Accomodate for setting a different CMAKE_GENERATOR in the environment.

This makes sure the right build utility is called, depending on the
value of the CMAKE_GENERATOR environment.

bindings/python/setup.py

@@ -134,7 +134,7 @@ def build_libraries():
         subprocess.check_call(["cmake", '-B', BUILD_DIR, "-DCMAKE_BUILD_TYPE=" + conf])
         os.chdir(BUILD_DIR)
         threads = os.getenv("THREADS", "4")
-        subprocess.check_call(["make", "-j" + threads])
+        subprocess.check_call(["cmake", "--build", ".", "-j" + threads])
     
         shutil.copy(LIBRARY_FILE, LIBS_DIR)
         try: