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-rw-r--r--src/make.configuration.defn2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/make.configuration.defn b/src/make.configuration.defn
index a8db886..fbafb98 100644
--- a/src/make.configuration.defn
+++ b/src/make.configuration.defn
@@ -2,7 +2,7 @@
# $Header$
# make sure that the HDF5 Stream Virtual File Driver is available
-stream_support := $(shell grep '\#define H5_HAVE_STREAM 1' $(HDF5_INC_DIRS)/H5pubconf.h)
+stream_support := $(shell grep -s '\#define H5_HAVE_STREAM 1' $(HDF5_INC_DIRS)/H5pubconf.h)
ifeq ($(strip $(stream_support)),)
$(error "IOStreamedHDF5 requires an HDF5 installation with built-in Stream Virtual File Driver. Please reconfigure with an appropriate HDF5 installation or remove IOStreamedHDF5 from ThornList !")