Unable to debug in QtCreator on Debian 12.

[mrdebug]

Hi. When I try to run in debug mode an application, the application does not appear.
In the console I read:

SOFT ASSERT [16:51:48.244]: "rp.attachPID.isValid() && (rp.startMode == AttachToRemoteProcess || rp.startMode == AttachToLocalProcess || rp.startMode == AttachToRemoteServer)" in /home/qt/work/build/qt-creator/src/plugins/debugger/lldb/lldbengine.cpp:289
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\nModuleNotFoundError: No module named 'lldb.embedded_interpreter'\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\nNameError: name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n"
LLDB STDERR UNEXPECTED:  "  File \"<string>\", line 1, in <module>\n"
LLDB STDERR UNEXPECTED:  "NameError: name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\n"
LLDB STDERR UNEXPECTED:  "NameError: name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n"
LLDB STDERR UNEXPECTED:  "  File \"<string>\", line 1, in <module>\nNameError: "
LLDB STDERR UNEXPECTED:  "name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n"
LLDB STDERR UNEXPECTED:  "  File \"<string>\", line 1, in <module>\nNameError: "
LLDB STDERR UNEXPECTED:  "name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n"
LLDB STDERR UNEXPECTED:  "  File \"<string>\", line 1, in <module>\nNameError"
LLDB STDERR UNEXPECTED:  ": name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "error: python failed attempting to evaluate 'sys.path.insert(1, '/opt/Qt/Tools/QtCreator/share/qtcreator/debugger')'\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\nNameError: name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "error: python failed attempting to evaluate 'from lldbbridge import *'\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\nNameError: name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "error: python failed attempting to evaluate 'theDumper.loadDumpers({\"token\":1})'\n"
LLDB STDERR UNEXPECTED:  "Traceback (most recent call last):\n  File \"<string>\", line 1, in <module>\nNameError: "
LLDB STDERR UNEXPECTED:  "name 'run_one_line' is not defined"
LLDB STDERR UNEXPECTED:  "\n"
LLDB STDERR UNEXPECTED:  "error: "
LLDB STDERR UNEXPECTED:  "python failed attempting to evaluate 'theDumper.setupInferior({\"attachpid\":0,\"breakonmain\":0,\"environment\":[\"434f4c4f52464742473d31353b30\"

[SGaist]

Hi,

Based on the error message, do you have clang installed ?

Also, how did you install Qt Creator ?

[mrdebug]

@SGaist No, I hadn't but after having installed it still does not work.
lldb works as command line but not in QtCreator.

[JoeCFD]

@mrdebug then compare the differences between the build commands in qtcreator and from command line. Also check the settings of ENV variables in qtcreator.

run the Makefile created from qtcreator from command line.

[SGaist]

@mrdebug are you running your own build of Qt Creator ?

[mrdebug]

@SGaist No, I'm using the original qt creator, latest version.

[cristian-adam]

I would say that lldb is not build with python support.

See https://bugzilla.redhat.com/show_bug.cgi?id=1417371 for something similar. The solution there I think was to install python-lldb.

It looks Debian 12 also has such a package. Try to install it and maybe it just works.

[mrdebug]

@cristian-adam Thank you for the suggestion. I already have the package python3-lldb-14 installed. I added the package python3-lldb but still does not work.

[cristian-adam]

Looks like you'll have to do some symlinking to get things up and running. See https://github.com/llvm/llvm-project/issues/55575