I'm compiling the same Qt/QML application on Windows, Linux, MacOS, WebAssembly, iOS, and Android. So far, I found that detection of Qt's components only works on Windows, regardless whether I'm using it to compile a Windows version or cross-compiling to Android. It doesn't work neither on MacOS nor on Linux. I tried pointing CMAKE_PREFIX_PATH to Qt's installation prefix (~/Qt/5.15.0/wasm_32/), but it keeps on complaining about QtConfig.cmake. The only alternative I found to work was passing -DQt5_DIR for QtConfig.cmake to be found, but then it would keep on asking for at least 10 more .cmake files which I need to pass their paths one by one using _DIR variables. This way I would always end with a huge command and it's a major source of annoyance. Note that I do not want to install Qt using apt or any other package manager. I only want to use Qt's installer since it gives me the flexibility of having multiple versions targeting multiple frameworks. Is it a problem in Qt? CMake? Ubuntu? Qt: 5.15.0 CMake: 3.18.0 Ubuntu: 20.04

I could solve the problem by adding this to the beginning of my CMake script: list(APPEND CMAKE_PREFIX_PATH "~/Qt/5.15.0/wasm_32") Neither passing it as a command-line parameter nor as an env variable worked. Now I'm sure that I found it: The toolchains had this: set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) It doesn't look like setting CMAKE_PREFIX_PATH was enough. I had to do this also: list(APPEND CMAKE_FIND_ROOT_PATH "~/Qt/5.15.0/wasm_32")

Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

CMAKE_PREFIX_PATH does not work as expected

Solved General and Desktop

21 Posts 3 Posters 20.8k Views 2 Watching

A Ahmed Yarub Hani Al Nuaimi

Can you try compiling for wasm32?
J Offline
J Offline
JoeCFD

wrote on last edited by

#21

@Ahmed-Yarub-Hani-Al-Nuaimi I only confirmed that Qt 5 can be found. If it can be found, you will be able to compile it.
1 Reply Last reply

0