName).name
@@ -85,13 +91,13 @@ class KonanConfig(val project: Project, val configuration: CompilerConfiguration
     internal val immediateLibraries: List<LibraryReaderImpl> by lazy {
         val result = resolver.resolveImmediateLibraries(
                 libraryNames,
-                targetManager.target,
+                target,
                 currentAbiVersion,
                 configuration.getBoolean(KonanConfigKeys.NOSTDLIB),
                 configuration.getBoolean(KonanConfigKeys.NODEFAULTLIBS),
                 { msg -> configuration.report(STRONG_WARNING, msg) } 
         )
-        resolver.resolveLibrariesRecursive(result, targetManager.target, currentAbiVersion)
+        resolver.resolveLibrariesRecursive(result, target, currentAbiVersion)
         result
     }
 

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/TempFiles.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.kotlin.backend.konan
+
+import org.jetbrains.kotlin.konan.file.File
+import org.jetbrains.kotlin.konan.file.*
+
+class TempFiles(val outputName: String) {
+    val nativeBinaryFile    by lazy { File("${outputName}.kt.bc") }
+    val cAdapterHeader      by lazy { File("${outputName}_api.h") }
+    val cAdapterCpp         by lazy { createTempFile("api", ".cpp").deleteOnExit() }
+    val cAdapterBitcode     by lazy { createTempFile("api", ".bc").deleteOnExit() }
+
+    val nativeBinaryFileName    get() = nativeBinaryFile.absolutePath
+    val cAdapterHeaderName      get() = cAdapterHeader.absolutePath
+    val cAdapterCppName         get() = cAdapterCpp.absolutePath
+    val cAdapterBitcodeName     get() = cAdapterBitcode.absolutePath
+}
+

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/util/util.kt

@@ -36,10 +36,13 @@ fun nTabs(amount: Int): String {
     return String.format("%1$-${(amount+1)*4}s", "") 
 }
 
+fun String.prefixIfNot(prefix: String) =
+    if (this.startsWith(prefix)) this else "$prefix$this"
+
 fun String.suffixIfNot(suffix: String) =
     if (this.endsWith(suffix)) this else "$this$suffix"
 
 fun String.removeSuffixIfPresent(suffix: String) =
     if (this.endsWith(suffix)) this.dropLast(suffix.length) else this
 
-fun <T> Lazy<T>.getValueOrNull(): T? = if (isInitialized()) value else null
+fun <T> Lazy<T>.getValueOrNull(): T? = if (isInitialized()) value else null

shared/src/main/kotlin/org/jetbrains/kotlin/konan/exec/ExecuteCommand.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.konan.exec
+
+import java.lang.ProcessBuilder
+import java.lang.ProcessBuilder.Redirect
+
+fun executeCommand(command: List<String>) =
+    executeCommand(*command.toTypedArray())
+
+fun executeCommand(vararg command: String): Int {
+    // TODO: need a verbose logger here.
+
+    val builder = ProcessBuilder(command.asList())
+
+    builder.redirectOutput(Redirect.INHERIT)
+    builder.redirectInput(Redirect.INHERIT)
+    builder.redirectError(Redirect.INHERIT)
+
+    val process = builder.start()
+    val exitCode = process.waitFor()
+    return exitCode
+}
+
+fun runTool(command: List<String>) =
+    runTool(*command.toTypedArray())
+
+fun runTool(vararg command: String) {
+    val code = executeCommand(*command)
+    if (code != 0) error("The ${command[0]} command returned non-zero exit code: $code.")
+}
+

shared/src/main/kotlin/org/jetbrains/kotlin/konan/file/File.kt

@@ -103,10 +103,11 @@ data class File constructor(internal val javaPath: Path) {
         })
 
     }
-    fun deleteOnExit() {
+    fun deleteOnExit(): File {
         // Works only on the default file system, 
         // but that's okay for now.
         javaPath.toFile().deleteOnExit()
+        return this // Allow streaming.
     }
     fun readBytes() = Files.readAllBytes(javaPath)
     fun writeBytes(bytes: ByteArray) = Files.write(javaPath, bytes)
@@ -136,6 +137,7 @@ data class File constructor(internal val javaPath: Path) {
     // TODO: Consider removeing these after konanazing java.util.Properties.
     fun bufferedReader() = Files.newBufferedReader(javaPath)
     fun outputStream() = Files.newOutputStream(javaPath)
+    fun printWriter() = javaPath.toFile().printWriter()
 
     companion object {
         val userDir

shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/ClangManager.kt

@@ -39,5 +39,21 @@ class ClangManager(val properties: Properties, val baseDir: String) {
         = (hostClang.commonClangArgs + targetClangArgs[target]!!.specificClangArgs).toTypedArray()
 
     val hostCompilerArgsForJni = hostClang.hostCompilerArgsForJni.toTypedArray()
+
+    fun targetClangCmd(target: KonanTarget)
+        = listOf("${hostClang.llvmDir}/bin/clang") + targetClangArgs(target)
+
+    fun targetClangXXCmd(target: KonanTarget)
+        = listOf("${hostClang.llvmDir}/bin/clang++") + targetClangArgs(target)
 }
 
+class TargetClang(private val clangManager: ClangManager, private val target: KonanTarget) {
+    constructor (properties: Properties, baseDir: String, target: KonanTarget) 
+        : this (ClangManager(properties, baseDir), target)
+
+    fun clangC(vararg userArgs: String) = clangManager.targetClangCmd(target) + userArgs.asList()
+
+    fun clangCXX(vararg userArgs: String) = clangManager.targetClangXXCmd(target) + userArgs.asList()
+}
+
+

shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/KonanTarget.kt

@@ -16,13 +16,13 @@
 
 package org.jetbrains.kotlin.konan.target
 
-enum class Family(name:String, val exeSuffix:String, val dynamicSuffix: String?) {
-    OSX("osx", "kexe", "dylib"),
-    IOS("ios", "kexe", "dylib"),
-    LINUX("linux", "kexe", "so"),
-    WINDOWS("windows", "exe", "dll"),
-    ANDROID("android", "so", "so"),
-    WASM("wasm", "wasm", "wasm")
+enum class Family(name:String, val exeSuffix:String, val dynamicPrefix: String, val dynamicSuffix: String) {
+    OSX(    "osx"    , "kexe", "lib", "dylib"),
+    IOS(    "ios"    , "kexe", "lib", "dylib"),
+    LINUX(  "linux"  , "kexe", "lib", "so"   ),
+    WINDOWS("windows", "exe" , ""   , "dll"  ),
+    ANDROID("android", "so"  , "lib", "so"   ),
+    WASM(   "wasm"   , "wasm", ""   , "wasm" )
 }
 
 enum class Architecture(val bitness: Int) {
@@ -62,6 +62,7 @@ enum class CompilerOutputKind {
     },
     DYNAMIC {
         override fun suffix(target: KonanTarget?) = ".${target!!.family.dynamicSuffix}"
+        override fun prefix(target: KonanTarget?) = ".${target!!.family.dynamicPrefix}"
     },
     FRAMEWORK {
         override fun suffix(target: KonanTarget?): String = ".framework"
@@ -74,6 +75,7 @@ enum class CompilerOutputKind {
     };
 
     abstract fun suffix(target: KonanTarget? = null): String
+    open fun prefix(target: KonanTarget? = null): String = ""
 }
 
 class TargetManager(val userRequest: String? = null) {