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On Thu, May 28, 2009 at 22:19, Stroller <stroller@××××××××××××××××××.uk> wrote: |
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> What's the difference between supporting the "certain set of instructions" |
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> with "-march=" and doing so with USEs? |
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> |
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> Or doesn't "-march=" support additional "certain sets of instructions". What |
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> does it do, then? |
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|
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The difference is that with the USE flag, you enable the use of |
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assembly code in the source of mplayer that makes use of the "certain |
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set of instructions". The -march option enables the use of the |
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"certain set of instructions" when gcc is optimizing and so gcc will |
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use the "certain set of instructions" when it converts the source code |
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into assembly code. |
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|
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Ward |
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