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Hi, |
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how should I change/set CFLAGS/CXXFLAGS/CHOST if I want to have |
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system which can be easily migrated between AMD64 and Intel/Core |
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without recompilation? I have a few virtual servers which I can |
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not move from one arch to the other, as they have hw-specific |
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CFLAGS (different host-server hardware, both AMD64 and EM64T): |
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|
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I have systems with Athlon64/X2 and Core2Quad, with settings: |
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CFLAGS="-march=athlon64 -O2 -pipe" |
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CFLAGS="-march=core2 -O2 -pipe" |
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CHOST is always "x86_64-pc-linux-gnu". |
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|
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I'm not sure "-mtune=generic" is the right solution, because |
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it would generate code for IA32/AMD64/EM64T (if I understand |
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gcc manual correctly, for both 32bit as well as 64bit HW). |
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|
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What I'm looking for are some generic 64bit settings only for |
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AMD64/EM64T (not 32bit/IA32) similar as for distros with binary |
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distributions (i.e. I can download Ubuntu either 32bit or 64bit |
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version, no other hardware-specific difference). I know with |
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"universal" 64bit binaries I'm going to loose some pefrormance, |
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but for me flexibility with migration would overweight this |
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disadvantage... |
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|
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Jarry |
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|
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-- |
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| 30 |
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