ent to 'struct cds_wfq_node **' from 'int' makes pointer from integer without a cast [-Wint-conversion]
BUILDSTDERR:   old_tail = uatomic_xchg(&q->tail, &node->next);
BUILDSTDERR:            ^
BUILDSTDERR: In file included from compat_futex.c:31:
BUILDSTDERR: ../include/urcu/arch.h:26:2: error: #error "Cannot build: unrecognized architecture detected."
BUILDSTDERR:  #error "Cannot build: unrecognized architecture detected."
BUILDSTDERR:   ^~~~~
BUILDSTDERR: ../include/urcu/static/wfqueue.h:90:2: warning: implicit declaration of function 'CMM_STORE_SHARED' [-Wimplicit-function-declaration]
BUILDSTDERR:   CMM_STORE_SHARED(*old_tail, node);
BUILDSTDERR:   ^~~~~~~~~~~~~~~~
BUILDSTDERR: ../include/urcu/static/wfqueue.h: In function '___cds_wfq_node_sync_next':
BUILDSTDERR: ../include/urcu/static/wfqueue.h:105:17: warning: implicit declaration of function 'CMM_LOAD_SHARED' [-Wimplicit-function-declaration]
BUILDSTDERR:   while ((next = CMM_LOAD_SHARED(node->next)) == NULL) {
BUILDSTDERR:                  ^~~~~~~~~~~~~~~
BUILDSTDERR: ../include/urcu/static/wfqueue.h:105:15: warning: assignment to 'struct cds_wfq_node *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
BUILDSTDERR:   while ((next = CMM_LOAD_SHARED(node->next)) == NULL) {
BUILDSTDERR:                ^
BUILDSTDERR: ../include/urcu/static/wfqueue.h:110:4: warning: implicit declaration of function 'caa_cpu_relax' [-Wimplicit-function-declaration]
BUILDSTDERR:     caa_cpu_relax();
BUILDSTDERR:     ^~~~~~~~~~~~~
BUILDSTDERR: ../include/urcu/static/wfqueue.h: In function '___cds_wfq_dequeue_blocking':
BUILDSTDERR: ../include/urcu/static/wfqueue.h:132:55: warning: comparison between pointer and integer
BUILDSTDERR:   if (q->head == &q->dummy && CMM_LOAD_SHARED(q->tail) == &q->dummy.next)
BUILDSTDERR:                                                        ^~
BUILDSTDERR: make[1]: *** [Makefile:647: wfqueue.lo] Error 1
BUILDSTDERR: In file included from compat_futex.c:32:
BUILDSTDERR: ../include/urcu/futex.h: In function 'futex':
BUILDSTDERR: ../include/urcu/futex.h:65:17: error: '__NR_futex' undeclared (first use in this function); did you mean 'futex'?
BUILDSTDERR:   return syscall(__NR_futex, uaddr, op, val, timeout,
BUILDSTDERR:                  ^~~~~~~~~~
BUILDSTDERR:                  futex
BUILDSTDERR: ../include/urcu/futex.h:65:17: note: each undeclared identifier is reported only once for each function it appears in
BUILDSTDERR: compat_futex.c: In function 'compat_futex_noasync':
BUILDSTDERR: compat_futex.c:70:2: warning: implicit declaration of function 'cmm_smp_mb' [-Wimplicit-function-declaration]
BUILDSTDERR:   cmm_smp_mb();
BUILDSTDERR:   ^~~~~~~~~~
BUILDSTDERR: In file included from compat_futex.c:33:
BUILDSTDERR: ../include/urcu/system.h:37:3: warning: implicit declaration of function 'cmm_smp_rmc' [-Wimplicit-function-declaration]
BUILDSTDERR:    cmm_smp_rmc();  \
BUILDSTDERR:    ^~~~~~~~~~~
BUILDSTDERR: compat_futex.c:85:10: note: in expansion of macro 'CMM_LOAD_SHARED'
BUILDSTDERR:    while (CMM_LOAD_SHARED(*uaddr) == val)
BUILDSTDERR:           ^~~~~~~~~~~~~~~
make[1]: Leaving directory '/builddir/build/BUILD/userspace-rcu-0.10.1/src'
BUILDSTDERR: make[1]: *** [Makefile:647: compat_futex.lo] Error 1
BUILDSTDERR: make: *** [Makefile:475: all-recursive] Error 1
RPM build errors:
BUILDSTDERR: error: Bad exit status from /var/tmp/rpm-tmp.MRtd2U (%build)
BUILDSTDERR:     Bad exit status from /var/tmp/rpm-tmp.MRtd2U (%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/userspace-rcu.spec