Performing C++ SOURCE FILE Test HAVE_CXX_ATOMICS_WITHOUT_LIB failed with the following output:
Change Dir: /home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_25a4e/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_25a4e.dir/build.make CMakeFiles/cmTC_25a4e.dir/build
make[2]: Entering directory '/home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_25a4e.dir/src.cxx.o
/home/buildroot/autobuild/instance-1/output-1/host/bin/sparc-linux-g++ --sysroot=/home/buildroot/autobuild/instance-1/output-1/host/sparc-buildroot-linux-uclibc/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DHAVE_CXX_ATOMICS_WITHOUT_LIB -std=c++11  -DNDEBUG   -o CMakeFiles/cmTC_25a4e.dir/src.cxx.o -c /home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp/src.cxx
Linking CXX executable cmTC_25a4e
/home/buildroot/autobuild/instance-1/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_25a4e.dir/link.txt --verbose=1
/home/buildroot/autobuild/instance-1/output-1/host/bin/sparc-linux-g++ --sysroot=/home/buildroot/autobuild/instance-1/output-1/host/sparc-buildroot-linux-uclibc/sysroot  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DHAVE_CXX_ATOMICS_WITHOUT_LIB -std=c++11  -DNDEBUG    CMakeFiles/cmTC_25a4e.dir/src.cxx.o  -o cmTC_25a4e 
/home/buildroot/autobuild/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/8.3.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: CMakeFiles/cmTC_25a4e.dir/src.cxx.o: in function `main':
src.cxx:(.text.startup+0x14): undefined reference to `__atomic_fetch_add_4'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_25a4e.dir/build.make:86: recipe for target 'cmTC_25a4e' failed
make[2]: *** [cmTC_25a4e] Error 1
make[2]: Leaving directory '/home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_25a4e/fast' failed
make[1]: *** [cmTC_25a4e/fast] Error 2
make[1]: Leaving directory '/home/buildroot/autobuild/instance-1/output-1/build/pulseview-0.4.1/CMakeFiles/CMakeTmp'


Source file was:

#include <atomic>
std::atomic<int> x;
int main() {
  return std::atomic_fetch_add_explicit(&x, 1, std::memory_order_seq_cst);
}