[R-pkg-devel] fatal error: 'ilcplex/ilocplex.h' file not found

Hey,

I am trying to submit an R package to CRAN but it shows this particular
error fatal error: 'ilcplex/ilocplex.h' file not found, when I run R CMD
check --as-cran.
I am using this particular library in my package but I am not able to
figure out how to resolve it. I have also attached a file that describes my
error. Please look into it and let me know.

Thanks.