/AI (Specify Metadata Directories)

Specifies a directory that the compiler will search to resolve file references passed to the #using directive.




The directory or path for the compiler to search.


Only one directory can be passed to an /AI invocation. Specify one /AI option for each path you want the compiler to search. For example, to add both C:\Project\Meta and C:\Common\Meta to the compiler search path for #using directives, add /AI"C:\Project\Meta" /AI"C:\Common\Meta" to the compiler command line or add each directory to the Additional #using Directories property in Visual Studio.

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++ > General property page.

  3. Modify the Additional #using Directories property.

To set this compiler option programmatically

See also

MSVC Compiler Options
MSVC Compiler Command-Line Syntax
#using Directive