waf install recompiles another 4k files after waf build built its own 4k?

[Michael Tokarev]

30.03.2022 21:22, Michael Tokarev via samba-technical пишет:
> Hi!
> 
> Here's one more issue with the build process of 4.16.
> The context is - I'm packaging 4.16 for Debian.
> We fixed the missing PYTHONHASHSEED=1 for waf already,
> but it didn't help with the recompilation.
> 
> I noticed that `waf install' compiles a whole lot of files
> after `waf build' finished already. Most of them are recompiled, -
> for example, the dynconfig.c file (it is the first such
> file), and many other files from all over the places.
> I can't say they _all_ are recompiles or not, maybe some
> of them are new.
> 
> Some of the linking calls definitely are new, for these 3:
> 
>   Linking bin/default/third_party/heimdal_build/compile_et.inst
>   Linking bin/default/third_party/heimdal_build/asn1_compile.inst
>   Linking bin/default/lib/replace/libreplace-samba4.inst.so
> 
> (these are linked at the install time _only_).
> 
> Why the build system might decide it needs to recompile right
> to everything during the install stage?
> 
> The 2 waf invocations (for build & install) are the same.

This is not true. `waf build' is run as a regular user, while
`waf install' is run as root, - that's the only notable difference.
The environment is the same.  Might this be the issue?

/mjt