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James schrieb: |
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> Hello, |
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> |
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> On an amd64, If I want to add -fomit-frame-pointer to a system's |
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> CFLAGS setting, I can just add it and eventually all of the |
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> executables will be recompile (willing to wait) |
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> or do I have to rebuild system (all packages) or such to switch? |
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> |
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> |
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> James |
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> |
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> |
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As the wiki says |
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|
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SNIP |
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|
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-fomit-frame-pointer tells gcc to omit frame pointers, freeing up an |
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additional register on the CPU. This is mainly useful on x86 as most |
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other arches, like AMD64, have it on by default at -O2 or greater |
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|
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SNAP |
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|
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you do not recompile anything, if you had -O2 or greater before. |
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