I've followed steps from this [guide] (https://xgitlab.cels.anl.gov/codes/codes/wikis/installation) and tutorial from here:

But when I try make, it gives an error:

  GEN      src/modelconfig/configlex.h
make  all-am
make[1]: Entering directory '/path/to/codes/build'
  GEN      src/modelconfig/configlex.c
  CC       src/modelconfig/configlex.lo
gcc: error: src/modelconfig/configlex.c: No such file or directory
gcc: fatal error: no input files
compilation terminated.
Makefile:2047: recipe for target 'src/modelconfig/configlex.lo' failed

I checked file tree and such is also absent there. How can I overcome it?