Source Paths Mapping does not work in Ubuntu (works in Windows)

[dave2]

Summary: with Qt Creator, I can debug Qt code in Windows, not in Ubuntu.

My Windows environment:

• Windows 10 (64-bit)
• Qt 5.6.3
• Qt Creator 4.8.1
• Visual Studio 2015, Update 3

My Ubuntu environment:

• Ubuntu 18.04 (64-bit)
• Qt 5.6.3
• Qt Creator 4.8.1
• gcc 7.3.0

This is how I installed Qt in Windows:

• dowload qt-unified-windows-x86-3.0.6-online.exe from https://www.qt.io/download
• execute qt-unified-windows-x86-3.0.6-online.exe
  • installation folder => C:\Qt
  • selected components:
    • Qt 5.6.3
      • msvc2015 64-bit
      • Source Components
        • Qt Source Package
    • Tools
      • Qt Creator 4.8.1 CDB Debugger Support

This is how I installed Qt in Ubuntu:

• dowload qt-unified-linux-x64-3.0.6-online.run from https://www.qt.io/download
• execute qt-unified-linux-x64-3.0.6-online.run from a terminal
  • installation folder => /home/dave/Qt
  • selected components: same as in Windows, except:
    • msvc2015 64-bit => Desktop gcc 64-bit
    • no "Qt Creator 4.8.1 CDB Debugger Support" available
• execute these commands in a terminal (as per wiki.qt.io/Install_Qt_5_on_Ubuntu):
  $ sudo apt-get install libfontconfig1
  $ sudo apt-get install mesa-common-dev
  $ sudo apt-get install libglu1-mesa-dev -y

This is how I configured Qt Creator's source mapping in Windows:

• Tools -> Options... -> Debugger -> General -> Add Qt sources... -> C:\Qt\5.6.3\Src
• at this point, "Source Paths Mapping" in the "Debugger" dialog shows the following lines:

  Source path				Target path
  C:/work/build/qt5_workdir/w/s		C:\Qt\5.6.3\Src
  Q:/qt5_workdir/w/s			C:\Qt\5.6.3\Src
  c:/Users/qt/work/install		C:\Qt\5.6.3\Src
  c:/users/qt/work/qt			C:\Qt\5.6.3\Src

This is how I configured Qt Creator's source mapping in Ubuntu:

• Tools -> Options... -> Debugger -> General -> Add Qt sources... -> /home/dave/Qt/5.6.3/Src
• at this point, "Source Paths Mapping" in the "Debugger" dialog shows the following lines:

  Source path			Target path
  /home/qt/work/qt		/home/dave/Qt/5.6.3/Src

When I try to Step Into a Qt function call in Ubuntu, execution jumps over the Qt call, as if I had selected Step Over. When I do the same in Windows, the debugger takes me into the Qt function, as it should.

The only Qt code I can debug in Ubuntu is Qt code defined in headers.

I do use Debug builds in both Windows and Ubuntu.

Any idea?

[jsulm]

@dave2 said in Source Paths Mapping does not work in Ubuntu (works in Windows):

/home/qt/work/qt /home/dave/Qt/5.6.3/Src

is it really /home/qt? If so why? Does the user "dave" has read access to /home/qt?

[dave2]

When I add /home/dave/Qt/5.6.3/Src as the Target path (with Tools -> Options... -> Debugger -> General -> Add Qt sources...), the Source path is automatically set to /home/qt/work/qt. And no, /home/qt/work/qt does not exist on my Ubuntu machine.

Similarly, none of the four directories which were automatically added as Source path when I added C:\Qt\5.6.3\Src as the Target path (that is: C:/work/build/qt5_workdir/w/s, Q:/qt5_workdir/w/s, c:/Users/qt/work/install and c:/users/qt/work/qt) exists on my Windows machine.

I suppose that these source paths are directories in which the Qt versions I installed were built. The debugger then maps those directories to the directory where I have installed Qt. The mapping works in Windows, not in Ubuntu.