z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

xlc and xlC
principle, as both can be specified using -q syntax. However, -qobjmodel and
-qphsinfo should be used instead to enhance portability with AIX.
Options that do not exist on AIX, and are not required to accomplish a z/OS-specific
task, and their effect can be accomplished by other means, are not supported with
-q syntax. For example, use -D instead of DEFINE, -U instead of UNDEFINE, and
-co instead of OBJECT.
Suboptions with negative forms of -q options are not supported, unless they cause
an active compiler action, as in the case of -qnokeyword=.
Compiler options for AIX that do not apply to z/OS are accepted and ignored with a
diagnostic message. For a brief description of the compiler options that can be
specified with xlc, type xlc or any other supported command name. For detailed
descriptions of the compiler options that can be specified with xlc, refer to z/OS XL
C/C++ User’s Guide.
The following syntax diagram shows how to specify keyword options using -q
syntax:
►►
-q
option_keyword
=
:
▼ suboption
In the diagram, option_keyword is an option name and the optional suboption is a
value associated with the option. Keyword options with no suboptions represent
switches that may be either on or off. The option_keyword by itself turns the switch
on, and the option_keyword preceded by the letters NO turns the switch off. For
example, -qLIST tells the compiler to produce a listing and -qNOLIST tells the
compiler not to produce a listing. If an option that represents a switch is set more
than once, the compiler uses the last setting.
Some keyword options only have values. Keywords which have values are specified
as keyword=value pairs.
Example:
-qfloat=ieee
where ieee is a value.
Some keyword options have suboptions, which in turn have values. Suboptions
which have values are specified as suboption=value pairs.
Example:
-qipa=level=2
where level is a suboption and 2 is a value.
Keyword options and suboptions may appear in mixed case letters in the command
that invokes the xlc utility. Keyword options that have suboptions can also be
preceded by the letters NO in which case they are similar to off switches and do not
allow suboptions. This is a noticeable departure from the z/OS options, which allow
suboptions even if they are preceded by the letters NO. However, the function that
the z/OS behavior provides can easily be emulated by specifying all desired
808 z/OS V1R9.0 UNIX System Services Command Reference
►◄