LINK : warning LNK4315: /DEBUG:FASTLINK is no longer supported

Development
1

The warning

LINK : warning LNK4315: /DEBUG:FASTLINK is no longer supported. Using /DEBUG:FULL instead.

appears several times while building. Is this something I need to worry about? The build finishes, and soffice.exe works.

2

hi Regina,

i found this commit by @mikekaganski and wonder if it makes the problem go away:
https://gerrit.collaboraoffice.com/c/online/+/7223

3

No. My clone was from 2026-07-22 and thus has that patch already integrated.

4

Likely that my change was exactly the reason why it started to appear - before, it removed all occurrences of that warning, and now it avoided the cause why they were emitted - in one case. Obviously there are others. The warnings are harmless, but knowing what emits them would be nice to add another change that would avoid emitting them where they are, too.

5

I have made a clean make with log. The log shows 290 such warnings.
logmake20260724.txt (1.1 MB)
Perhaps the log helps you to identify the places?
I build with VS 2026, version 18.6.2.

6

Thanks @Regina!

It turned out, that I used 2022 toolset for building, even though I use VS2026 IDE - that’s why I haven’t seen that. Or maybe I used lld-link.

https://gerrit.collaboraoffice.com/c/online/+/7818 will hopefully address that. When we end support for VS2022, we can simplify it further by removing the whole FASTLINK machinery.