# m32, m64, Qm32, Qm64

Tells the compiler to generate code for a specific architecture.

## Syntax

Linux: | -m32 -m64

macOS: | -m64

Windows: | /Qm32 /Qm64

## Arguments

None

## Default

OFF | The compiler's behavior depends on the host system.

## Description

These options tell the compiler to generate code for a specific architecture.

Option | Description
--- | ---
-m32 or /Qm32 | Tells the compiler to generate code for IA-32 architecture.
-m64 or /Qm64 | Tells the compiler to generate code for Intel® 64 architecture.

The -m64 option is the same as macOS option -arch x86_64. This option is not related to the Intel® C++ Compiler option arch.

On Linux* systems, these options are provided for compatibility with gcc.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Code Generation Options