enable building python files for gnulinux
diff --git a/CMSIS/DSP/PythonWrapper/setup.py b/CMSIS/DSP/PythonWrapper/setup.py
index 7884518..eacd231 100644
--- a/CMSIS/DSP/PythonWrapper/setup.py
+++ b/CMSIS/DSP/PythonWrapper/setup.py
@@ -14,7 +14,7 @@
   # since the visual compiler and the win platform are
   # not supported by default in arm_math.h
 else:
-  cflags = ["-Wno-unused-variable","-Wno-implicit-function-declaration",config.cflags]
+  cflags = ["-Wno-unused-variable","-Wno-implicit-function-declaration",config.cflags,"-D__GNUC_PYTHON__"]
 
 transform = glob.glob(os.path.join(ROOT,"Source","TransformFunctions","*.c"))
 #transform.remove(os.path.join(ROOT,"Source","TransformFunctions","arm_dct4_init_q15.c"))
@@ -82,4 +82,4 @@
         "Programming Language :: Python",
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
-    ])
\ No newline at end of file
+    ])