Delete unused files

[vkucera]

There are quite a few files which appear to be unused (i.e. neither included nor compiled).
Please check whether any of them are used outside the repository or should be kept for other reasons.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
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The following labels are available
async-2023-pbpb-apass4
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[alibuild]

Error while checking build/O2/fullCI_slc9 for 748fad9 at 2026-01-20 11:50:

## sw/BUILD/O2-latest/log
ninja: error: '/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUTracking/Base/hip/GPUReconstructionHIPIncludesSystem.h', needed by 'GPU/GPUTracking/Base/hip/hipify/GPUReconstructionHIPIncludesSystem.h', missing and no known rule to make it

Full log here.

[iarsene]

Since the FOCAL part in O2 is under construction, I suggest to not remove anything please.

[vkucera]

Recovered

[lmassacr]

Hi @vkucera,

Some of the MID code proposed to be suppressed in this PR has been used for analyses on some tests bench. If there is no necessity to remove the code, I would prefer that we keep it. @dstocco can you confirm what needs to be kept for MID?

I am also checking for the MCH files with @aferrero2707 @pillot and other muon experts, please do not go ahead with removing code before our feedbacks.

Thanks,
Cheers,
Laure

[dstocco]

In the past we were indeed using the MID decoded-data-dump-workflow. However, looking now at this PR, I realise that the code is not in a CMakeLists.txt, so indeed it does not seem to be compiled.
It might be a leftover from some local development branch. This being the case, contrary to what I told to Laure, it is ok to delete the proposed file for MID.

[f3sch]

@vkucera please remove the changes to any ITS2&3 code. In the former case, I will open a PR soon where this is anyways done, in the latter its plainly wrong that the digit reader/writer is not built, will fix soon.

[vkucera]

@vkucera please remove the changes to any ITS2&3 code. In the former case, I will open a PR soon where this is anyways done, in the latter its plainly wrong that the digit reader/writer is not built, will fix soon.

Recovered

[alibuild]

Error while checking build/O2/fullCI_slc9 for 3cbb2f9 at 2026-01-21 22:50:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUbenchmark/cuda/../Shared/Kernels.h:18:10: fatal error: Utils.h: No such file or directory
/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUbenchmark/cuda/../Shared/Kernels.h:18:10: fatal error: Utils.h: No such file or directory
/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUbenchmark/hip/../Shared/Kernels.h:18:10: fatal error: 'Utils.h' file not found
/sw/SOURCES/O2/14973-slc9_x86-64/0/GPU/GPUbenchmark/hip/../Shared/Kernels.h:18:10: fatal error: 'Utils.h' file not found
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 98c6c83 at 2026-01-22 06:08:

## sw/BUILD/O2-latest/log
CMake Error at /sw/slc9_x86-64/ROOT/v6-36-04-alice9-2/cmake/RootMacros.cmake:454 (message):

Full log here.

[davidrohr]

Hi @vkucera : Thx for the effort. From the GPU folder, please delete only makefile_opencl_compiler.cxx, opencl_compiler_structs.h, opencl_obtain_program.h. and GPUTPCDefinitions.h.

All the other files in the GPU folder are needed in certain build cases, or for manual QA / tests.

In general, I am not sure if we really need to do such a cleanup. Also other people / projects might have files for manual tests in here, so I would wait for feedback before merging, and I would send a mail to o2-wp-all and to the detectors, to double-check.

[ktf]

How about you do smaller PRs with this, targeting one or two files? It should make it easier to review / approve.

[vkucera]

Hi @vkucera : Thx for the effort. From the GPU folder, please delete only makefile_opencl_compiler.cxx, opencl_compiler_structs.h, opencl_obtain_program.h. and GPUTPCDefinitions.h.

All the other files in the GPU folder are needed in certain build cases, or for manual QA / tests.

In general, I am not sure if we really need to do such a cleanup. Also other people / projects might have files for manual tests in here, so I would wait for feedback before merging, and I would send a mail to o2-wp-all and to the detectors, to double-check.

Hi @davidrohr , thanks for checking. I will make a separate PR.

[vkucera]

How about you do smaller PRs with this, targeting one or two files? It should make it easier to review / approve.

I can split it by first-level directory.