# AUTORCC
**URL:** https://discourse.cmake.org/t/autorcc/2179
**Category:** Usage
**Created:** [November 16, 2020, 12:28pm UTC](https://discourse.cmake.org/t/autorcc/2179 "2020-11-16T12:28:04Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Smirnov\_Kirill\_Contr](https://discourse.cmake.org/u/Smirnov_Kirill_Contr)
#### Post date: [November 16, 2020, 12:28pm UTC](https://discourse.cmake.org/t/autorcc/2179/1 "2020-11-16T12:28:04Z")
Hello
There is a project on Qt5.6.2 / CMake
With CMake 3.9.2 on windows and CMake 3.10.2 on Linux project builds with no problem
Automatic MOC, UIC and RCC for target SomeLibrary
When CMake was updated to 3.18.4 (on Windows) build started failing
Automatic MOC and UIC for target SomeLibrary
Apparently RCC never was called for SomeLibrary with new CMake
Why could that happen?
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### Author:  [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [November 16, 2020, 3:34pm UTC](https://discourse.cmake.org/t/autorcc/2179/2 "2020-11-16T15:34:40Z")
I believe the autogen mechanism only reports for tools that it finds are necessary for a build. So without a `.qrc` file in `SomeLibrary`'s sources, it doesn’t mention that it is doing so. Is there a `.qrc` file in the source list for it?
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### Author:  [@Smirnov\_Kirill\_Contr](https://discourse.cmake.org/u/Smirnov_Kirill_Contr)
#### Post date: [November 17, 2020, 6:25am UTC](https://discourse.cmake.org/t/autorcc/2179/3 "2020-11-17T06:25:22Z")
Yes, surely qrc files are passed as a sources and they are processed with autorcc on CMake 3.9.2
But when I try same project with CMake 3.18.4 autorcc doesn’t work for some reason
I wonder could older Qt version (5.6.2) be the issue here?
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### Author:  [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [November 17, 2020, 1:11pm UTC](https://discourse.cmake.org/t/autorcc/2179/4 "2020-11-17T13:11:02Z")
That sounds like a regression to me. Please file an issue with a test case that reproduces the issue (a link to the full project would be sufficient if it is available, but stripping it down to the bare minimum would help a lot in focusing in on the problem.
Heads up @brad.king
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### Author:  [@Smirnov\_Kirill\_Contr](https://discourse.cmake.org/u/Smirnov_Kirill_Contr)
#### Post date: [November 18, 2020, 2:33pm UTC](https://discourse.cmake.org/t/autorcc/2179/5 "2020-11-18T14:33:05Z")
Finally I was able to isolate(not solve) the problem: it happens when We are trying to use specific AUTOGEN\_BUILD\_DIR
In the attachment there is simple recreation of a problem
Only update CMakeLists.txt with proper PROJECTS\_ROOT variable
PS. Qt version has nothing to do with the problem
PPS. QtCreator(4.13+) although has some issues with CMake versions older then 3.14 (more info here: [https://www.qt.io/blog/qt-creator-4.13-released](https://www.qt.io/blog/qt-creator-4.13-released))
[autorcctest.7z](https://discourse.cmake.org/uploads/short-url/aQUXxnhZe6xhfLaWfVLlfuC4uDr.7z) (3.6 KB)
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### Author:  [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [November 18, 2020, 4:26pm UTC](https://discourse.cmake.org/t/autorcc/2179/6 "2020-11-18T16:26:06Z")
Thanks. I’ve filed it as [https://gitlab.kitware.com/cmake/cmake/-/issues/21455](https://gitlab.kitware.com/cmake/cmake/-/issues/21455)