Using Options for Preprocessing

Use these options to preprocess your source files without compiling them. When using these options, only the preprocessing phase of compilation is activated.

Using -E

Use this option to preprocess to stdout. For example, to preprocess two source files and write them to stdout, enter the following command:

icpc -E prog1.cpp prog2.cpp

Using -P

Use this option to preprocess to a .i file omitting#line directives. For example, the following command creates two files named prog1.i and prog2.i, which you can use as input to another compilation:

icpc -P prog1.cpp prog2.cpp

Caution

Existing files with the same name and extension are overwritten when you use this option.

Using -EP

Use this option to preprocess to stdout omitting #line directives.

icpc -EP prog1.cpp prog2.cpp

Using -C

Use this option to retain comments. In this example:

icpc -C -P prog1.cpp prog2.cpp

the compiler preserves comments in the prog1.i preprocessed file.

Option Summary

The following table summarizes the preprocessing options: