Some options were removed from gawk package binaries between CentOS 6
and CentOS 7. This may break functionality of some of your scripts.
All option removals with solutions are listed bellow.

awk/gawk/pgawk: --compat - option was removed, alternative is
                  --traditional
                --copyleft - option was removed, alternative is
                  --copyright/-C
                --gen-po - option was replaced by --gen-pot option
                --usage
                -D - short form of --parsedebug was changed to -Y

Please check that your scripts are aware of these changes.