diff --git a/configure b/configure
index dcc3a55b..976f4ae0 100755
--- a/configure
+++ b/configure
@@ -3901,9 +3901,9 @@ fi
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-CFLAGS="-Wall -Wno-unused -O2"
+CFLAGS="-Wall -Wno-unused -g -O2"
 
-CXXFLAGS="-Wall -Wno-unused -O2 -std=c++11"
+CXXFLAGS="-Wall -Wno-unused -g -O2 -std=c++11"
 
 
 #-------------------------------------------------------------------------
diff --git a/configure.ac b/configure.ac
index 5a8e65f7..92289ded 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,8 +71,8 @@ AC_HEADER_STDC
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-AC_SUBST([CFLAGS],  ["-Wall -Wno-unused -O2"])
-AC_SUBST([CXXFLAGS],["-Wall -Wno-unused -O2 -std=c++11"])
+AC_SUBST([CFLAGS],  ["-Wall -Wno-unused -g -O2"])
+AC_SUBST([CXXFLAGS],["-Wall -Wno-unused -g -O2 -std=c++11"])
 
 #-------------------------------------------------------------------------
 # MCPPBS subproject list