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Compiler Command-line Options
2.1.125 --pch
This option instructs the compiler to use a PCH file if it exists, and to create a PCH file
otherwise.
When the option --pch is specified, the compiler searches for a PCH file with the name
filename.pch, where filename.* is the name of the primary source file. The compiler
uses the PCH file filename.pch if it exists, and creates a PCH file named filename.pch
in the same directory as the primary source file otherwise.
Restrictions
This option has no effect if you include either the option --use_pch=filename or the
option --create_pch=filename on the same command line.
See also
• --create_pch=filename on page 2-34
• --pch_dir=dir
• --pch_messages, --no_pch_messages on page 2-102
• --pch_verbose, --no_pch_verbose on page 2-102
• --use_pch=filename on page 2-129
• #pragma hdrstop on page 4-64
• #pragma no_pch on page 4-67
• Precompiled header files on page 2-17 in the Compiler User Guide.
2.1.126 --pch_dir=dir
This option enables you to specify the directory where PCH files are stored. The
directory is accessed whenever PCH files are created or used.
You can use this option with automatic or manual PCH mode.
Syntax
--pch_dir=dir
Where:
dir
is the name of the directory where PCH files are stored.
Errors
If the specified directory dir does not exist, the compiler generates an error.
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