Qt/Qml With Chrome Native Client (NaCl)

QtNaCl.sh

#!/bin/bash

set -e

# Install NaCl
wget http://storage.googleapis.com/nativeclient-mirror/nacl/nacl_sdk/nacl_sdk.zip
unzip nacl_sdk.zip
rm nacl_sdk.zip   
nacl_sdk/naclsdk list

# get the latest stable bender
nacl_sdk/naclsdk install pepper_47
NACL_SDK_ROOT=$(pwd)/$(find ./nacl_sdk -maxdepth 1 -type d -name "pepper*") 
echo "export NACL_SDK_ROOT=$NACL_SDK_ROOT">> ~/.bashrc
source ~/.bashrc

# Checkout Qt 5.6.0

git clone git://code.qt.io/qt/qt5.git Qt5.6
cd Qt5.6
git checkout 5.6
perl init-repository
git checkout 5.6
cd ..

cd Qt5.6/qtbase
git checkout wip/nacl

cd ../qtdeclarative
git checkout wip/nacl

cd ../qtxmlpatterns
git apply ../../qtxmlpatterns.patch
cd ../..

mkdir QtNaCl_56
cd QtNaCl_56
../Qt5.6/qtbase/nacl-configure linux_x86_newlib release 64

make module-qtbase -j6
make module-qtdeclarative -j6
make module-qtquickcontrols -j6

#running the example
# cd ../Qt5.4.2/qtdeclarative/examples/nacl
# mkdir build
# cd build
# ../../../../../QtNacl_5.4/qtbase/bin/qmake ..
# make
# ../../../../../QtNacl_5.4/qtbase/bin/nacldeployqt nacl.nexe --run

qtxmlpatterns.patch

diff --git a/tools/tools.pro b/tools/tools.pro
index 92bbaca..0040747 100644
--- a/tools/tools.pro
+++ b/tools/tools.pro
@@ -1,9 +1,11 @@
 TEMPLATE = subdirs

 load(qfeatures)
-!android|android_app {
-    SUBDIRS += xmlpatterns
-    !contains(QT_DISABLED_FEATURES, xmlschema) {
-        SUBDIRS += xmlpatternsvalidator
+!nacl {
+    !android|android_app {
+        SUBDIRS += xmlpatterns
+        !contains(QT_DISABLED_FEATURES, xmlschema) {
+            SUBDIRS += xmlpatternsvalidator
+        }
     }
 }
diff --git a/tools/xmlpatterns/xmlpatterns.pro b/tools/xmlpatterns/xmlpatterns.pro
index 0f1ee4f..1172883 100644
--- a/tools/xmlpatterns/xmlpatterns.pro
+++ b/tools/xmlpatterns/xmlpatterns.pro
@@ -14,4 +14,4 @@ HEADERS = main.h                            \
 load(qt_tool)

 # with c++11 / __STRICT_ANSI__ mingw.org stdio.h doesn't declare e.g. _fileno
-win32-g++*: QMAKE_CXXFLAGS_CXX11 = -std=gnu++0x
\ No newline at end of file
+win32-g++*: QMAKE_CXXFLAGS_CXX11 = -std=gnu++0x
diff --git a/tools/xmlpatternsvalidator/xmlpatternsvalidator.pro b/tools/xmlpatternsvalidator/xmlpatternsvalidator.pro
index af9469f..21b1b18 100644
--- a/tools/xmlpatternsvalidator/xmlpatternsvalidator.pro
+++ b/tools/xmlpatternsvalidator/xmlpatternsvalidator.pro
@@ -1,6 +1,8 @@
-QT = core xmlpatterns
+!nacl {
+  QT = core xmlpatterns

-SOURCES = main.cpp
-HEADERS = main.h
+  SOURCES = main.cpp
+  HEADERS = main.h

-load(qt_tool)
+  load(qt_tool)
+}

Just forget about the script:
My apologies, I have given you bad docker command line.
Here is what should be done (I have just tested in my machine)

Qmake

I have added workdir argument so it will make things easier. we need just to call qmake add the path to the directory where .pro is present, I presume here that your main .pro is in /home/komche/RD_stage.

sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage -w=/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/qmake ..

Make

The Makefile has been generated in the previous command so as we are setting the workdir as build we need just to call make

sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage -w=/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 make

Deploy

Just be sure that the file generated is CheckRD.bc

sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage -p 8000:8000 -w=/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/nacldeployqt CheckRD.bc --run

Hi, you are right. this is project folder

However, I tried different commands you gave but next error always arises as follows:

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 bash -c "/opt/QtNaCl_56/qtbase/bin/qmake /home/komche/RD_stage -o /home/komcheRD_stage/build/"
Cannot read /home/komche/RD_stage: file to open is a directory
Error processing project file: /home/komche/RD_stage

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/qmake /home/komche/RD_stage -o /home/komche/RD_stage/build/
Cannot read /home/komche/RD_stage: file to open is a directory
Error processing project file: /home/komche/RD_stage

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/CheckRD:/home/komche/RD_stage -w=/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/qmake ..
Cannot read /home/komche: file to open is a directory
Error processing project file: ..

From the picture, the project folder is RD_stage and not CheckRD that's why it doesn't work. Then the commands should be as the following :

Qmake

sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage -w=/home/komche/RD_stage/build theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/qmake ..

Make

sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage -w=/home/komche/RD_stage/build theshadowx/qt_nacl:pepper47_qt56 make

Deploy

sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage -p 8000:8000 -w=/home/komche/RD_stage/build theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/nacldeployqt CheckRD.bc --run

Hi Ali!

Finally the makefile has been generated but only with this command:

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 /opt/QtNaCl_56/qtbase/bin/qmake /home/komche/RD_stage -o /home/komche/RD_stage/build/

Then I started command for make as follows:

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 bash -c "cd /home/komche/RD_stage/build && make"

after the process has started in this way, but has stoped with error as follows

komche@komche-K56CM:~$ sudo docker run --rm -it -v /home/komche/RD_stage:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 bash -c "cd /home/komche/RD_stage/build && make"
/opt/QtNaCl_56/qtbase/bin/uic ../service.ui -o ui_service.h
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o main.o ../main.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o service.o ../service.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o originfpl.o ../originfpl.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o anime.o ../anime.cpp
../anime.cpp:11: warning: unused parameter 'parent'
../anime.cpp: In member function 'void Anime::setXY(QList, QList)':
../anime.cpp:38: warning: comparison between signed and unsigned integer expressions
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o rd-artem.nexe_plugin_import.o rd-artem.nexe_plugin_import.cpp
/opt/QtNaCl_56/qtbase/bin/rcc -name src ../src.qrc -o qrc_src.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o qrc_src.o qrc_src.cpp
/opt/QtNaCl_56/qtbase/bin/moc -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -I/home/komche/RD_stage -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3 -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/x86_64-nacl -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/backward -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include-fixed -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include ../service.h -o moc_service.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o moc_service.o moc_service.cpp
/opt/QtNaCl_56/qtbase/bin/moc -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -I/home/komche/RD_stage -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3 -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/x86_64-nacl -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/backward -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include-fixed -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include ../originfpl.h -o moc_originfpl.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o moc_originfpl.o moc_originfpl.cpp
/opt/QtNaCl_56/qtbase/bin/moc -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -I/home/komche/RD_stage -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3 -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/x86_64-nacl -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include/c++/4.4.3/backward -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/lib/gcc/x86_64-nacl/4.4.3/include-fixed -I/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/x86_64-nacl/include ../anime.h -o moc_anime.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -m64 -c -pipe -O2 -std=gnu++0x -Wall -W -fPIC -DQ_OS_NACL_PEPPER -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../RD_stage -I. -I/opt/QtNaCl_56/qtbase/include -I/opt/QtNaCl_56/qtbase/include/QtWidgets -I/opt/QtNaCl_56/qtbase/include/QtGui -I/opt/QtNaCl_56/qtbase/include/QtCore -I. -I. -I/opt/nacl_sdk/pepper_47/include -I/opt/Qt5.6/qtbase/mkspecs/unsupported/nacl-x86-newlib-g++-64 -o moc_anime.o moc_anime.cpp
/opt/nacl_sdk/pepper_47/toolchain/linux_x86_newlib/bin/x86_64-nacl-g++ -Wl,-O1 -o RD-Artem.nexe main.o service.o originfpl.o anime.o rd-artem.nexe_plugin_import.o qrc_src.o moc_service.o moc_originfpl.o moc_anime.o -L/opt/nacl_sdk/pepper_47/lib/newlib_x86_64/Release -L/opt/QtNaCl_56/qtbase/lib -lQt5Widgets -L/opt/QtNaCl_56/qtbase/plugins/imageformats -lqico -lQt5Gui -lerror_handling -lqtharfbuzzng -lqtfreetype -lQt5Core -lppapi -lppapi_cpp -lqtpcre -lm -lppapi_gles2
/opt/nacl_sdk/pepper_47/lib/newlib_x86_64/Release/libppapi_cpp.a(ppp_entrypoints_x86_64.o): In function PPP_InitializeModule': /mnt/data/b/build/slave/sdk-rel/build/src/out/pepper_47/src/ppapi_cpp/ppp_entrypoints.cc:36: undefined reference to pp::CreateModule()'
collect2: ld returned 1 exit status
Makefile:162: recipe for target 'RD-Artem.nexe' failed
make: *** [RD-Artem.nexe] Error 1

the main function should be modified.
Have a look at :
https://github.com/msorvig/qt-nacl-manualtests/tree/dev/window_widgets

Hi, thank you for clarification of the main function. I read the your previous description:

@bgrasic here is how the main.cpp should look like
#include
#include
#include "analogclock.h"
AnalogClock *clockA = 0;
// App-provided init and exit functions:
void app_init(int argc, char **argv)
{
clockA = new AnalogClock;
clockA->show();
}
void app_exit()
{
delete clockA;
}
// Register functions with Qt. The type of register function
// selects the QApplicaiton type.
Q_GUI_MAIN(app_init, app_exit);

and inserted some changes in mine project in such way

#include "service.h"
//#include <QApplication>
//#include <QObject>
#include <QtCore>
#include <QtGui>
Service *w = 0;
void app_init(int argc, char **argv)
//int app_init(int argc, char *argv[])
{
    //QApplication a(argc, argv);
    //Service w;
    w = new Service;
    //w.show();
    w->show();
    //return a.exec();
}
void app_exit()
{
    delete w;
}
Q_GUI_MAIN(app_init, app_exit);

Then, finaly project has been compiled. Here is the content of buid folder:

After I used run command like this:

sudo docker run --rm -it -p 8000:8000 -v /home/komche/RD_stage:/home/komche/RD_stage theshadowx/qt_nacl:pepper47_qt56 bash -c "cd /home/komche/RD_stage/build && /opt/QtNaCl_56/qtbase/bin/nacldeployqt RD-Artem.nexe --run"

Using Chrome (version 56.0.2924.87 (64-bit)) I linked to http://172.17.0.1:8000/, but unfortunately I saw only white screen with frame and the name of the project((

So do I, and also was reported by some people here. I couldn't debug it as the debug option works just for Mac OS.

I think it's better to contact the person maintaining nacl-wip branch in Qt --> https://github.com/msorvig

Thank you very much for your support. I appreciate that.
Ok, I will try to contact with him, but Have you already contacted with him?

Yes, but not for this issue.
https://github.com/msorvig/qt5-qtbase-nacl/issues
The nacl-wip branch in Qt hasn't been updated since last year.

Hi Ali!

Did you read this article on official Google web-site:

https://developer.chrome.com/native-client/migration

@kom1che thanks for this info.
hope Qt guys will make Qt able to work with WebAssembly.

Here is one more article I've found:
https://qtandeverything.blogspot.com/2017/06/qt-for-web-assembly.html?showComment=1497088985199

Thanks, that's great !!!

@kom1che here is porting webassembly to qt https://github.com/msorvig/qt-webassembly-examples