[Dune] Buidsystem question: make am--refresh behavior

[Dan Popovic IWR]

Dear dune,

from time to time, when I try to rebuild a folder in my dune application,
a 'make am--refresh' is called. This results in my applications checks not
invoked into the build process (NEURODUNE_CHECKS is m4require'd but not
defun'd):

dan at mp2:/home/dan/dune-2.0/neurodune/samples/passive$ make
cd ../.. && make  am--refresh
make[1]: Entering directory `/disk3/NeuroDune/dpopovic/dune-2.0/neurodune'
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/bash
/home/dpopovic/dune-2.0/neurodune/missing --run aclocal-1.11 -I . -I
/home/dpopovic/dune-2.0/dune-common-2.0/m4 -I
/home/dpopovic/dune-2.0/dune-grid-2.0/m4 -I
/home/dpopovic/dune-2.0/dune-istl-2.0/m4
configure.ac:10: warning: NEURODUNE_CHECKS is m4_require'd but not m4_defun'd

It is not clear to me when and why this happens. Is it my fault or
deterministic build system behavior? Thanks for an answer and please tell
me if I can supply additional information such as config.log. Have a nice
day!

Dan