Am 18.10.2012 um 17:49 schrieb Sebastian Kuzminsky:
...thanks, got that - runtests, sure, didnt think of that
>
>
>> If it is OK to assume that the build target kernel is *installed* but *not
>> running* and support files in place, then I would go a different route:
>>
>> do the build by specifying a target kernel like in 'debian/configure
>> <kernelversion>' and then investigate the config files in
>> /boot/config-<kernelversion> to find out what the target kernel is about.
>>
>> AFAICT there is no clear method I could think of whether a given
>> kernelversion string is RT_PREEMPT or generic except for looking in
>> /boot/config* .
>>
>> what do you think?
>
> I'd say, make the user tell you what kind of build they want. Maybe
> "--with-rtai=$RTAI_PATH", or "--with-xenomai=$XENOMAI_PATH", or
> "--with-preempt=$PREEMPT_PATH".
oh, you mean specify the path to the kernel config? that's best because its
unambiguous.
The type tag (rtai/preempt/xenomai) wont be enough to specify the build fully
though (thread type, build drivers, user .so vs kernel .ko does not follow) so
what I'd do is
--with-kernel=/boot/config-<whatever> which defaults to running kernel
--with-build-type=(posix,rtai,rt-preempt-user,rt-preempt-kernel,xenomai-user,xenomai-kernel)
--with-drivers (defaults to yes except for --with-build-type=posix which is
newspeak for 'sim')
the latter can be defaulted too once you have access to /boot/config*, and
checked against kernel
In practice this would look like so:
configure --enable-simulator
as before. defaults to --with-build-type=posix, and --without-drivers
but may take a --with-driver option to build drivers like sim_parport
doesnt care about kernel; fine if Gnu threads library installed.
configure
Takes the running kernel config to determine which kernel type (rtai,
xenomai, rt-preempt)
makes a default thread style (rtai, rt-preempt-user and xenomai-user
for now)
complains if running kernel is generic (non-RT)
implies --with-driver. Module type derived from thread style.
configure --with-build-type=xenomai-user
--with-kernel=/boot/config-2.6.38.8-xenomai
this would build for xenomai-2.6.38.8-xenomai provided it is installed
but needs not be running
complains if /boot/config-2.6.38.8-xenomai does not smell like a
Xenomai config
configure --with-build-type=rt-preempt-user
this would check whether the running kernel is in fact rt-preempt by
inspecting /boot/config-`uname -r` for appropriate flags, and complain
otherwise-
I think that covers it, even the garden sprinkler HAL application which was
recently mentioned - that would be --enable-simulator --with-drivers.
sounds ok?
-m
>
>
>
> --
> Sebastian Kuzminsky
>
>
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