Use the fdumpmod(1) command to display information about the contents of a compiled module information file.
demo% fdumpmod x.mod group.mod x 1.0 v8,i4,r4,d8,n16,a4 x.mod group 1.0 v8,i4,r4,d8,n16,a4 group.mod
The fdumpmod command will display information about modules in a single .mod file, files formed by concatenating .mod files, and in .a archives of .mod files. The display includes the name of the module, a version number, the target architecture, and flags indicating compilation options with which the module is compatible. See the fdumpmod(1) man page for details.