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How do I enable the SSE/SSE2 instruction set in Visual Studio 2008 (using CMake)?

Answer 1

+1 A:

It is Project->Properties... (same path as above)

Naveen 2009-09-26 10:18:41

Thanks for your reply.I tried but in Project --> Properties I have:- Common Properties + Startup Project + Project Dependencies + Debug Source Files- Configuration Properties + ConfigurationI don't find any option for the instruction set.

Angelo 2009-09-26 10:26:28

Answer 2

+2 A:

If you're looking for SSE/SSE2: Project > Properties > Configuration Properties > C/C++ > Code Generation > Enable Enhanced Instruction Set, or append /arch:SSE (or /arch:SSE2) in Command Line > Additional Options.

You need to have a native project, and at least one .cpp file added to access this, though.

PiotrLegnica 2009-09-26 10:34:42

Thank you so much! It's not a native project, but I create it with CMake.

Angelo 2009-09-26 10:44:32

If you regenerate the project files using CMake the settings will not be stored when using this approach. See my answer for details on a permanent fix...

larsm 2009-09-27 21:41:29

Answer 3

A:

If you are using inline assembler "__asm { .... }" you don't need to enable it.

But if you enable SSE you have to be careful. It may be that the code ist slower than normal fpu code.

greets, Andre

2009-09-26 12:29:48

Answer 4

+2 A:

Using CMake you could add the following to CMakeLists.txt:

IF(MSVC)
   ADD_DEFINITIONS(/arch:SSE)
ENDIF(MSVC)

or /arc:SSE2.

larsm 2009-09-27 17:04:43

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How do I enable the SSE/SSE2 instruction set in Visual Studio 2008 (using CMake)?

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