Category
Pragma equivalent
None.
Purpose
Previews the compilation steps specified on the command line, without actually invoking any compiler components.
When this option is enabled, information is written to standard output, showing the names of the programs within the preprocessor, compiler, and linker that would be invoked, and the default options that would be specified for each program. The preprocessor, compiler, and linker are not invoked.
Usage
You can use this command to determine the commands and files that will be involved in a particular compilation. It avoids the overhead of compiling the source code and overwriting any existing files, such as .lst files.
This option displays the same information as -v, but does not invoke the compiler. The -# option overrides the -v option.
Predefined macros
None.
Examples
To preview the steps for the compilation of the source file myprogram.c, enter:
xlc myprogram.c -#