Using external AS3 classes in a FlasCC SWC

Question

I am building a Flascc SWC, which is to be used in a regular Flash swf, build in FlashBuilder 4.6.
I have managed to build an API that uses regular built-in types, like Number, uint.  However, when I try to pass in or out a class type of my own creation, I had build problems building my swf.
I figured it out, and I thought I would share it.  Perhaps Adobe could include this example in a blog, or in the next set of SWC samples, so that people know how to do this.
File Bob.as
package me {
     public class Bob {
          private var _x : int;
          public function Bob() {}
          public function set x( val:int ) : void {
               _x = val;         
          public function get x():int {
               return _x;
2) Compile in FlashBuilder to Bob.swc
3) Create Library.cpp
#include <AS3/AS3.h>
#include <AS3/AS3++.h>
using namespace AS3::local;
var impl_make_Bob( int count )
     var ns = internal::new_Namespace("me", 35);
     var className = internal::new_String("Bob");
     var cc = internal::getlex(ns, className);
     var bob = internal::construct(cc);
     var xProperty = internal::new_String("x");
     var newX = internal::new_int( count );
     internal::setproperty(bob, xProperty, newX);
     return bob;
void thunk_makeBob() __attribute__((used,
     annotate("as3import:me.Bob"),
     annotate("as3sig:public function thunk_makeBob(count:int):Bob"),
     annotate("as3package:me.SWCLibrary")));
void thunk_makeBob() {
     int local_count;
     AS3_GetScalarFromVar(local_count, count);
     var retVal = impl_makeBob(local_count);
     AS3_DeclareVar(as3Val,Bob);
     AS3_CopyVarxxToVar(as3Val, retVal);
     AS3_ReturnAS3Var(as3Val);
int main() {
     AS3GoAsync();
4) Use FlasCC to Compile the Library.cpp to SWCLibrary.swc (me.SWCLibrary)
#Using the same environment as the FlasCC_1.0.0 samples, compile with a Makefile,
T01: check
     "$(FLASCC)/usr/bin/g++" $(BASE_CFLAGS) \
          -fllvm-llc-opt=-ascopt=-le -fllvm-llc-opt=-ascopt=E:/myProject/myLibrary/Bob.swc \
          -O4 Library.cpp -emit-swc=me.SWCLibrary -o SWCLibrary.swc -lFlash++ -lAS3++
include ../Makefile.common
clean:
     rm -f SWCLibrary.swc *.bc *.abc *.exe
5) Create a new Wrapper.swc that embeds (merges) Bob.swc and SWCLibrary.swc , in FlashBuilder
package me{
     public class WrapperFlascc {
          import me.SWCLibrary.CModule;
               me.SWCLibrary.CModule.startAsync(null);
          import me.Bob;
          public static function makeBob( count : int ) : Bob {
               return me.SWCLibrary.thunk_makeBob(count);
NOTE: It may not be best to embed Bob.swc , if Bob.swc had classes that aren't referenced by Wrapper.swc or SWCLibrary.swc .  They could be lost.  Instead, link it in the final swf.
This Wrapper.swc can then be used as normal in a FlashBuilder project.  I am not creating a C++ app, but rather using flasCC as an alchemy replacement.
Perhaps there was a better way?  Anyway, I hope this helps someone.

Answer 1

Shortly after I posted my question, I realized I had to check "Export for runtime sharing" for each object.
-- Brian