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/Gy (Enable Function-Level Linking)

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Allows the compiler to package individual functions in the form of packaged functions (COMDATs).

/Gy[-]

Remarks

The linker requires that functions be packaged separately as COMDATs to exclude or order individual functions in a DLL or .exe file.

You can use the linker option /OPT (Optimizations) to exclude unreferenced packaged functions from the .exe file.

You can use the linker option /ORDER (Put Functions in Order) to include packaged functions in a specified order in the .exe file.

Inline functions are always packaged if they are instantiated as calls (which occurs, for example, if inlining is off or you take a function address). In addition, C++ member functions defined in the class declaration are automatically packaged; other functions are not, and selecting this option is required to compile them as packaged functions.

Note

The /ZI option, used for Edit and Continue, automatically sets the /Gy option.

To set this compiler option in the Visual Studio development environment

  1. Open the project's Property Pages dialog box. For details, see How to: Open Project Property Pages.

  2. Click the C/C++ folder.

  3. Click the Code Generation property page.

  4. Modify the Enable Function-Level Linking property.

To set this compiler option programmatically

See Also

Reference

Compiler Options

Setting Compiler Options

Change History

Date

History

Reason

July 2008

Revised which options automatically set /Gy.

Content bug fix.