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"Mark Shields" <laebshade@×××××.com> writes: |
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> If I remember correctly, flags like this are not recommended to enable. GCC can already pass the appropriate flags, such |
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> as MMX and SSE, to programs when compiling; the fact that this ebuild has optional use flags for this setting is a red |
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> flag, in my opinion. I would recommend researching possible problems you may have before building any programs with the |
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> MMX use flag. |
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The mmx (and sse, sse2 etc) use flags do not normally have anything to |
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do with the gcc -mmmx etc flags. Normally in a configure for a package |
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they will cause a optimised assembler to be included for certain functions |
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rather than using 'generic' C code for them. In ebuilds the mmx USE |
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flag normally selects these configure options when building the package, |
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so (unlike using CFLAGS=-mmmx) are quite safe in most cases. |
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-- |
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