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Add extern flag to avoid multiple symbol errors on Mac os X
[ghc-hetmet.git]
/
rts
/
sm
/
GC.h
diff --git
a/rts/sm/GC.h
b/rts/sm/GC.h
index
913df24
..
5e2e3a5
100644
(file)
--- a/
rts/sm/GC.h
+++ b/
rts/sm/GC.h
@@
-39,7
+39,7
@@
extern SpinLock gc_alloc_block_sync;
#endif
#if defined(PROF_SPIN) && defined(THREADED_RTS)
-StgWord64 whitehole_spin;
+extern StgWord64 whitehole_spin;
#endif
#define WORK_UNIT_WORDS 128