Pass the suboption list ls to the compilation phase pr.
There must be blanks separating Qoption, pr, and ls. The Q can be uppercase or lowercase. The list is a comma–delimited list of suboptions, with no blanks within the list. Each suboption must be appropriate for that program phase, and can begin with a minus sign.
This option is provided primarily for debugging the internals of the compiler by support staff. Use the LD_OPTIONS environment variable to pass options to the linker. See the chapter on linking and libraries in the Fortran Programming Guide.