[Buildroot] [PATCH 1/1] cutelyst: link with libatomic when needed

Thomas Petazzoni thomas.petazzoni at bootlin.com
Tue Aug 28 09:58:58 UTC 2018


Hello,

On Mon, 27 Aug 2018 18:41:02 +0200, Fabrice Fontaine wrote:
> On some architectures, atomic binutils are provided by the libatomic
> library from gcc. Linking with libatomic is therefore necessary,
> otherwise the build fails with:
> 
> sparc-buildroot-linux-uclibc/sysroot/lib/libatomic.so.1: error adding symbols: DSO missing from command line
> 
> This is often for example the case on sparcv8 32 bit.
> 
> Fixes:
>  - http://autobuild.buildroot.net/results/9e307ab9c7067b26d7b33a572204394808e25772
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>

If this package unconditionally needs atomic intrinsics, then it also
needs to depends on BR2_TOOLCHAIN_HAS_ATOMIC. Indeed, libatomic is not
available in gcc < 4.8.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com


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