[Scons-users] Rebuild issue with CheckLib()?

[Bill Deegan]

Which version of python?
Which version of SCons?

On Wed, Apr 28, 2021 at 1:00 AM Herzog, Tobias (G3-29) <
tobias.herzog at carmeq.com> wrote:

> Hi SCons-Users,
>
> I discovered an issue (?) with missing rebuilds. It seems that rebuilds
> are not triggered, if the presence of an external lib is tested with the
> CheckLib Method.
>
> I am using an SConstruct with the following content:
>
> env = Environment(LIBPATH=['#mylib'])
>
> conf = Configure(env)
> if not conf.CheckLib('gtestd'):
>     print('Error')
>     Exit(1)
> conf.Finish()
>
> env.Append(LIBS=['gtestd'])
> env.Program('test.cpp')
>
> If you modify "mylib/gtestd.lib" (I am using MSVC compiler on Windows), no
> rebuild is triggered ("scons: `.' is up to date."). However the
> dependencies are detected correctly ("scons --tree=all"). Even with
> "-config=force" no rebuild is triggered. If I leave out the Configure
> section it works like expected.
>
> Is this a bug or a feature? Maybe this is not a common use case, but I
> would expect a rebuild here.
>
> Thanks,
> Tobias
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