Update WASM documentation (#1207)

WASM_Support.md

@@ -16,16 +16,43 @@
 
 # WASM Support
 
+oneTBB extends its capabilities by offering robust support for ``WASM``. 
+
 ``WASM`` stands for WebAssembly, a low-level binary format for executing code in web browsers. 
-It is designed to be a portable target for compilers and to be efficient to parse and execute. 
+It is designed to be a portable target for compilers and efficient to parse and execute. 
+
+Using oneTBB with WASM, you can take full advantage of parallelism and concurrency while working on web-based applications, interactive websites, and a variety of other WASM-compatible platforms.
+
+oneTBB offers WASM support through the integration with [Emscripten*](https://emscripten.org/docs/introducing_emscripten/index.html), a powerful toolchain for compiling C and C++ code into WASM-compatible runtimes. 
+
+## Build
+
+**Prerequisites:** Download and install Emscripten*. See the [instructions](https://emscripten.org/docs/getting_started/downloads.html). 
+
+To build the system, run:
+
+```
+mkdir build && cd build
+emcmake cmake .. -DCMAKE_CXX_COMPILER=em++ -DCMAKE_C_COMPILER=emcc -DTBB_STRICT=OFF -DCMAKE_CXX_FLAGS=-Wno-unused-command-line-argument -DTBB_DISABLE_HWLOC_AUTOMATIC_SEARCH=ON -DBUILD_SHARED_LIBS=ON -DTBB_EXAMPLES=ON -DTBB_TEST=ON
+cmake --build . <options>
+cmake --install . <options>
+```
+
+Where:
+
+* ``emcmake`` - a tool that sets up the environment for Emscripten*. 
+* ``-DCMAKE_CXX_COMPILER=em++`` - specifies the C++ compiler as Emscripten* C++ compiler. 
+* ``-DCMAKE_C_COMPILER=emcc`` - specifies the C compiler as Emscripten* C compiler.
+
 
-WebAssembly aims to provide a fast, efficient, and safe way to run code in web browsers without needing plugins or other software. Code written in a variety of programming languages, including C, C++, Rust and others, can be compiled into WebAssembly format for use in web pages. This allows you to write high-performance applications that run directly in the browser.
+> **_NOTE:_** See [CMake documentation](https://github.com/oneapi-src/oneTBB/blob/master/cmake/README.md) to learn about other options. 
 
-We currently have an [under development branch that provides you with WASM support](https://github.com/oneapi-src/oneTBB/tree/tbb_wasm). 
 
-By using WASM, you can:
-* Create highly performant and scalable applications that can meet the demands of modern web-based systems. 
-* Take advantage of oneTBB features to optimize the performance of your web-based applications.
+## Run Test
 
+To run tests, use:
 
+```
+ctest
+```