Build configuration for activation of path effect Fillet/Chamfer

Hi there,

I would like to compile Inkscape in a way so that I can use the
Fillet/Chamfer path effect.

I got Inkscape compiled under a msys2 environment under windows 10
with the macro  WITH_MODULES enabled, but I still cannot find the path
effect in the list in the gui interface. As a codebase I use the
source code from the gitlab repo and the branch 0.92.x.

Am I missing something? I furthermore have not found the given macro
in the source code (only one #ifdef in inkview.cpp which seems
somewhat related). I would expect some constructs like:

#ifdef WITH_MODULES
/* some code */
#endif

Is this the correct macro to define for this use case? I am not
totally sure that I did the build configuration correctly.

It seems that the macro definition is supposed to more or less add
steps to the build configuration. Could you point me to the files
where this is done.

Best regards,
Johannes Madel