AN3350 datasheet(162/185 Pages) STMICROELECTRONICS

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Pragmas for preprocessing

AN3350

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Doc ID 018512 Rev 2

Remarks

If you do not specify the file name, the compiler gives the precompiled header file the same

name as its source file.

Example 113 shows sample source code from a precompiled header source file. By using

the predefined symbols __cplusplus and the pragma precompile_target, the

compiler can use the same source code to create different precompiled header files for C

and C++.

Example 113 Using #pragma precompile_target

#ifdef __cplusplus

#pragma precompile_target "MyCPPHeaders"

#else

#pragma precompile_target "MyCHeaders"

#endif

This pragma does not correspond to any panel setting.

20.17

simple_prepdump

Controls the suppression of comments in preprocessing output.

Syntax

#pragma simple_prepdump on | off | reset

Remarks

By default, the compiler adds comments about the current include file being in

preprocessing output. Enabling this pragma disables these comments.

By default, this pragma is off.

20.18

space_prepdump

Controls whether or not the compiler removes or preserves whitespace in the

preprocessor’s output.

Syntax

#pragma space_prepdump on | off | reset

Remarks

This pragma is useful for keeping the starting column aligned with the original source code,

though the compiler attempts to preserve space within the line. This pragma does not apply

to expanded macros.

By default, this pragma is off.

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