y-ignore-precompiled-header-options.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: /Y- (Ignore Precompiled Header Options)	/Y- (Ignore Precompiled Header Options)	11/04/2016	/y-	Y- compiler option [C++] -Y- compiler option [C++] /Y- compiler option [C++]	cfaecb36-58db-46b8-b04d-cca6072b1b7a

/Y- (Ignore Precompiled Header Options)

Causes all other /Y compiler options to be ignored (and cannot itself be overridden).

Syntax

/Y-

Remarks

For more information on precompiled headers, see:

• /Y (Precompiled Headers)

• Precompiled Header Files

To set this compiler option in the Visual Studio development environment

1. Open the project's Property Pages dialog box. For details, see Set C++ compiler and build properties in Visual Studio.

2. Select the Configuration Properties > C/C++ > Command Line property page.

3. Enter the compiler option in the Additional Options box.

To set this compiler option programmatically

• See xref:Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool.AdditionalOptions%2A.

See also

MSVC Compiler Options
MSVC Compiler Command-Line Syntax