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Cx51 User's Guide
Cx51 Introduction Compiling Programs Language Extensions Preprocessor Header Files
How #include Works Including Files Once Only Macros Simple Macros Complex Macros Macro Operators Stringize (#) Token Pasting (##) Defined Predefined Macros Undefining and Redefining Macro Caveats Preprocessor Directives Conditional Compilation #define #elif #else #endif #error #if #ifdef #ifndef #include #line #message #pragma #undef #warning Advanced Programming 8051 Derivatives Error Messages Library Reference Appendix#pragma
The #pragma directive specifies compiler directives that may change during program compilation.
#pragma directive « directive ... »
Basically, you place pragmas in your program source code where you want the directive(s) to take effect. Refer to the Cx51 Compiler Directives for a complete list of directives you may specify using #pragma.
Note
- Not all directives may be specified using #pragma.
- Some directives may be specified only once (at the top of the file) and some may be specified multiple times without the source code.
- Some directives may be specified on the command line and overridden with #pragma.
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