atomic_exchange_1' follow
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o: in function `WTFReportBacktrace':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/Assertions.cpp:251: undefined reference to `__atomic_compare_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o: in function `WTFLoggingAccumulator::accumulate(WTF::String const&)':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/Assertions.cpp:337: undefined reference to `__atomic_compare_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o: in function `.L0 ':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/Lock.h:60: undefined reference to `__atomic_compare_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o: in function `.L0 ':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/text/StringBuilder.h:72: undefined reference to `__atomic_compare_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o: in function `.L0 ':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/text/StringImpl.h:1048: undefined reference to `__atomic_compare_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/WTF/wtf/CMakeFiles/WTF.dir/Assertions.cpp.o:/builddir/build/BUILD/wpewebkit-2.21.2/Source/WTF/wtf/Lock.h:60: more undefined references to `__atomic_compare_exchange_1' follow
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/bmalloc/CMakeFiles/bmalloc.dir/bmalloc/Allocator.cpp.o: in function `.L0 ':
BUILDSTDERR: /usr/include/c++/8/bits/std_mutex.h:195: undefined reference to `__atomic_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/bmalloc/CMakeFiles/bmalloc.dir/bmalloc/Allocator.cpp.o: in function `.L0 ':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/bmalloc/bmalloc/PerProcess.h:91: undefined reference to `__atomic_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/bmalloc/CMakeFiles/bmalloc.dir/bmalloc/Allocator.cpp.o: in function `bmalloc::Allocator::allocateImpl(unsigned long, unsigned long, bool)':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/bmalloc/bmalloc/Allocator.cpp:81: undefined reference to `__atomic_exchange_1'
BUILDSTDERR: /usr/bin/ld: /builddir/build/BUILD/wpewebkit-2.21.2/Source/bmalloc/bmalloc/Allocator.cpp:94: undefined reference to `__atomic_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/bmalloc/CMakeFiles/bmalloc.dir/bmalloc/Allocator.cpp.o: in function `.LVL255':
BUILDSTDERR: /builddir/build/BUILD/wpewebkit-2.21.2/Source/bmalloc/bmalloc/PerProcess.h:103: undefined reference to `__atomic_exchange_1'
BUILDSTDERR: /usr/bin/ld: ../../lib/../Source/bmalloc/CMakeFiles/bmalloc.dir/bmalloc/Deallocator.cpp.o:/usr/include/c++/8/bits/atomic_base.h:413: more undefined references to `__atomic_exchange_1' follow
BUILDSTDERR: collect2: error: ld returned 1 exit status
BUILDSTDERR: make[2]: *** [Source/WebDriver/CMakeFiles/WebDriver.dir/build.make:260: bin/WPEWebDriver] Error 1
RPM build errors:
BUILDSTDERR: make[1]: *** [CMakeFiles/Makefile2:1287: Source/WebDriver/CMakeFiles/WebDriver.dir/all] Error 2
BUILDSTDERR: make: *** [Makefile:155: all] Error 2
BUILDSTDERR: error: Bad exit status from /var/tmp/rpm-tmp.y08lkz (%build)
BUILDSTDERR:     Bad exit status from /var/tmp/rpm-tmp.y08lkz (%build)
Child return code was: 1
EXCEPTION: [Error()]
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 96, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/util.py", line 626, in do
    raise exception.Error("Command failed: \n # %s\n%s" % (command, output), child.returncode)
mockbuild.exception.Error: Command failed: 
 # bash --login -c /usr/bin/rpmbuild -bb --target riscv64 --nodeps /builddir/build/SPECS/wpewebkit.spec