Messages in this thread | | | Date | Tue, 11 Mar 2008 20:39:31 +0100 (CET) | From | Jan Engelhardt <> | Subject | Re: Faster way to run through building single modules |
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On Feb 10 2008, Sam Ravnborg and Jan Engelhardt wrote:
>>>> I was wondering whether there is a shortcut in kbuild I can take if I >>>> just want to rebuild one module. Currently, I have: >>>> >>>> make net/bridge/netfilter/ebtables.ko >>> >>>Fool kbuild to think this is an external module using: >>>make M=`pwd` net/bridge/netfilter/ebtables.ko >>> >>>That should do the trick. >> >>How would I combine that with O=? Not quite doing the right thing yet. >> >>linux$ touch net/bridge/netfilter/ebtables.c >>linux$ make O=/home/jengelh/Coding/linux-obj M=$PWD >> net/bridge/netfilter/ebtables.ko > >O=tells where to find the kernel output files. >We do not have a possibility to do so for external >modules - so they will alwys build in same dir as the source. > >Bad luck :-(
I just noticed that with v2.6.25-rc3-302-g03923eb, running make builds the final .ko really quick. Maybe there has been some magic added that skips a lot of directories, but the process certainly takes less than 120 seconds, so I am happy.
Previously, it seemed to have visited lots of directories (even though we know make is not called recursively in 2.6) before it printed "Building modules stage 2" for the first time.
Nice :)
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