/builddir/build/BUILD/samba-4.10.16 
Setting out to                           : /builddir/build/BUILD/samba-4.10.16/bin 
Checking for 'gcc' (C compiler)          : Traceback (most recent call last):
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Scripting.py", line 159, in waf_entry_point
    run_commands()
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Scripting.py", line 255, in run_commands
    ctx = run_command(cmd_name)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Scripting.py", line 239, in run_command
    ctx.execute()
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Configure.py", line 159, in execute
    super(ConfigurationContext, self).execute()
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Context.py", line 204, in execute
    self.recurse([os.path.dirname(g_module.root_path)])
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Context.py", line 286, in recurse
    user_function(self)
  File "/builddir/build/BUILD/samba-4.10.16/wscript", line 142, in configure
    conf.RECURSE('lib/replace')
  File "./buildtools/wafsamba/samba_utils.py", line 65, in fun
    return f(*k, **kw)
  File "./buildtools/wafsamba/samba_utils.py", line 468, in RECURSE
    return ctx.recurse(relpath)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Context.py", line 286, in recurse
    user_function(self)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Utils.py", line 830, in wrap
    ret = fun(*k)
  File "/builddir/build/BUILD/samba-4.10.16/lib/replace/wscript", line 30, in configure
    conf.RECURSE('buildtools/wafsamba')
  File "./buildtools/wafsamba/samba_utils.py", line 65, in fun
    return f(*k, **kw)
  File "./buildtools/wafsamba/samba_utils.py", line 468, in RECURSE
    return ctx.recurse(relpath)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Context.py", line 286, in recurse
    user_function(self)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Utils.py", line 830, in wrap
    ret = fun(*k)
  File "/builddir/build/BUILD/samba-4.10.16/buildtools/wafsamba/wscript", line 228, in configure
    conf.load('compiler_c')
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Configure.py", line 271, in load
    func(self)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Tools/compiler_c.py", line 79, in configure
    conf.load(compiler)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Configure.py", line 271, in load
    func(self)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Tools/gcc.py", line 148, in configure
    conf.find_gcc()
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Configure.py", line 317, in fun
    return f(*k, **kw)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Tools/gcc.py", line 20, in find_gcc
    conf.get_cc_version(cc, gcc=True)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Configure.py", line 317, in fun
    return f(*k, **kw)
  File "/builddir/build/BUILD/samba-4.10.16/third_party/waf/waflib/Tools/c_config.py", line 1010, in get_cc_version
    cmd = cc + ['-dM', '-E', '-']
TypeError: unsupported operand type(s) for +: 'NoneType' and 'list'
error: Bad exit status from /var/tmp/rpm-tmp.9TkRag (%build)
    Bad exit status from /var/tmp/rpm-tmp.9TkRag (%build)
RPM build errors:
Child return code was: 1
EXCEPTION: [Error()]
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/util.py", line 600, 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 x86_64 --nodeps /builddir/build/SPECS/samba.spec