Make interop tool generate one self-contained .kt.bc

INTEROP.md

@@ -10,7 +10,7 @@ everything needed to interact with an external library.
 
  Following workflow is expected when interacting with the native library.
    * create `.def` file describing what to include into bindings
-   * use `interop` tool to produce `stubs.bc` and Kotlin bindings
+   * use `interop` tool to produce Kotlin bindings
    * run _Kotlin N_ compiler on an application to produce the final executable
 
  Interoperability tool analyses C headers and produces "natural" mapping of
@@ -24,11 +24,11 @@ Build the dependencies and the compiler (see `README.md`).
 Prepare stubs for the system sockets library:
 
     cd samples/socket
-    ../../dist/bin/interop -def:sockets.def
+    ../../dist/bin/interop -def:sockets.def -o:sockets.kt.bc
 
 Compile the echo server:
 
-    ../../dist/bin/kotlinc EchoServer.kt sockets -nativelibrary socketsstubs.bc \
+    ../../dist/bin/kotlinc EchoServer.kt -library sockets.kt.bc \
      -o EchoServer.kexe
 
 This whole process is automated in `build.sh` script, which also support cross-compilation
@@ -60,10 +60,10 @@ Structurally it's a simple property file, looking like this:
 Then run interop tool with something like (note that for host libraries not included
 in sysroot search paths for headers may be needed):
 
-    interop -def:zlib.def -copt:-I/opt/local/include
+    interop -def:zlib.def -copt:-I/opt/local/include -o:zlib.kt.bc
 
-This command will produce directory named `zlib` containing file `zlib.kt`
-and file `zlibstubs.bc` containing implementation specific glue bitcode.
+This command will produce `zlib.kt.bc` compiled library and
+`zlib.kt.bc-build/kotlin` directory containing Kotlin source code for the library.
 
 If behavior for certain platform shall be modified, one may use format like
 `compilerOpts.osx` or `compilerOpts.linux` to provide platform-specific values

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/main.kt

@@ -112,6 +112,14 @@ private fun Properties.getSpaceSeparated(name: String): List<String> {
     return this.getProperty(name)?.split(' ')?.filter { it.isNotEmpty() } ?: emptyList()
 }
 
+private fun <T> Collection<T>.atMostOne(): T? {
+    return when (this.size) {
+        0 -> null
+        1 -> this.iterator().next()
+        else -> throw IllegalArgumentException("Collection has more than one element.")
+    }
+}
+
 private fun Properties.getOsSpecific(name: String, 
     host: String = detectHost()): String? {
 
@@ -323,7 +331,7 @@ private fun processLib(konanHome: String,
     val outKtFileRelative = (fqParts + outKtFileName).joinToString("/")
     val outKtFile = File(ktGenRoot, outKtFileRelative)
 
-    val libName = fqParts.joinToString("") + "stubs"
+    val libName = args["-cstubsname"]?.atMostOne() ?: fqParts.joinToString("") + "stubs"
 
     val library = NativeLibrary(headerFiles, compilerOpts, language, excludeSystemLibs)
     val configuration = InteropConfiguration(

cmd/interop

@@ -10,6 +10,8 @@ fi
 declare -a java_args
 declare -a interop_args
 
+OUTPUT_FILE_NAME=nativelib.kt.bc
+
 while [ $# -gt 0 ]; do
   case "$1" in
     -D*)
@@ -20,6 +22,10 @@ while [ $# -gt 0 ]; do
       java_args=("${java_args[@]}" "${1:2}")
       shift
       ;;
+    -o:*)
+      OUTPUT_FILE_NAME="${1:3}"
+      shift
+      ;;
      *)
       interop_args=("${interop_args[@]}" "$1")
       shift
@@ -54,11 +60,24 @@ INTEROP_TOOL=org.jetbrains.kotlin.native.interop.gen.jvm.MainKt
 
 FLAVOR_ARG=-flavor:native
 
+GENERATED_DIR="$OUTPUT_FILE_NAME-build/kotlin"
+GENERATED_ARG="-generated:$GENERATED_DIR"
+NATIVES_DIR="$OUTPUT_FILE_NAME-build/natives"
+NATIVES_ARG="-natives:$NATIVES_DIR"
+CSTUBSNAME=cstubs
+CSTUBSNAME_ARG="-cstubsname:$CSTUBSNAME"
+
 LIBCLANG_DISABLE_CRASH_RECOVERY=1 \
 LD_LIBRARY_PATH=${NATIVE_LIB} \
 $JAVACMD $JAVA_OPTS ${java_args[@]} \
     -cp $INTEROP_CLASSPATH \
     $INTEROP_TOOL \
+    "$GENERATED_ARG" "$NATIVES_ARG" "$CSTUBSNAME_ARG" \
     $FLAVOR_ARG "${interop_args[@]}" \
+    || exit 1
 
+# Stubs may be rather big, so we may need more heap space.
+XMX_ARG=-J-Xmx3G
 
+$KONAN_HOME/bin/konanc $XMX_ARG "$GENERATED_DIR" -nolink -nativelibrary "$NATIVES_DIR/$CSTUBSNAME.bc" \
+    -o "$OUTPUT_FILE_NAME"

samples/csvparser/build.sh

@@ -18,5 +18,5 @@ LINKER_ARGS=${!var}
 var=COMPILER_ARGS_${TARGET}
 COMPILER_ARGS=${!var} # add -opt for an optimized build.
 
-interop -def:$DIR/stdio.def -copt:"$CFLAGS" -target:$TARGET || exit 1
-konanc $COMPILER_ARGS -target $TARGET $DIR/CsvParser.kt stdio -nativelibrary stdiostubs.bc -o CsvParser.kexe || exit 1
+interop -def:$DIR/stdio.def -copt:"$CFLAGS" -target:$TARGET -o:stdio.kt.bc || exit 1
+konanc $COMPILER_ARGS -target $TARGET $DIR/CsvParser.kt -library stdio.kt.bc -o CsvParser.kexe || exit 1

samples/gitchurn/build.sh

@@ -23,5 +23,5 @@ LINKER_ARGS=${!var}
 var=COMPILER_ARGS_${TARGET}
 COMPILER_ARGS=${!var} # add -opt for an optimized build.
 
-interop -copt:$CFLAGS -def:$DIR/libgit2.def -target:$TARGET || exit 1
-konanc -target $TARGET src libgit2 -nativelibrary libgit2stubs.bc -linkerArgs "$LINKER_ARGS" -o GitChurn.kexe || exit 1
+interop -copt:$CFLAGS -def:$DIR/libgit2.def -target:$TARGET -o:libgit2.kt.bc || exit 1
+konanc -target $TARGET src -library libgit2.kt.bc -linkerArgs "$LINKER_ARGS" -o GitChurn.kexe || exit 1

samples/opengl/build.sh

@@ -21,6 +21,5 @@ LINKER_ARGS=${!var}
 var=COMPILER_ARGS_${TARGET}
 COMPILER_ARGS=${!var} # add -opt for an optimized build.
 
-interop -def:$DIR/opengl.def -target:$TARGET || exit 1
-# OpenGL stubs are rather big, so we need more heap space.
-konanc -J-Xmx3G -target $TARGET opengl $DIR/OpenGlTeapot.kt -nativelibrary openglstubs.bc -linkerArgs "$LINKER_ARGS" -o OpenGlTeapot.kexe || exit 1
+interop -def:$DIR/opengl.def -target:$TARGET -o:opengl.kt.bc || exit 1
+konanc -target $TARGET $DIR/OpenGlTeapot.kt -library opengl.kt.bc -linkerArgs "$LINKER_ARGS" -o OpenGlTeapot.kexe || exit 1

samples/socket/build.sh

@@ -18,5 +18,5 @@ LINKER_ARGS=${!var}
 var=COMPILER_ARGS_${TARGET}
 COMPILER_ARGS=${!var} # add -opt for an optimized build.
 
-interop -def:$DIR/sockets.def -copt:"$CFLAGS" -target:$TARGET || exit 1
-konanc $COMPILER_ARGS -target $TARGET $DIR/EchoServer.kt sockets -nativelibrary socketsstubs.bc -o EchoServer.kexe || exit 1
+interop -def:$DIR/sockets.def -copt:"$CFLAGS" -target:$TARGET -o:sockets.kt.bc || exit 1
+konanc $COMPILER_ARGS -target $TARGET $DIR/EchoServer.kt -library sockets.kt.bc -o EchoServer.kexe || exit 1

samples/tetris/build.sh

@@ -39,6 +39,6 @@ LINKER_ARGS=${!var}
 var=COMPILER_ARGS_${TARGET}
 COMPILER_ARGS=${!var} # add -opt for an optimized build.
 
-interop -def:$DIR/sdl.def -copt:"$CFLAGS" -target:$TARGET || exit 1
-konanc $COMPILER_ARGS -target $TARGET sdl $DIR/Tetris.kt -nativelibrary sdlstubs.bc -linkerArgs "$LINKER_ARGS" -o Tetris.kexe || exit 1
+interop -def:$DIR/sdl.def -copt:"$CFLAGS" -target:$TARGET -o:sdl.kt.bc || exit 1
+konanc $COMPILER_ARGS -target $TARGET $DIR/Tetris.kt -library sdl.kt.bc -linkerArgs "$LINKER_ARGS" -o Tetris.kexe || exit 1
 #strip Tetris.kexe