diff -Nur meshlab-2016.12.orig/src/meshlabplugins/filter_csg/filter_csg.pro meshlab-2016.12/src/meshlabplugins/filter_csg/filter_csg.pro
--- meshlab-2016.12.orig/src/meshlabplugins/filter_csg/filter_csg.pro	2016-12-23 21:24:59.000000000 +1100
+++ meshlab-2016.12/src/meshlabplugins/filter_csg/filter_csg.pro	2016-12-26 14:08:10.753341652 +1100
@@ -20,7 +20,5 @@
 win32-msvc2010:LIBS		 += ../../external/lib/win32-msvc2008/mpirxx.lib ../../external/lib/win32-msvc2008/mpir.lib
 win32-msvc2012:LIBS		 += ../../external/lib/win32-msvc2008/mpirxx.lib ../../external/lib/win32-msvc2008/mpir.lib
 win32-msvc2015:LIBS		 += ../../external/lib/win32-msvc2015/mpirxx.lib ../../external/lib/win32-msvc2015/mpir.lib
-linux-g++:INCLUDEPATH += ../../external/inc/linux-g++/mpir-2.4.0
-linux-g++:LIBS += ../../external/lib/linux-g++/libmpirxx.a ../../external/lib/linux-g++/libmpir.a
-linux-g++-64:INCLUDEPATH += ../../external/inc/linux-g++/mpir-2.4.0
-linux-g++-64:LIBS += ../../external/lib/linux-g++-64/libmpirxx.a ../../external/lib/linux-g++-64/libmpir.a
+linux-g++:LIBS += -lmpirxx -lmpir
+linux-g++-64:LIBS += -lmpirxx -lmpir