Debug flags

[guolinke]

for #2820 and #1588

• add documents

[jameslamb]

Looks ok to me! But I don't understand LightGBM.vcxproj so won't let my approval count towards a merge.

@guolinke I think we should document this somewhere for developers too. Otherwise it will be an undocumented "hidden treasure" 😂

[guolinke]

thanks @jameslamb , will add related documentation when have time.

[StrikerRUS]

@guolinke I can help with docs if you wish.

[guolinke]

@StrikerRUS Thank you so much! And it would be better!

[StrikerRUS]

@guolinke WDYT about compiling LightGBM in debug mode to check that everithing is OK at CI?
For example, we can set debug here, because we cannot set it for regular job as we use artifacts from there in releases.

LightGBM/.ci/test.sh

Line 141 in 53137e2

cmake -DUSE_MPI=ON ..

[guolinke]

Good idea!

[StrikerRUS]

I added docs for new compilation options and set MPI job to be run in Debug mode in the latest commits.