Qt5_DIR-NOTFOUND

[Flaviu 0]

I am trying to compile a github project for Qt, using CMake. Here is the settings:


But I cannot setup a correct QT path: Qt5_DIR-NOTFOUND

Here is the outcome message:

CMake Error at CMakeLists.txt:32 (find_package):
  By not providing "FindQt5.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5" with any of
  the following names:

    Qt5Config.cmake
    qt5-config.cmake

  Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH or set "Qt5_DIR"
  to a directory containing one of the above files.  If "Qt5" provides a
  separate development package or SDK, be sure it has been installed.

I even setup Qt in PATH:

I always got Qt5_DIR-NOTFOUND as feedback. What should I do in order to overcome this error ?

[SGaist]

Hi,

The PATH environment variable won't help there.

@Flaviu-0 said in Qt5_DIR-NOTFOUND:

Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH

Define it to point to your Qt 5 installation as suggested when calling cmake.

Or if you also have Qt Creator, just build it using it.

[Flaviu 0]

@SGaist
Yes, I have used Qt Creator to compile with CMake, specifically, I have loaded CMakeLists.tzt into Qt Creator, but there I have another troubles:

Run Build Command(s):C:/Project/ninja-win/ninja.exe cmTC_df434 && [1/2] Building C object CMakeFiles\cmTC_df434.dir\testCCompiler.c.obj
    [2/2] Linking C executable cmTC_df434.exe
    FAILED: cmTC_df434.exe 
    cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --intdir=CMakeFiles\cmTC_df434.dir --rc=rc --mt=CMAKE_MT-NOTFOUND --manifests  -- C:\PROGRA~2\MICROS~1.0\VC\bin\X86_AM~1\link.exe /nologo CMakeFiles\cmTC_df434.dir\testCCompiler.c.obj  /out:cmTC_df434.exe /implib:cmTC_df434.lib /pdb:cmTC_df434.pdb /version:0.0 /machine:x64  /debug /INCREMENTAL /subsystem:console  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && cd ."
    RC Pass 1: command "rc /fo CMakeFiles\cmTC_df434.dir/manifest.res CMakeFiles\cmTC_df434.dir/manifest.rc" failed (exit code 0) with the following output:
    The system cannot find the file specified
    ninja: build stopped: subcommand failed.

I guess the CMake way it is the easy one.

[SGaist]

Your build started correctly.

Qt Creator uses cmake since it's a cmake project. The main difference is that the paths for Qt are pre-configured so you do not have to worry about that.

What is failing here is the rc call. How does your CMakeFile.txt look like ?

[Flaviu 0]

@SGaist

In fact, is about this CMakeLists.txt: https://github.com/cnr-isti-vclab/meshlab/blob/master/src/CMakeLists.txt

[Flaviu 0]

Any hint will be very helpful to me.

[SGaist]

It's the rc part that fails. Did you a fresh build from start ?

[Flaviu 0]

@SGaist Thank you a lot. I have succeeded into compiling that project, using CMake and VS2017.

[SGaist]

You're welcome !

What did you do to succeed ?

[Flaviu 0]

I have generated VS2017 solution file using CMake, but I get out Qt option, so I am not using Qt right now, just VS2017. Now, I can compile, run and debug reliable this project. Thank you a lot for your support.

[Flaviu 0]

And another information for those who have the same issue, I noticed that CMake chooses Qt5_DIR with this values:

C:/Qt/Qt5.12.10/5.12.10/msvc2017_64/lib/cmake/Qt5

Hope it helps.