Tells the compiler to generate code for a specific architecture.
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IA-32 architecture, Intel® 64 architecture
| Linux: | None |
| Mac OS: | -m32 -m64 |
| Windows: | None |
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| OFF | The compiler's behavior depends on the host system. |
These options tell the compiler to generate code for a specific architecture.
| Option | Description |
|---|---|
| -m32 | Tells the compiler to generate code for IA-32 architecture. |
| -m64 | Tells the compiler to generate code for Intel® 64 architecture. |
The -m32 and -m64 options are the same as options -arch i386 and -arch x86_64, respectively. Note that these -arch options are provided for compatibility with gcc. They are not related to the Windows option /arch.
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