(C_SWITCH_MACHINE): Define only if not __GNUC__.

diff --git a/src/m/ibmrt.h b/src/m/ibmrt.h
index c92df7e92f69b86f12178560b58ba8e1031e24cd..e0830f995b05388f4c515d967cb0f83fa2f6aa83 100644 (file)
--- a/src/m/ibmrt.h
+++ b/src/m/ibmrt.h
@@ -125,7 +125,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 /* Special switches to give the C compiler.  */
 
+#ifndef __GNUC__
 #define C_SWITCH_MACHINE -Dalloca=_Alloca
+#endif
 
 /* Don't attempt to relabel some of the data as text when dumping.
    It does not work because their virtual addresses are not consecutive.