On 10/22/12 8:49 AM, Phil Blundell wrote:
On Mon, 2012-10-22 at 14:40 +0100, Richard Purdie wrote:
On Mon, 2012-10-22 at 14:58 +0200, Steffen Sledz wrote:
Just a short question: Does oe[-core] provide a generic method to
create packages containing binaries/libraries with profiling support?
Have a look at the section "Optimization flags" in bitbake.conf. You
should be able to add the -pg flag to
FULL_OPTIMIZATION/DEBUG_OPTIMIZATION and get what you're looking for.
I think you need a bit of special handling around eglibc as well. But
otherwise yes, I've done basically this in the past and it seems to work
fine.
For our environment we do:
# Add profiling optimization type
PROFILING_OPTIMIZATION = "${FULL_OPTIMIZATION} -fno-omit-frame-pointer
-fvisibility=default"
SELECTED_OPTIMIZATION[vardeps] += "PROFILING_OPTIMIZATION"
# Uncomment to enable profiling
#SELECTED_OPTIMIZATION = "${PROFILING_OPTIMIZATION}"
You can certainly add -pg to the optimization arguments as well. As others have
said, you'll need to have the profiling libgcc/libc components if you use -pg.
But this is a simple way to make your own customized optimization. If you want
to only enable it for one package you can do something like:
SELECTED_OPTIMIZATION_pn-<recipe> = "${PROFILING_OPTIMIZATION}"
--Mark
p.
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