found
-- Looking for posix_spawn
-- Looking for posix_spawn - found
-- Looking for pread
-- Looking for pread - found
-- Looking for realpath
-- Looking for realpath - found
-- Looking for sbrk
-- Looking for sbrk - found
-- Looking for strerror
-- Looking for strerror - found
-- Looking for strerror_r
-- Looking for strerror_r - found
-- Looking for strerror_s
-- Looking for strerror_s - not found
-- Looking for setenv
-- Looking for setenv - found
-- Looking for dlopen
-- Looking for dlopen - found
-- Looking for dladdr
-- Looking for dladdr - not found
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Looking for sched_getaffinity
-- Looking for sched_getaffinity - found
-- Looking for CPU_COUNT
-- Looking for CPU_COUNT - found
-- Looking for pthread_getname_np
-- Looking for pthread_getname_np - found
-- Looking for pthread_setname_np
-- Looking for pthread_setname_np - found
-- Looking for ffi_call
-- Looking for ffi_call - found
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Success
-- Performing Test LLVM_HAS_ATOMICS
-- Performing Test LLVM_HAS_ATOMICS - Success
-- Performing Test SUPPORTS_VARIADIC_MACROS_FLAG
-- Performing Test SUPPORTS_VARIADIC_MACROS_FLAG - Success
-- Performing Test SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG
-- Performing Test SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG - Failed
-- Performing Test HAS_MAYBE_UNINITIALIZED
-- Performing Test HAS_MAYBE_UNINITIALIZED - Success
/builddir/build/BUILD/llvm-7.0.1.src/cmake/config.guess: unable to guess system type
This script, last modified 2011-08-20, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
If the version you run (/builddir/build/BUILD/llvm-7.0.1.src/cmake/config.guess) is already up to date, please
send the following data and any information you think might be
pertinent to <config-patches@gnu.org> in order to provide the needed
information to handle your system.
config.guess timestamp = 2011-08-20
uname -m = riscv64
uname -r = 5.5.0-0.rc5.git0.1.1.riscv64.fc32.riscv64
uname -s = Linux
uname -v = #1 SMP Mon Jan 6 17:31:22 UTC 2020
/usr/bin/uname -p = riscv64
/bin/uname -X     = 
hostinfo               = 
/bin/universe          = 
/usr/bin/arch -k       = 
/bin/arch              = riscv64
/usr/bin/oslevel       = 
/usr/convex/getsysinfo = 
UNAME_MACHINE = riscv64
UNAME_RELEASE = 5.5.0-0.rc5.git0.1.1.riscv64.fc32.riscv64
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1 SMP Mon Jan 6 17:31:22 UTC 2020
CMake Error at cmake/modules/GetHostTriple.cmake:24 (message):
  Failed to execute /builddir/build/BUILD/llvm-7.0.1.src/cmake/config.guess
Call Stack (most recent call first):
  cmake/config-ix.cmake:360 (get_host_triple)
  CMakeLists.txt:600 (include)
-- Configuring incomplete, errors occurred!
See also "/builddir/build/BUILD/llvm-7.0.1.src/_build/CMakeFiles/CMakeOutput.log".
See also "/builddir/build/BUILD/llvm-7.0.1.src/_build/CMakeFiles/CMakeError.log".
error: Bad exit status from /var/tmp/rpm-tmp.Nw2ezm (%build)
RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.Nw2ezm (%build)
Child return code was: 1
EXCEPTION: [Error()]
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/mockbuild/trace_decorator.py", line 95, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.8/site-packages/mockbuild/util.py", line 746, in do_with_status
    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/llvm7.0.spec