X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fruntime%2Fprims%2FPrimArith.lc;fp=ghc%2Fruntime%2Fprims%2FPrimArith.lc;h=22646ef73b8ec259e519c7baea846082187d82ce;hb=989d1443a70e54d8c5f68d949d797a107ec03d86;hp=4cad02fa19908a8d5eae3912334eccab3a6a492b;hpb=1833e5efeaa769717a0ce44c1a1efb2e9e30186b;p=ghc-hetmet.git

diff --git a/ghc/runtime/prims/PrimArith.lc b/ghc/runtime/prims/PrimArith.lc
index 4cad02f..22646ef 100644
--- a/ghc/runtime/prims/PrimArith.lc
+++ b/ghc/runtime/prims/PrimArith.lc
@@ -7,6 +7,23 @@
 \begin{code}
 /* basic definitions, just as if this were a module */
 
+/* 
+  Sigh, ieee-flpt.h (which we need here) uses
+  __GLASGOW_HASKELL__ in a place or two to check
+  whether it is being included in a Haskell source file
+  or not. This is no longer the case! __GLASGOW_HASKELL__
+  is also defined when compiling .c files (C code that
+  depend on the RTS API needs to know this).
+  
+  An unfortunate state of affairs, but since this is
+  the only place where the two uses of __GLASGOW_HASKELL__
+  clash, we hack around and undefine it before including
+  the header file.    -- sof 8/98
+*/
+#ifdef __GLASGOW_HASKELL__
+#undef __GLASGOW_HASKELL__
+#endif
+
 #include "rtsdefs.h"
 \end{code}