None.
Names an alternative configuration file or stanza for the compiler.
>>- -F--+-file_path--+-----------+-+--------------------------->< | '-:--stanza-' | '-:--stanza----------------'
By default, the compiler uses the configuration file that is supplied at installation time, and uses the stanza defined in that file for the invocation command currently being used.
Note that any file names or stanzas that you specify with the -F option override the defaults specified in the system configuration file. If you have specified a custom configuration file with the XLC_USR_CONFIG environment variable, that file is processed before the one specified by the -F option.
The -B, -t, and -W options override the -F option.
None.
xlc myprogram.c -F:debug
xlc myprogram.c -F/usr/tmp/myconfig.cfg
xlc myprogram.c -F/usr/tmp/myconfig.cfg:c99