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Commit 9f94b3b354 "package/iperf3: bump to version 3.16" updated
the package but forgot to reflect a breaking change mentioned in
the release note [1], "iperf3 now requires pthreads and C atomic
variables to compile and run".
When the toolchain has no atomic support, or the libatomic is not
added in the linker flags, the compilation now fail with output:
arm-buildroot-linux-gnueabi/bin/ld: ./.libs/libiperf.so: undefined reference to '__atomic_load_8'
This issue can be seen when running the iperf3 runtime test, with
command:
support/testing/run-tests \
-d dl -o output_test \
tests.package.test_iperf3
This commit fixes the issue by adding a dependency on
BR2_TOOLCHAIN_HAS_ATOMIC and by adding an upstream patch to detect
if linking to libatomic is needed.
Fixes: [2]
[1] https://github.com/esnet/iperf/releases/tag/3.16
[2] https://gitlab.com/buildroot.org/buildroot/-/jobs/6466933622
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
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