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-rw-r--r--gcc/config/rs6000/mach.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/config/rs6000/mach.h b/gcc/config/rs6000/mach.h
index 65dc53d4bb0..dfa23e6032c 100644
--- a/gcc/config/rs6000/mach.h
+++ b/gcc/config/rs6000/mach.h
@@ -26,7 +26,7 @@ Boston, MA 02111-1307, USA. */
/* We don't define AIX under MACH; instead we define `unix'. */
#undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Drios -D_IBMR2 -Dunix -Asystem(unix) -Asystem(mach) -Acpu(rs6000) -Amachine(rs6000)"
+#define CPP_PREDEFINES "-Drios -D_IBMR2 -Dunix -Asystem=unix -Asystem=mach -Acpu=rs6000 -Amachine=rs6000"
/* Define different binder options for MACH. */
#undef LINK_SPEC