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Specifies the directory where PCH files are stored.


This option is deprecated.

Support for Precompiled Header (PCH) files is deprecated from ARM Compiler 5.05 onwards on all platforms. Note that ARM Compiler on Windows 8 never supported PCH files.

The directory is accessed whenever PCH files are created or used.

You can use this option with automatic or manual PCH mode.





is the name of the directory where PCH files are stored.

If dir is unspecified, the compiler faults use of --pch_dir.


If the specified directory dir does not exist, the compiler generates an error.

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