Dear all, 

this posting results from the Fermilab move to a new packaging/build system called spack 
which doesn't allow to use the MIDAS install procedure described at

https://daq00.triumf.ca/MidasWiki/index.php/Quickstart_Linux#MIDAS_Package_Installation

as is. Spack specifics aside, building MIDAS under spack took  
a) adding cmake install for three directories: drivers, resources, and python/midas, 
b) adding one more include file - include/tinyexpr.h - to the list of includes installed by cmake.

With those changes I was able to point MIDASSYS to the spack install area and successfully run mhttpd, 
build experiment-specific C++ frontends and drivers, use experiment-specific python frontends etc. 
I'm not using anything from MIDAS submodules though.

I'm wondering what the experts would think about accepting the changes above to the main tree. 

Installation procedures and changed to cmake files are always a sensitive area with a lot of boundary 
constraints coming from the existing use patterns, and even a minor change could have unexpected consequences
So I wouldn't be surprised if the fairly minor changes outlined above had side effects.

The patch file is attached for consideration.

-- regards, Pasha