Build error, Qt 5.10, Windows
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Hi,
Take a look at the "Build and Run" panel of Qt Creator's preferences. You can find there your Kits, Qt Versions, Compilers etc.
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All of the build/run options seem correctly set.
BTW, I have experienced many prior errors with these settings. ALL prior errors have been of the ilk [compiler, make, qmake, etc] not found or specific errors reported from those tools. I have never seen a "could not start process" error.
If you refer to specific preferences that cause errors like the one I report, it would be more helpful to point specific to those sorts of preferences.
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@drmhkelley If you go to "Build & Run/Qt Versions" do you see any warnings/errors there? Is the path to qmake.exe set properly there?
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There are no errors there.
As mentioned in my original post, I can cut/paste the qmake command into a command window (with current directory properly set) and and run qmake. I can then cut/paste the configured make command to correctly make the app.
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Did you modify the PATH environment variable within Qt Creator ?
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Not sure what you mean. PATH seems to be correct in my Windows environment (i.e., everything works outside Qt Creator), but I don't recall seeing anywhere in Qt Creator's options where to set a different value for PATH.
Further, the error message appears to give verbatim the command for which a process cannot start - that command includes the full path for the failing command. It looks more like whatever mechanism, internal to Qt Creator for starting additional processes, is itself the problem.
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In the Project panel, you have there the environment setup for build time and run time.
A wild idea, did you try to nuke the .pro.user file and reconfigure your project anew ?
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I resolved this problem. Well, I resolved this particular instance of a larger and completely weird problem.
Turns out, Qt/Tools/QtCreator/bin was missing two files (don't ask how I eventually figured this out). qtcreator_ctrlc_stub.exe and Clangbackendipc4.dll were just not there - not a clue how/when they disappeared. Once I restored them, QtCreator seems to work correctly.
Full disclosure, I have experienced behavior like this before - enough that I now officially believe in gremlins. Occasional, important files (like g++.exe, make.exe, ar.exe, and others) just vanish. In the middle of a multi-step make process, g++.exe will just vanish., causing make to fail with a "cannot fine g++" error, after having already compiled a couple dozen files.
So the problem you tried to help me with will likely recur at some point, but at least I now have a better chance of tracking down this really bizarre failure.
Thanks.
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Glad you found out and thanks for sharing !
Do you have any anti-virus running on your system ?
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I do have anti-virus - up-to-date McAfee. Why do you ask? I (somewhat) regularly check the McAfee logs and never saw that it had quarantined any of the affected files.
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Because they sometimes just delete generated executable without any notifications.
