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--- a/src/mk/localdefs.in
+++ b/src/mk/localdefs.in
@@ -9,3 +9,4 @@
 LOCALCXXFLAGS = $(INCICONV) $(XAPIANCXXFLAGS) \
 	      -DRECOLL_PREFIX=\"$(RECOLL_PREFIX)\"
 
+CXXFLAGS = -g