mpi/Makefile.am: add missing HWLOC_CFLAGS to AM_CFLAGS (Thanks to Keisuke Fukuda for reporting the bug)

mpi/Makefile.am

@@ -67,7 +67,7 @@ NVCCFLAGS += -I$(top_srcdir)/include/ -I$(top_builddir)/include
 	$(NVCC) $< -c -o $@ --compiler-options -fno-strict-aliasing  $(NVCCFLAGS) -I$(top_srcdir)/include/  -I$(top_builddir)/include/
 endif
 
-AM_CFLAGS = -Wall $(STARPU_CUDA_CPPFLAGS) $(STARPU_OPENCL_CPPFLAGS) $(FXT_CFLAGS) $(MAGMA_CFLAGS)
+AM_CFLAGS = -Wall $(STARPU_CUDA_CPPFLAGS) $(STARPU_OPENCL_CPPFLAGS) $(FXT_CFLAGS) $(MAGMA_CFLAGS) $(HWLOC_CFLAGS)
 LIBS = $(top_builddir)/src/libstarpu-@STARPU_EFFECTIVE_VERSION@.la @LIBS@ $(FXT_LIBS) $(MAGMA_LIBS)
 AM_CPPFLAGS = -I$(top_srcdir)/include/ -I$(top_srcdir)/mpi/ -I$(top_srcdir)/src/  -I$(top_srcdir)/examples/ -I$(top_builddir)/src -I$(top_builddir)/include -I$(top_srcdir)/mpi/include -I$(top_srcdir)/mpi/src
 AM_LDFLAGS = $(STARPU_CUDA_LDFLAGS) $(STARPU_OPENCL_LDFLAGS)