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

xlc and xlC
Note: When used in the configuration file, the -W option requires
the escape sequence back slash comma (\,) to represent a
comma in the parameter string.
►►
▼ -W
a
c
I
l
▼ ,
directory
Example: To compile myprogram.s so that the option map is
passed to the binder and the option list is passed to the
assembler, enter:
xlc myprogram.s -Wl,map -Wa,list
Example: In a configuration file, use the \, sequence to
represent the comma (,):
-Wl\,map,-Wa\,list
Specifying compiler options
Compiler options perform a wide variety of functions, such as setting compiler
characteristics, describing the object code and compiler output to be produced, and
performing some preprocessor functions. You can specify compiler options in one or
more of the following ways:
v On the command line
v In your source program
v In a configuration file
The compiler uses default settings for the compiler options not explicitly set by you
in these listed ways. The defaults can be compiler defaults, installation defaults, or
the defaults set by the c89 or the xlc utility. The compiler defaults are overridden by
installation defaults, which are overridden by the defaults set by the c89 or the xlc
utilities.
When specifying compiler options, it is possible for option conflicts and
incompatibilities to occur. z/OS XL C/C++ resolves most of these conflicts and
incompatibilities in a consistent fashion, as follows:
Source overrides Command overrides Configuration overrides Default
file -----------> line ----------> file -----------> settings
Options that do not follow this scheme are summarized in the following table:
Table 35. Compiler option conflict resolution
Option Conflicting Options Resolution
-qxref -qxref=FULL -qxref=FULL
-qattr -qattr=FULL -qattr=FULL
-E -o -E
-# -v -#
-F -B | -t |-W | -qpath|
configuration file settings
812 z/OS V1R9.0 UNIX System Services Command Reference
-B| -t | -W |-qpath
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