Experimental support for compiling to WebAssembly using Emscripten (not yet working) (nw)

makefile

@@ -742,6 +742,10 @@ endif
 ifdef DEBUG_ARGS
 PARAMS += --DEBUG_ARGS='$(DEBUG_ARGS)'
 endif
+
+ifdef WEBASSEMBLY
+PARAMS += --WEBASSEMBLY='$(WEBASSEMBLY)'
+endif
 #-------------------------------------------------
 # All scripts
 #-------------------------------------------------

scripts/genie.lua

@@ -377,6 +377,11 @@ newoption {
 	description = "Arguments for running debug build.",
 }
 
+newoption {
+	trigger = "WEBASSEMBLY",
+	description = "Produce WebAssembly output when building with Emscripten.",
+}
+
 dofile ("extlib.lua")
 
 if _OPTIONS["SHLIB"]=="1" then

scripts/src/main.lua

@@ -137,6 +137,11 @@ end
 					.. " -s DEMANGLE_SUPPORT=1"
 			end
 
+			if _OPTIONS["WEBASSEMBLY"] then
+				emccopts = emccopts
+					.. " -s BINARYEN=1"
+			end
+
 			if _OPTIONS["ARCHOPTS"] then
 				emccopts = emccopts .. " " .. _OPTIONS["ARCHOPTS"]
 			end