Support compiling demos in wasm build

subprojects/bindbc-loader.wrap

@@ -1,6 +1,7 @@
 [wrap-git]
-url = https://github.com/BindBC/bindbc-loader.git
-revision = 9a51af991acce3c67e51695c07bf3fa6419ef938
+url = https://github.com/mmcomando/bindbc-loader.git
+push-url = https://github.com/BindBC/bindbc-loader.git
+revision = wasm
 patch_directory = bindbc-loader
 
 [provide]

subprojects/bindbc-sdl.wrap

@@ -1,6 +1,7 @@
 [wrap-git]
-url = https://github.com/BindBC/bindbc-sdl.git
-revision = 5c936064b7226630f5080f4b12b77ee39c8ac64b
+url = https://github.com/mmcomando/bindbc-sdl.git
+push-url = https://github.com/BindBC/bindbc-sdl.git
+revision = wasm
 patch_directory = bindbc-sdl
 
 [provide]

subprojects/packagefiles/bindbc-loader/meson.build

@@ -3,12 +3,17 @@ project('bindbc-loader', 'd', version : '0.3.2', default_options: ['default_libr
 # Files
 src = files(
 	'source/bindbc/loader/package.d',
-	'source/bindbc/loader/sharedlib.d',
+	# 'source/bindbc/loader/sharedlib.d', # Not implemented for wasm
 	'source/bindbc/loader/system.d',
 )
 
 inc = include_directories('source')
 
+if host_machine.cpu_family() != 'wasm32'
+	src = files(
+		'source/bindbc/loader/sharedlib.d',
+	)
+endif
 # Dependencies
 lib = library('bindbc-loader', src,
 	include_directories : [inc],

subprojects/packagefiles/cimgui/meson.build

@@ -1,24 +1,33 @@
-project('cimgui', 'cpp', version : '1.73.0', default_options: ['default_library=shared', 'warning_level=1'])
+project('cimgui', 'cpp', version : '1.73.0', default_options: ['default_library=static', 'warning_level=1'])
 
 # Files
-src = [
+src = files(
 	'cimgui.cpp',
 	'imgui/imgui.cpp',
 	'imgui/imgui_draw.cpp',
 	'imgui/imgui_demo.cpp',
 	'imgui/imgui_widgets.cpp',
-]
+)
 
 inc = [ '.' ]
+inc +='imgui/examples/'
 pub_inc = [ 'imgui' ]
 
-# Dependencies
-# bindbc_loader_dep = dependency('bindbc-loader')
+if host_machine.cpu_family() == 'wasm32'
+	# For wasm we use C++ events/image handling implementation
+	src += files(
+		'imgui/examples/imgui_impl_opengl3.cpp',
+		'imgui/examples/imgui_impl_sdl.cpp',
+	)
+endif
 
-lib = shared_library('cimgui', src,
-	# dependencies : bindbc_loader_dep,
+
+add_project_arguments('-DIMGUI_IMPL_API=extern "C" ', language : 'cpp')
+
+# Dependencies
+lib = library('cimgui', src,
 	include_directories : [inc, pub_inc],
-	# pic : true,
+	pic : true,
 )
 
 cimgui_dep = declare_dependency(