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Compiler User Guide

Conventions and Feedback Overview of the Compiler Getting Started with the Compiler Compiler Features Compiler intrinsics Performance benefits of compiler intrinsics ARM assembler instruction intrinsics supported by Generic intrinsics supported by the compiler Compiler intrinsics for controlling IRQ and FIQ in Compiler intrinsics for inserting optimization bar Compiler intrinsics for inserting native instructi Compiler intrinsics for Digital Signal Processing European Telecommunications Standards Institute (E Compiler support for European Telecommunications S Overflow and carry status flags for C and C++ code Texas Instruments (TI) C55x intrinsics for optimiz Compiler support for accessing registers using nam Pragmas recognized by the compiler Compiler and processor support for bit-banding Compiler type attribute, __attribute__((bitband)) --bitband compiler command-line option How the compiler handles bit-band objects placed o Compiler support for thread-local storage Compiler eight-byte alignment features Using compiler and linker support for symbol versi PreCompiled Header (PCH) files Automatic PreCompiled Header (PCH) file processing PreCompiled Header (PCH) file processing and the h PreCompiled Header (PCH) file creation requirement Compilation with multiple PreCompiled Header (PCH) Obsolete PreCompiled Header (PCH) files Manually specifying the filename and location of a Selectively applying PreCompiled Header (PCH) file Suppressing PreCompiled Header (PCH) file processi Message output during PreCompiled Header (PCH) pro Performance issues with PreCompiled Header (PCH) f Default compiler options that are affected by opti Compiler Coding Practices Compiler Diagnostic Messages Using the Inline and Embedded Assemblers of the AR

Compiler User Guide

Selectively applying PreCompiled Header (PCH) file processing

Selectively applying PreCompiled Header (PCH) file processing

You can selectively include and exclude header files for PCH file processing, even if you are using automatic PCH file processing. Do this by inserting a manual header stop point using the #pragma hdrstop directive in the primary source file. Insert it before the first token that does not belong to a preprocessing directive. This enables you to specify where the set of header files that is subject to precompilation ends. For example,

#include "xxx.h"
#include "yyy.h"
#pragma hdrstop
#include "zzz.h"

In this example, the PCH file includes the processing state for xxx.h and yyy.h but not for zzz.h. This is useful if you decide that the information following the #pragma hdrstop does not justify the creation of another PCH file.

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