diff --git a/src/build_models/plugin_auxingrowth.pro b/src/build_models/plugin_auxingrowth.pro
--- a/src/build_models/plugin_auxingrowth.pro
+++ b/src/build_models/plugin_auxingrowth.pro
@@ -38,7 +38,7 @@ TEMPLATE = lib
 
 unix {
  LIBS += -Llib -lvleaf
- QMAKE_CXXFLAGS += -I/usr/include/libxml2
+ QMAKE_CXXFLAGS += -fPIC -I/usr/include/libxml2
  QMAKE_LFLAGS += -fPIC
 }