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>> No nothing crazy: |
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>> CFLAGS="-Os -pipe -mtune=i686" |
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> |
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> i686? That's not amd64. You need something 64bit. Just use march=native |
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> instead of mtune=i686. |
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Wait, what! I could swear I was reading march=native just a few minutes ago. |
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| 9 |
mtune=i686 on amd64 just doesn't seem right, but it should compile. |
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# echo | gcc -dM -E - -march=native |
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/usr/libexec/gcc/x86_64-pc-linux-gnu/4.5.3/cc1 -E -quiet -v - |
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-D_FORTIFY_SOURCE=2 -mtune=i686 -march=x86-64 |
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| 15 |
gcc sets the correct march even if you set the wrong mtune. |
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| 17 |
But as Michael says, just use march=native and you should be fine. |
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