Print cause of rebuilt

[Martin_Santa_Maria]

Hello,

I have a fairly complicated project with lots of dependencies and custom targets and commands. I’m getting some rebuilds, and until now they have all been proven to be right after analysis; but it is never easy to confirm it, and we loose quite a time on checking them.
Is there a way to ask cmake to print the cause of rebuild? something like “rebuilding because dependency changed”?
I have checked the debug prints, but they are not that useful.
Regards,

[ben.boeckel (Ben Boeckel (Kitware))]

This is down to the build tool. ninja -d explain and make -d work (but are not necessarily trivial to extract information from). No idea if MSBuild or Xcode support such diagnostics or not.

[neundorf (Alex Neundorf)]

msbuild has -v:diag , this prints a lot, but it didn’r print what I wanted to see:

Visual Studio: Some files not recompiled - how to debug ?

Hi, in one of my projects it happens from time to time that when building with Visual Studio (not Code), I get linker errors, because some cpp files have not been recompiled. So it seems that after a header was edited, some cpp files were not recompiled, although they use that header indirectly. How are those dependencies handled in Visual Studio projects, where can I start looking ? Do you have suggestions how to debug this issue ? Thanks in advance

Maybe it works for you.