Which is the last commit before C++17 support became a requirement?

[samfux84]

Issue Prelude

Please complete these steps and check these boxes (by putting an x inside the brackets) before filing your issue:

• [x] I have read and understood YCM's [CONTRIBUTING][cont] document.
• [x] I have read and understood YCM's [CODE_OF_CONDUCT][code] document.
• [x] I have read and understood YCM's [README][readme], especially the [Frequently Asked Questions][faq] section.
• [x] I have searched YCM's issue tracker to find issues similar to the one I'm about to report and couldn't find an answer to my problem. ([Example Google search.][search])
• [ ] If filing a bug report, I have included the output of vim --version.
• [ ] If filing a bug report, I have included the output of :YcmDebugInfo.
• [ ] If filing a bug report, I have attached the contents of the logfiles using the :YcmToggleLogs command.
• [ ] If filing a bug report, I have included which OS (including specific OS version) I am using.
• [ ] If filing a bug report, I have included a minimal test case that reproduces my issue, using vim -Nu /path/to/YCM/vimrc_ycm_minimal, including what I expected to happen and what actually happened.
• [ ] If filing a installation failure report, I have included the entire output of install.py (or cmake/make/ninja) including its invocation
• [x] I understand this is an open-source project staffed by volunteers and that any help I receive is a selfless, heartfelt gift of their free time. I know I am not entitled to anything and will be polite and courteous.
• [x] I understand my issue may be closed if it becomes obvious I didn't actually perform all of these steps.

Thank you for adhering to this process! It ensures your issue is resolved quickly and that neither your nor our time is needlessly wasted.

Issue Details

On our HPC cluster, we feature multiple toolchains (GCC 4.8.5, 6.3.0, 8.2.0) mapped to C++ standards (11, 14, 17). I got a request from a cluster users to install the requirements needed for YouCompleteMe. This users and his institute are heavily using the GCC 6.3.0 toolchain and have all their software setup for this particular toolchain.

I would like to prevent that the users have to install all their software for GCC 8.2.0 (this will happen, but rather in the future). I thought that looking for an older version of YouCompleteMe that is only requiring C++14 support would solve this conflict.

When looking at the YouCompleteMe github repository, I noticed that this software does not have a versioning beyond git commits (no releases, no tags). How can I find out which is the last commit, before the code was changed according to the C++17 standard?

Any help is appreciated. Thank you in advance

Sam

[puremourning]

I have pushed a branch legacy-c++11 to the main repo, which can be checked out:

• cd /path/to/YouCompleteMe
• git fetch origin
• git checkout legacy-c++11
• git submodule update --init --recursive
• ./install.py .... usual arguments...

For people using plugin managers, see your plugin manager documentation for how to set a branch to checkout.

Let me know if that works for you and I'll drop a note in the readme.

ta Ben

[samfux84]

@puremourning Thank you for your fast answer and for pushing a legacy branch of YouCompleteMe. This should resolve the issue. Today I am fully booked with appointments, but tomorrow I will try to compile the software myself and then provide you some feedback if it worked. Again, thank you for your help.

[samfux84]

Compiling with GCC 6.3.0 worked perfectly fine. Thank you again for your help