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

c89, cc, and c++
preprocessor. By default, all comments are removed by the preprocessor.
This option is ignored except when used with the -E option.
-c Specifies that only compilations and assemblies be done. Link-edit is not
done.
-D name[=value]
Defines a C or C++ macro for use in compilation. If only name is provided,
a value of 1 is used for the macro it specifies. For information about macros
that c89/cc/c++ automatically define, see Usage Note 5 on page 98. Also
see Usage Note 13 on page 100.
Note: The xlc utility has slightly different semantics for processing -D
options.
-E Specifies that output of the compiler preprocessor phase be copied to
stdout. Object files are not created, and no link-editing is performed.
-e function
Specifies the name of the function to be used as the entry point of the
program. This can be useful when creating a fetchable program, or a non–C
or non–C++ main, such as a COBOL program. Non–C++ linkage symbols
of up to 1024 characters in length may be specified. You can specify an
S-name by preceding the function name with double slash (//). (For more
information about S-names, see Usage Note 23 on page 103.)
Specify a null S-name (″-e //″) so that no function name is identified by
c89/cc/c++ as the entry point of the program. In that case, the Program
Management Binder (link editor) default rules will determine the entry point
of the program. For more information about the Program Management
Binder and the ENTRY control statement, see z/OS MVS Program
Management: User’s Guide and Reference.
The function //ceestart is the default. When the default function entry point
is used, a binder ORDER control statement is generated by c89/cc/c++ to
cause the CEESTART code topic to be ordered to the beginning of the
program. Specify the name with a trailing blank to disable this behavior, as
in "//ceestart ". For more information about the Program Management
Binder and the ORDER control statement, see z/OS MVS Program
Management: User’s Guide and Reference.
This option may be required when building products which are intended to
be installed using the IBM SMP/E product. When installing ++MOD
elements with SMP/E, binder control statements should be provided in the
JCLIN created to install the product instead of being embedded in the
elements themselves.
-F Ignored by cc. Provided for compatibility with historical implementations of
cc. Flagged as an error by c89 and c++.
-f Ignored by cc. Provided for compatibility with historical implementations of
cc. Flagged as an error by c89 and c++.
Historical implementations of C/C++ used this option to enable floating-point
support. Floating-point is automatically included in z/OS XL C/C++.
However, in z/OS XL C/C++, two types of floating-point support are
available:
HEXADECIMAL
Base 16 IBM System z9
hexadecimal format. The IBM System z9
Chapter 2. Shell command descriptions 71