Update setup.py

Author: arvigj

setup.py

@@ -48,7 +48,8 @@ def build_extension(self, ext):
         cmake_args = ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=' + extdir,
                       '-DPYTHON_EXECUTABLE=' + sys.executable,
                       '-DPYTHON_INCLUDE_DIR=' + python_include_directory,
-                      '-DPOLYSOLVE_WITH_SPECTRA=OFF']
+                      '-DPOLYSOLVE_WITH_SPECTRA=OFF',
+                      '-DPOLYSOLVE_WITH_AMGCL=OFF']
 
         cfg = 'Debug' if self.debug else 'Release'
         build_args = ['--config', cfg]