diff --git a/moo/emcc.txt b/moo/emcc.txt
new file mode 100644
index 0000000..42cb3f3
--- /dev/null
+++ b/moo/emcc.txt
@@ -0,0 +1,77 @@
+Temporary notes on how to build libmoo to web assembly with emscripten.
+
+#### How to Build
+ mkdir -p bld/emcc
+ cd blc/emcc
+ emconfigure ../../configure --prefix=${HOME}/xxx-emcc --disable-shared --enable-dynamic-module --disable-mod-x11 --disable-mod-con --disable-mod-sck CFLAGS="-Wall -O2 -g"
+ emmake make
+ ##emcc lib/.libs/libmoo.a -s WASM=1 -s EXPORT_ALL=1 -s LINKABLE=1 -o libmoo.js
+ #if you have defined MOO_EXPORT as EMSCRIPTEN_KEEPALIVE, the following will do
+ ##emcc lib/.libs/libmoo.a -s WASM=1 -s -s LINKABLE=1 -o libmoo.js
+ ###emcc lib/.libs/libmoo.a lib/.libs/libmoox.a -s WASM=1 -s -s LINKABLE=1 -o libmoo.js
+ emcc lib/.libs/libmoo.a lib/.libs/libmoox.a -s WASM=1 -s -s LINKABLE=1 -s EXTRA_EXPORTED_RUNTIME_METHODS="['ccall']" -o libmoo.js
+
+#### moo.worker.js
+
+self.importScripts('libmoo.js');
+self.__ready = false;
+
+Module.onRuntimeInitialized = function()
+{
+ self.__ready = true;
+ console.log ('runtime is ready now...');
+}
+
+const libmoo = {
+ open: Module.cwrap('moo_openstd', 'number', ['number', 'number', 'number']),
+ close: Module.cwrap('moo_close', '', ['number'])
+};
+
+self.onmessage = function (evt) {
+ var objData = evt.data;
+
+ var cmd = objData.cmd;
+ if (cmd === "test-moo")
+ {
+ //var x = Module.ccall('moo_openstd', [0, null, null]);
+ //Module.ccall('moo_close', x);
+
+ if (self.__ready)
+ {
+ var moo = libmoo.open(0, null, null);
+ self.postMessage ('XXXXXXXXXXXXXXXx - ' + moo);
+ libmoo.close (moo);
+ }
+ }
+}
+
+#### moo.html
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/moo/lib/moo-cmn.h b/moo/lib/moo-cmn.h
index f3b1d36..a0ce0f8 100644
--- a/moo/lib/moo-cmn.h
+++ b/moo/lib/moo-cmn.h
@@ -60,6 +60,7 @@
# undef MOO_SIZEOF_LONG
# define MOO_SIZEOF_LONG MOO_SIZEOF_INT
# endif
+# include /* EMSCRIPTEN_KEEPALIVE */
#endif
#if defined(__GNUC__) && defined(__arm__) && !defined(__ARM_ARCH)
@@ -777,7 +778,11 @@ typedef struct moo_t moo_t;
* MACROS THAT CHANGES THE BEHAVIORS OF THE C COMPILER/LINKER
* =========================================================================*/
-#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
+#if defined(EMSCRIPTEN)
+# define MOO_IMPORT
+# define MOO_EXPORT EMSCRIPTEN_KEEPALIVE
+# define MOO_PRIVATE
+#elif defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
# define MOO_IMPORT
# define MOO_EXPORT
# define MOO_PRIVATE