Build issue

[trufanov-nok]

I wasn't able to build these sources on Linux with gcc and gfortran unless I replaced all shell echo "\#define with shell echo "#define. May be it's a bug?

The original error was:

config.h:2:1: error: stray ‘\’ in program
    2 | \#define USE_REGEX
      | ^

and

gfortran -c -O3 -fopenmp -fPIC -g -fdefault-real-8 -fdefault-double-8 polates1.f90
config.h:1:2:

    1 | \#define USE_SPECTRAL 1
      |  1
Error: Invalid character in name at (1)

[EWBr0wn]

FYI... Breaking change in GNU Make 4.3

Hope this helps you as it took me significant time to find this detail.