X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FInstrumentation%2Fvertical_speed_indicator.cxx;h=f5991265107fded22a674b2a4bf5e6dc06ea4621;hb=0b9adf8854398461333eba43df18fa2f5c8231a1;hp=e062db010087e8f3a646a5282c750a99d0999967;hpb=0b04bf9cddab6c9ae62657d01f57898ee4fd5b7a;p=flightgear.git

diff --git a/src/Instrumentation/vertical_speed_indicator.cxx b/src/Instrumentation/vertical_speed_indicator.cxx
index e062db010..f59912651 100644
--- a/src/Instrumentation/vertical_speed_indicator.cxx
+++ b/src/Instrumentation/vertical_speed_indicator.cxx
@@ -3,12 +3,17 @@
 //
 // This file is in the Public Domain and comes with no warranty.
 
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
 #include <simgear/math/interpolater.hxx>
 
 #include "vertical_speed_indicator.hxx"
 #include <Main/fg_props.hxx>
 #include <Main/util.hxx>
 
+using std::string;
 
 VerticalSpeedIndicator::VerticalSpeedIndicator ( SGPropertyNode *node )
     : _internal_pressure_inhg(29.92),