message: Fixed expression.
diff: @@ -151,8 +151,8 @@ class Configure:
  def configure_compiler(self):
  cmake_compiler_flags = []
  - cxx = os.getenv('CXX') if self.args.cxx is None else self.args.cxx.split(' ', 1)
  - cc = os.getenv('CC') if self.args.cc is None else self.args.cc.split(' ', 1)
  + cxx = (os.getenv('CXX') if self.args.cxx is None else self.args.cxx).split(' ', 1)
  + cc = (os.getenv('CC') if self.args.cc is None else self.args.cc).split(' ', 1)
  if cc:
  cmake_compiler_flags.append(f'-DCMAKE_C_COMPILER={cc[0]}')
  if 'clang' in os.path.basename(cc[0]):
  