Re: [Buildroot] [PATCH] [RFC] package/boost: Boost.Atomic needs atomic intrinsics

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

On Mon,  5 Dec 2022 13:54:22 +0100
Michael Nosthoff via buildroot <buildroot@buildroot.org> wrote:

> From: Michael <buildroot@heine.tech>
> 
> similar to previous problems with nios2 and not-available atomic ints
> the build for Boost.Atomics also fails for ARC Targets which don't
> have the ATOMICS_EXT flag set.
> 
> according to [0] "Boost.Atomic has a hard requirement of the native
> atomic operations on bytes". The same tests mentioned there fail for
> ARC.
> 
> so introduce a dependency on BR2_ARC_ATOMIC_EXT for BR2_arc.
> 
> Fixes:
>   http://autobuild.buildroot.net/results/4ca54a85672d7b9328b1909b457e548c6032a493
> 
> [0] https://github.com/boostorg/atomic/issues/42#issuecomment-734130348
> 
> Signed-off-by: Michael Nosthoff <buildroot@heine.tech>

I wish it would be this simple, but this new "depends on" needs to be
propagated to all places where BR2_PACKAGE_BOOST_ATOMIC is selected.

Aka:

package/boost/Config.in:        select BR2_PACKAGE_BOOST_ATOMIC
package/boost/Config.in:        select BR2_PACKAGE_BOOST_ATOMIC
package/domoticz/Config.in:     select BR2_PACKAGE_BOOST_ATOMIC
package/gnuradio/Config.in:     select BR2_PACKAGE_BOOST_ATOMIC
package/libcpprestsdk/Config.in:        select BR2_PACKAGE_BOOST_ATOMIC
package/log4cxx/Config.in:      select BR2_PACKAGE_BOOST_ATOMIC if !BR2_TOOLCHAIN_GCC_AT_LEAST_7
package/uhd/Config.in:  select BR2_PACKAGE_BOOST_ATOMIC

And of course, if there's anything that selects those options, the new
depends on should be propagated to them again.

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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