Build system fixes for MsgPack

1 files changed, 8 insertions, 1 deletions

diff --git a/libcrystfel/src/image-msgpack.h b/libcrystfel/src/image-msgpack.h
index ad05d8fe..0449c718 100644
--- a/libcrystfel/src/image-msgpack.h
+++ b/libcrystfel/src/image-msgpack.h
@@ -29,6 +29,10 @@
 #ifndef IMAGE_MSGPACK_H
 #define IMAGE_MSGPACK_H
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include "datatemplate.h"
 
 #if defined(HAVE_MSGPACK)
@@ -55,7 +59,8 @@ static UNUSED int image_msgpack_read(struct image *image,
                                      void *data,
                                      size_t data_size)
 {
-	return 0;
+	ERROR("MessagePack is not supported in this installation.\n");
+	return 1;
 }
 
 static UNUSED ImageFeatureList *image_msgpack_read_peaks(const DataTemplate *dtempl,
@@ -63,6 +68,7 @@ static UNUSED ImageFeatureList *image_msgpack_read_peaks(const DataTemplate *dte
                                                          size_t data_size,
                                                          int half_pixel_shift)
 {
+	ERROR("MessagePack is not supported in this installation.\n");
 	return NULL;
 }
 
@@ -71,6 +77,7 @@ static UNUSED double image_msgpack_get_value(const char *name,
                                              size_t data_block_size,
                                              char *ptype)
 {
+	ERROR("MessagePack is not supported in this installation.\n");
 	*ptype = 'f';
 	return NAN;
 }