Some examples fails to build on WebAssembly

RTA test updated to build only a subset of modules on wasm. Currently  test is building examples from following directories (installDir/Examples/Qt-5.13.0/):

aggregate
corelib
dbus
embedded
gui
network
opengl
qmake
qpa
qtconcurrent
qtestlib
sql
vulkan
widgets
xml
quick
quickcontrols
quickcontrols2

Please let me know if one of those is just not supported on wasm, or something is misconfigured (test uses same virtual machines coin uses for building wasm binaries). From the examples listed above 252 are build successfully, but following fail with various reasons:

/corelib/ipc/sharedmemory
/corelib/threads/semaphoresdbus/chat
/dbus/complexpingpong
/dbus/listnames
/dbus/pingpong
/dbus/remotecontrolledcar/car
/dbus/remotecontrolledcar/controller
/embedded/lightmaps
/network/bearermonitor
/network/blockingfortuneclient
/network/fortuneclient
/network/fortuneserver
/network/multicastreceiver
/network/multistreamclient
/network/multistreamserver
/network/network-chat
/network/securesocketclient
/network/secureudpclient
/network/secureudpserver
/network/threadedfortuneserver
/network/torrent
/opengl/legacy/framebufferobject2
/opengl/legacy/grabber
/opengl/legacy/hellogl
/opengl/legacy/overpainting
/opengl/legacy/pbuffers
/opengl/legacy/pbuffers2
/opengl/legacy/samplebuffers
/qmake/precompile
/qtconcurrent/imagescaling
/qtconcurrent/map
/qtconcurrent/progressdialog
/qtconcurrent/runfunction
/qtconcurrent/wordcount
/quick/customitems/painteditem
/quickcontrols2/chattutorial/chapter4-models
/quickcontrols2/chattutorial/chapter5-styling
/sql/books
/sql/cachedtable
/sql/drilldown
/sql/masterdetail
/sql/querymodel
/sql/relationaltablemodel
/sql/sqlbrowser
/sql/sqlwidgetmapper
/sql/tablemodel
/svg/network/bearercloud
/svg/opengl/framebufferobject
/vulkan/hellovulkancubes
/vulkan/hellovulkantexture
/vulkan/hellovulkantriangle
/vulkan/hellovulkanwidget
/widgets/graphicsview/boxes
/widgets/tools/plugandpaint/app

Please let me know if more info is needed!