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defined MOO_EXPORT to EMSCRIPTEN_KEEPALIVE for EMSCRIPTEN

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hyunghwan.chung 2019-07-14 16:34:16 +00:00
parent 0d5956547a
commit 7b4e179560
2 changed files with 83 additions and 1 deletions
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77
moo/emcc.txt Normal file
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@ -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
<!DOCTYPE html>
<html>
<head><meta charset="utf-8" /></head>
<body>
<input type="button" value="Test" onclick="do_test();" />
<script type="text/javascript">
var g_WebWorker = new Worker("moo.worker.js");
//if (typeof(WebAssembly) === 'undefined')
//{
// alert ('No web assebly support in this browser');
//}
g_WebWorker.onerror = function (evt) { console.log(`Error from Web Worker: ${evt.message}`); }
g_WebWorker.onmessage = function (evt) { console.log(`Message from the Web Worker:\n\n ${evt.data}`); }
function do_test() {
g_WebWorker.postMessage({ "cmd": "test-moo", "data": "nothing as of now.." });
}
</script>
</body>
</html>

7
moo/lib/moo-cmn.h
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@ -60,6 +60,7 @@
# undef MOO_SIZEOF_LONG # undef MOO_SIZEOF_LONG
# define MOO_SIZEOF_LONG MOO_SIZEOF_INT # define MOO_SIZEOF_LONG MOO_SIZEOF_INT
# endif # endif
# include <emscripten/emscripten.h> /* EMSCRIPTEN_KEEPALIVE */
#endif #endif
#if defined(__GNUC__) && defined(__arm__) && !defined(__ARM_ARCH) #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 * 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_IMPORT
# define MOO_EXPORT # define MOO_EXPORT
# define MOO_PRIVATE # define MOO_PRIVATE