diff --git a/compiler/fpcdefs.inc b/compiler/fpcdefs.inc
index 79befe3f29..fc41470b8c 100644
--- a/compiler/fpcdefs.inc
+++ b/compiler/fpcdefs.inc
@@ -74,6 +74,14 @@
   {$define cpurox}
 {$endif x86_64}
 
+{$ifdef ia64}
+  {$define cpuflags}
+  {$define cpu64bitalu}
+  {$define cpu64bitaddr}
+  {$define cpuextended}
+  {$define cpufloat128}
+{$endif ia64}
+
 {$ifdef alpha}
   {$define cpu64bitalu}
   {$define cpu64bitaddr}