How to make app bundle for macOS with OpenCV?

[jsulm]

@NintyS said in How to make app bundle for macOS with OpenCV?:

I know how to fix it in Qt Creator

How did you fix it in QtCreator?

[NintyS]

I add to Build Environment PKG_CONFIG_PATH and modify PATH. ( I couldn't post it earlier because I don't have 1 point of reputation and I must wait every time 10 minutes ).

[jsulm]

@NintyS You can do exactly the same in the terminal, like:

export PKG_CONFIG_PATH=SOME_PATH

[NintyS]

Ok it works, but what about error with make clean? "qmake -config release" and "make" works but what with "make clean"? This commands is necessary? ( I will be asking about whole way of creating app bundle, because this isn't clear to me ).

[jsulm]

@NintyS If there is nothing to clean "make clean" will fail. It should work after make. "make clean" is used to delete build artefacts, for example if you want to rebuild completely.

[NintyS]

Here ( in tutorial ) is a "plugins" folder and I know I must create this directory myself, but this folder will be empty and in this tutorial is that I must use "make clean", "qmake -config release" and "make" so what I supposed to do? ( Can you give me a one point of reputation to I could send you reply faster? )

[jsulm]

@NintyS said in How to make app bundle for macOS with OpenCV?:

I know I must create this directory myself

According to the documentation this is not correct.
"When we built the Plug & Paint plugins, based on the DESTDIR variable in their .pro file, the plugins' .dylib files are in the plugins subdirectory under the plugandpaint directory. We just have to move this directory to the correct location."
https://doc.qt.io/qt-5.9/osx-deployment.html

[NintyS]

@jsulm said in How to make app bundle for macOS with OpenCV?:

According to the documentation this is not correct.
"When we built the Plug & Paint plugins, based on the DESTDIR variable in their .pro file, the plugins' .dylib files are in the plugins subdirectory under the plugandpaint directory. We just have to move this directory to the correct location."

Then how to create a plugin folder? There we go to folder with app "cd /path/to/Qt/examples/widgets/tools/plugandpaint/app" and this create new file .app "make clean && qmake -config release && make" so where is command for plugins folder?

[jsulm]

@NintyS This is stated in the link:
"This builds the core application. Use the following to build the plugins:"

cd ../plugandpaint/plugins
make clean
qmake -config release
make

[NintyS]

This don’t make any sense for me. Why I must go intro plugins directory if this directory don’t exist? Command „cd” set user position intro this directory.

[jsulm]

@NintyS There IS plugins directory inside the plugandpaint app. It should look like this:

app
plugins
plugandpaint.pro

This is what you have to do:

cd /path/to/Qt/examples/widgets/tools/plugandpaint/app

// Run qmake to create a new makefile for the application, and do a clean build to create the dynamically linked executable:

make clean
qmake -config release
make

// This builds the core application.
// Use the following to build the plugins:

cd ../plugandpaint/plugins
make clean
qmake -config release
make

[NintyS]

Do you want a screenshot?

[jsulm]

@NintyS Yes, pleas.
How did you install Qt? And did you install the examples?

[NintyS]

Yes, I install qt and examples but I don't do this on the example, just on my own project. There is screenshots.

[jsulm]

@NintyS Well, in that case I guess you do not have any own plug-ins, so simply skip that step.

[NintyS]

Oooo. Ok.

[NintyS]

Now I have another error: "/Applications/Mobile/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/objdump: error: 'QtGui.framework/QtGui': No such file or directory"

Why otool search framework there but not in Qt/version/clang/bin?

[jsulm]

@NintyS Sorry, I'm not Mac user. From here somebody else should help you. @SGaist do you have an idea?

[kelly 219design.com]

I would also welcome anything SGaist says (it's always useful, as are the words of jsulm).

My expertise is primarily Linux, but with a healthy dose of Mac development (and Qt ios) as well.

I'm afraid I don't have a direct answer to the objdump error and I don't recall ever encountering that myself.

I'm going to just "throw a bunch of statements at the wall" and maybe some of this will resonate. I do apologize if this ends up being unhelpful noise.

Earlier this year I took a Linux-only qmake project and "ported it" to work on Mac OS 10.15 Catalina.

Here is the entirety of the changes that were required (you'll see it wasn't much):
https://github.com/219-design/qt-qml-project-template-with-ci/pull/26/files

I certainly do recognize, however, that incorporating OpenCV adds a layer of complexity that my template project does not contain.

I'm also using Qt 5.15 (not 5.9), and that could definitely result in different outcomes.

One thing that jumped out at me just now in my "port to Mac" diff is that I am using the -libpath argument to macdeployqt, so you could check whether any extra arguments are needed in your invocation of macdeployqt

I suppose another thing to double-check is that the qmake binary and macdeployqt binary being used are the ones you expect. (As in: it is possible to have multiple versions of Qt installed on a system, and it is possible to accidentally be calling upon qmake from one Qt version instead of the other.)

It seemed problematic to me that you would not see a "app.app/Contents/PlugIns/" folder being created for you. However, I just examined my own CI logs (they are public -- you can look, too), and I see only these plugins mentioned in the logs:

2020-09-12T01:19:21.6364660Z + [[ darwin19 == \d\a\r\w\i\n* ]]
2020-09-12T01:19:21.6365180Z + pushd build/src/app
2020-09-12T01:19:21.6368320Z + macdeployqt app.app -no-strip -libpath=/Users/runner/work/qt-qml-project-template-with-ci/qt-qml-project-template-with-ci/build/src/app -qmldir=../../../src/
2020-09-12T01:19:32.0684960Z File exists, skip copy: "app.app/Contents/PlugIns/quick/libqtquickcontrols2fusionstyleplugin.dylib"
2020-09-12T01:19:32.0883740Z File exists, skip copy: "app.app/Contents/PlugIns/quick/libqtquickcontrols2imaginestyleplugin.dylib"
2020-09-12T01:19:32.1087020Z File exists, skip copy: "app.app/Contents/PlugIns/quick/libqtquickcontrols2materialstyleplugin.dylib"
2020-09-12T01:19:32.1291070Z File exists, skip copy: "app.app/Contents/PlugIns/quick/libqtquickcontrols2universalstyleplugin.dylib"

Those plugins all look QtQuick-related. So I guess if I were to stop using QtQuick I might also have zero plugins.

(GitHub doesn't seem to support permalinking to the raw log. To see the log, go to https://github.com/219-design/qt-qml-project-template-with-ci/runs/1104573793?check_suite_focus=true then click the ". . ." hamburger button and choose "View raw logs".)

Again, my apologies if none of this turns out to be relevant.

If you have a min-repro that you can post somewhere (github, pastebin, here), then I could try it on mac using Qt 5.15 and see if I can reproduce the issue.

[SGaist]

Hi,

Beside the points made by @kelly-219design-com, you might be over-complicating things. The guide, while working correctly, dates back prior to Qt Creator. So you can simplify your like with it.

If you already have a working application bundle built using Qt Creator in release mode, then start from that one to make your deployment.

If there are issues, use the verbose mode of macdeployqt to see exactly where the issues are.