Compiling QT on ubuntu/ARM for WASM
-
I am trying to compile QT for Webassembly. I cloned the QT source code from code.qt.io/qt/qt5.git and checked out version 5.15. I am using emcc/em++ version 2.0.13 with clang version 13.0.0.
In build directory I ran configure as follows:
../qt5/configure -opensource -confirm-license -xplatform wasm-emscripten -feature-thread -nomake examples -no-dbus -no-ssl -prefix $PWD/../qt5_wasm_binaries
followed by make.
There are two issues: One, I see a lot of files being compiled with gcc instead of emcc. Second the build fails with the error:make[3]: *** No rule to make target 'qt5widgets_metatypes.json', needed by '../../lib/libQt5Widgets.a'.
I feel I am missing some steps. Would be great to get some help on this.
Thanks
-
Hi and welcome to devnet,
By default when you clone the Qt repo, it's on the dev branch that means it's for Qt 6. Did you explicitly checkout Qt 5.15 ?
-
I am trying to compile QT for Webassembly. I cloned the QT source code from code.qt.io/qt/qt5.git and checked out version 5.15. I am using emcc/em++ version 2.0.13 with clang version 13.0.0.
In build directory I ran configure as follows:
../qt5/configure -opensource -confirm-license -xplatform wasm-emscripten -feature-thread -nomake examples -no-dbus -no-ssl -prefix $PWD/../qt5_wasm_binaries
followed by make.
There are two issues: One, I see a lot of files being compiled with gcc instead of emcc. Second the build fails with the error:make[3]: *** No rule to make target 'qt5widgets_metatypes.json', needed by '../../lib/libQt5Widgets.a'.
I feel I am missing some steps. Would be great to get some help on this.
Thanks
@dreamlax said in Compiling QT on ubuntu/ARM for WASM:
One, I see a lot of files being compiled with gcc instead of emcc.
this is ok, since the host binaries (moc, rcc, etc.) are compiled with gcc.
-
Emscripten does not run on native arm on any OS. On Mac M1, it requires the Rosetta 2 emulation to work.
"emsdk only officially supports x86_64 today."
https://github.com/emscripten-core/emsdk/issues/671
