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On 12/02/2017 09:32 PM, Adam Carter wrote: |
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> |
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> Does having the hardened USE flag enabled = having a hardened toolchain? |
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If only it were that simple... what you really need to know is, did you |
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build everything on your system with PIE enabled? |
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* Some packages have "pie" USE flags, and it's only forced-on in the |
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hardened profiles. I think that flag may actually have been masked |
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in the default profiles? |
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* Even if you /built/ a hardened compiler, you can switch it off |
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with gcc-config. |
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* Your local flags in make.conf can disable some of that stuff, too. |
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If you were using a hardened *profile*, then chances are that you won't |
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need to rebuild (unless you switched to a non-hardened compiler on |
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purpose). Otherwise, I would play it safe and rebuild everything. The |
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newer GCC probably produces more efficient code anyway, and you will |
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preempt all of the inevitable problems that no one thought of and that |
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weren't mentioned in the news item. |
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