John,
What is '/prog' ?
It could be interpreted as /pr > /profile, which would dramatically change the size of the executable.
If you type
ftn95 /?
e.g. for ftn95 version 8.63 then options /PRofile , /PROGress_meter , /PROMote_long_ints are displayed (besides all the other options). The capitalized parts make the options unique (i.e. /PR is the same as /PRofile). You may see the options you would compile with by typing
ftn95 file.for <your options> /lis
and have a look in file file.lis having been generated as a result of the command. For example
ftn95 file.for /PR /lis
would generate file file.lis containing a section 'Compiler options in effect:' and in that section you will find the string 'PROFILE;'. Option /PR is only available if /64 is set. Moreover you also find information about the salflibc path and the salflibc version at the eginning of lis file fle.lis.
Unfortunately I could not find options /PRofile , /PROGress_meter if typing
ftn95 --help
and then having a look in
Compiler options - Quick referenc
Regards,
Dietmar