SLAU132V User guide | 德州仪器 TI.com.cn

SLAU132V October 2004 – February 2020

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2.5.4 Generating a Preprocessed Listing File (--preproc_only Option)

The --preproc_only option allows you to generate a preprocessed version of your source file with an extension of .pp. The compiler's preprocessing functions perform the following operations on the source file:

Each source line ending in a backslash (\) is joined with the following line.
Trigraph sequences are expanded.
Comments are removed.
#include files are copied into the file.
Macro definitions are processed.
All macros are expanded.
All other preprocessing directives, including #line directives and conditional compilation, are expanded.

The --preproc_only option is useful when creating a source file for a technical support case or to ask a question about your code. It allows you to reduce the test case to a single source file, because #include files are incorporated when the preprocessor runs.