added missing #ifdef around #include "thread_mpi.h"

Due to the the missing #ifdef mdrun was not compiling with compilers
that don't like thread_mpi.h (e.g. Cray compiler).

Change-Id: Ibf980b46aaf56b81fffec5ada7cb3d93492a2220

diff --git a/src/gmxlib/shift_util.c b/src/gmxlib/shift_util.c
index 201b432e87a20d0ab4cfd3966f50977cea416573..176077a36e2fd9248bdda4784e2f5e79668cb8e2 100644 (file)
--- a/src/gmxlib/shift_util.c
+++ b/src/gmxlib/shift_util.c
@@ -52,7 +52,9 @@
 #include "pppm.h"
 #include "gmxfio.h"
 
+#ifdef GMX_THREADS
 #include "thread_mpi.h"
+#endif
 
 #define p2(x) ((x)*(x))
 #define p3(x) ((x)*(x)*(x))