atomic: check if -latomic is required for std::atomic

* configure.ac,
python/Makefile.am,
tests/Makefile.am: Here.
9 jobs for er/tmp in 84 minutes and 32 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #93200
alpine-gcc

00:55:49

passed #93201
arch-clang

00:46:27

passed #93202
arch-gcc-glibcxxdebug

01:17:34

passed #93199
debian-gcc-snapshot

01:24:31

passed #93197
debian-stable-gcc

01:19:45

passed #93198
debian-unstable-gcc-coverage

00:57:21

89.6%
passed #93203
mingw-shared

00:10:04

passed #93204
mingw-static

00:09:13

failed #93205
armv7
raspbian

01:01:22

 
Name Stage Failure
failed
raspbian Build
make[1]: Leaving directory '/mnt/data/gitlab-runner/builds/o5DHHxgA/0/spot/spot/spot-2.9.0.dev/_build/sub'
make: *** [Makefile:1559: distcheck] Error 1
Uploading artifacts...
Runtime platform arch=arm os=linux pid=19378 revision=a987417a version=12.2.0
WARNING: ./spot-*/_build/sub/tests/*/*.log: no matching files
./*.log: found 1 matching files

./*.tar.gz: found 1 matching files

Uploading artifacts to coordinator... ok
id=93205 responseStatus=201 Created token=vFNuoihk
ERROR: Job failed: exit status 1