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#1 2005-02-10 02:13:30
- z4ziggy
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- From: Israel
- Registered: 2004-03-29
- Posts: 573
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gcc options for optimizing static bin
whats the best way to optimize (size wise) a static program using gcc (not uclibc or similar) for compiling? ie, remove debug info & symbols, optimize for size (-Os), etc.
tnx.
[EDIT]
up-til now, the best i got was with :
gcc -o unionctl-static unionctl.c -static -s -Os -Wl,--gc-sectionsOffline
#2 2005-02-10 16:52:12
- phrakture
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- Registered: 2003-10-29
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Re: gcc options for optimizing static bin
optimizing for size or speed?
if looking for speed over size, then -funroll_loops is great
I also recall -fomit_frame_pointer (or whatever) doing some good for speed and memory usage (it tires to pass as much in registers as possible, instead of pushing it on the stack)
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#3 2005-02-10 17:19:49
- z4ziggy
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- From: Israel
- Registered: 2004-03-29
- Posts: 573
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#4 2005-02-10 18:57:19
- phrakture
- Arch Overlord
- From: behind you
- Registered: 2003-10-29
- Posts: 7,879
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Re: gcc options for optimizing static bin
for size:
-fno-inline (removes all inline functions) - might do a small amount
-fmerge-constants (tries to combine constants with the same value)
that's all i can really come up with... I think the second one is enabled by default... not sure
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