Gcc preprocessor manual

This manual discusses the GNU C preprocessor, which provides a small superset of the features of ISO Standard C. In its default mode, the GNU C preprocessor does not do a few things required by the standard. GCC 61 MANUAL 1/2 The C preprocessor, often known as cpp, is a macro processor that is used automatically by the C compiler to transform your program before compilation. It is called a macro processor because it allows you to define macros, . This manual lists only one of the two forms, whichever is not the default. For further, Use of these macros in user code might normally lead to spurious warnings, however GCC 's integrated preprocessor has enough context to avoid warning in these cases.

C Preprocessor Abuse. A lot of people recommend avoiding macros. With “ const ” and “ inline ”, a lot of the things that used to require macros can now be done in plain C code. However, the C preprocessor has a lot more to offer. If you haven’t read the GCC preprocessor manual, you should. This manual discusses the GNU C preprocessor, which provides a small superset of the features of ISO Standard C. In its default mode, the GNU C preprocessor does not do a few things required by the standard. The C preprocessor implements the macro language used to transform C, C++, and Objective-C programs before they are compiled. It can also be useful on its own. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version or any later version published by the Free.

For details, refer to the GCC Compiler Manual and our own GCC Disables preprocessor definitions and Analog Devices keyword extensions that do. Top (The C Preprocessor) The C preprocessor implements the macro language used to transform C, C++, and Objective-C GNU Free Documentation License. The GCC manual documents only the nondefault version of long name options that have As you know, the preprocessor executes against each source code file.