XL Fortran Enterprise Edition for AIX : User's Guide - IBM

Table 3. Options That Control Input to the Compiler (continued)
Command-Line
Option
-qsuffix={suboptions}
@PROCESS
Directive Description See Page
Specifies the source-file suffix on
the command line.
244
Options That Specify the Locations of Output Files
The following options specify names or directories where the compile stores output
files.
In the table, an * indicates that the option is processed by the ld command, rather
than by the XL Fortran compiler; you can find more information about these
options in the AIX information for the ld command.
Related Information: See “XL Fortran Output Files” on page 34 and “Options
That Control Input to the Compiler” on page 68.
Table 4. Options That Specify the Locations of Output Files
Command-Line
Option
@PROCESS
Directive
Description
-d Leaves preprocessed source files produced
by cpp, instead of deleting them.
Default: Temporary files produced by cpp
are deleted.
-o name* Specifies a name for the output object,
executable, or assembler source file.
Default: -o a.out
-qmoddir=directory
Specifies the location for any module
(.mod) files that the compiler writes.
Default: .mod files are placed in the
current directory.
See
Page
106
116
203
Options for Performance Optimization
The following options can help you to speed up the execution of your XL Fortran
programs or to find areas of poor performance that can then be tuned. The most
important such option is -O. In general, the other performance-related options
work much better in combination with -O; some have no effect at all without -O.
Related Information: See “Optimizing XL Fortran Programs” on page 305.
Some of the options in “Options for Floating-Point Processing” on page 86 can also
improve performance, but you must use them with care to avoid error conditions
and incorrect results.
Table 5. Options for Performance Optimization
Command-Line
Option
-O[level]
-qoptimize[=level]
-qnooptimize
@PROCESS
Directive
OPTimize[(level)]
NOOPTimize
Description
Specifies whether code is optimized during
compilation and, if so, at which level (0, 2,
3, 4, or 5).
Default: -qnooptimize
See
Page
114
70 XL Fortran Enterprise Edition for AIX : User’s Guide