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Visual Studio 2012
Visual C++
Development Tools
Building C/C++ Programs
C/C++ Building Reference
Compiling a C/C++ Program
Compiler Options
Compiler Options Listed Alphabetically
@ (Specify a Compiler Response File)
/AI (Specify Metadata Directories)
/analyze (Code Analysis)
/arch (Minimum CPU Architecture)
/bigobj (Increase Number of Sections in .Obj file)
/C (Preserve Comments During Preprocessing)
/c (Compile Without Linking)
/clr (Common Language Runtime Compilation)
/D (Preprocessor Definitions)
/doc (Process Documentation Comments)
/E (Preprocess to stdout)
/EH (Exception Handling Model)
/EP (Preprocess to stdout Without #line Directives)
/errorReport (Report Internal Compiler Errors)
/F (Set Stack Size)
Output-File (/F) Options
/favor (Optimize for Architecture Specifics)
/FC (Full Path of Source Code File in Diagnostics)
/fp (Specify Floating-Point Behavior)
/G (Optimize for Processor) Options
/GA (Optimize for Windows Application)
/Gd, /Gr, /Gz (Calling Convention)
/Ge (Enable Stack Probes)
/GF (Eliminate Duplicate Strings)
/GH (Enable _pexit Hook Function)
/Gh (Enable _penter Hook Function)
/GL (Whole Program Optimization)
/Gm (Enable Minimal Rebuild)
/GR (Enable Run-Time Type Information)
/GS (Buffer Security Check)
/Gs (Control Stack Checking Calls)
/GT (Support Fiber-Safe Thread-Local Storage)
/GX (Enable Exception Handling)
/Gy (Enable Function-Level Linking)
/GZ (Enable Stack Frame Run-Time Error Checking)
/H (Restrict Length of External Names)
/HELP (Compiler Command-Line Help)
/homeparams (Copy Register Parameters to Stack)
/hotpatch (Create Hotpatchable Image)
/I (Additional Include Directories)
/J (Default char Type Is unsigned)
/kernel (Create Kernel Mode Binary)
/link (Pass Options to Linker)
/LN (Create MSIL Module)
/MD, /MT, /LD (Use Run-Time Library)
/MP (Build with Multiple Processes)
/nologo (Suppress Startup Banner)
/O Options (Optimize Code)
/openmp (Enable OpenMP 2.0 Support)
/P (Preprocess to a File)
/Q Options (Low-Level Operations)
/RTC (Run-Time Error Checks)
/SDL (SDL Checks)
/showIncludes (List Include Files)
/Tc, /Tp, /TC, /TP (Specify Source File Type)
/U, /u (Undefine Symbols)
/V (Version Number)
/vd (Disable Construction Displacements)
/vmb, /vmg (Representation Method)
/vmm, /vms, /vmv (General Purpose Representation)
/volatile (volatile Keyword Interpretation)
/w, /Wn, /WX, /Wall, /wln, /wdn, /wen, /won (Warning Level)
/WL (Enable One-Line Diagnostics)
/Wp64 (Detect 64-Bit Portability Issues)
/X (Ignore Standard Include Paths)
/Y (Precompiled Headers)
/Z7, /Zi, /ZI (Debug Information Format)
/Za, /Ze (Disable Language Extensions)
/Zc (Conformance)
/Zg (Generate Function Prototypes)
/Zl (Omit Default Library Name)
/Zm (Specify Precompiled Header Memory Allocation Limit)
/Zp (Struct Member Alignment)
/Zs (Syntax Check Only)
/ZW (Windows Runtime Compilation)
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/AI (Specify Metadata Directories)

Visual Studio 2012

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

Copy 
/AIdirectory
directory

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.

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 General property page.

  4. Modify the Resolve #using References property.

To set this compiler option programmatically

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