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Compiler Features
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ARM assembler instruction intrinsics supported by
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European Telecommunications Standards Institute (E
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Compiler type attribute, __attribute__((bitband))
--bitband compiler command-line option
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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
PreCompiled Header (PCH) files
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When you compile source files, the included header files are also compiled. If a header file is included in more than one source file, it is recompiled when each source file is compiled. Also, you might include header files that introduce many lines of code, but the primary source files that include them are relatively small. Therefore, it is often desirable to avoid recompiling a set of header files by precompiling them. These are referred to as PCH files.
By default, when the compiler creates a PCH file, it:
takes the name of the primary source file and replaces the suffix with
.pchcreates the file in the same directory as the primary source file.
Note
Support for PCH processing is not available when you specify multiple source files in a single compilation. In such a case, the compiler issues an error message and aborts the compilation.
Note
Do not assume that if a PCH file is available, it is used by the compiler. In some cases, system configuration issues mean that the compiler might not always be able to use the PCH file.
The compiler can precompile header files automatically, or enable you to control the precompilation.
See also- Tasks
- Concepts
- Reference
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0375D |
| Non-Confidential | ID062912 |
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