diff --git a/srcpkgs/freecad/patches/002-execinfo.patch b/srcpkgs/freecad/patches/002-execinfo.patch
index 046fe8c487b..ea34e483e6e 100644
--- a/srcpkgs/freecad/patches/002-execinfo.patch
+++ b/srcpkgs/freecad/patches/002-execinfo.patch
@@ -1,30 +1,30 @@
 --- src/App/Application.cpp	2018-04-06 10:48:37.000000000 +0200
 +++ src/App/Application.cpp	2018-04-22 15:04:11.876136151 +0200
 @@ -1063,7 +1063,9 @@
- #endif
- 
- #if defined(FC_OS_LINUX)
-+#ifdef __GLIBC__
- #include <execinfo.h>
-+#endif
- #include <dlfcn.h>
- #include <cxxabi.h>
- 
+ #endif
+ 
+ #if defined(FC_OS_LINUX)
++#ifdef __GLIBC__
+ #include <execinfo.h>
++#endif
+ #include <dlfcn.h>
+ #include <cxxabi.h>
+ 
 @@ -1075,6 +1077,7 @@
- // This function produces a stack backtrace with demangled function & method names.
- void printBacktrace(size_t skip=0)
- {
-+#ifdef __GLIBC__
-     void *callstack[128];
-     size_t nMaxFrames = sizeof(callstack) / sizeof(callstack[0]);
-     size_t nFrames = backtrace(callstack, nMaxFrames);
+ // This function produces a stack backtrace with demangled function & method names.
+ void printBacktrace(size_t skip=0)
+ {
++#ifdef __GLIBC__
+     void *callstack[128];
+     size_t nMaxFrames = sizeof(callstack) / sizeof(callstack[0]);
+     size_t nFrames = backtrace(callstack, nMaxFrames);
 @@ -1105,6 +1108,9 @@
-     }
- 
-     free(symbols);
-+#else
-+    std::cerr << "sorry, no backtrace on musl libc";
-+#endif
- }
- #endif
- 
+     }
+ 
+     free(symbols);
++#else
++    std::cerr << "sorry, no backtrace on musl libc";
++#endif
+ }
+ #endif
+ 
diff --git a/srcpkgs/freecad/patches/041-boost-1.69.patch b/srcpkgs/freecad/patches/041-boost-1.69.patch
new file mode 100644
index 00000000000..29080308fb9
--- /dev/null
+++ b/srcpkgs/freecad/patches/041-boost-1.69.patch
@@ -0,0 +1,1979 @@
+https://freecadweb.org/tracker/view.php?id=3653
+https://github.com/FreeCAD/FreeCAD/commit/f898eafd64f88902ea1916b01303705b3baa2c46
+
+--- CMakeLists.txt.orig	2018-04-06 08:48:37 UTC
++++ CMakeLists.txt
+@@ -594,7 +594,7 @@ endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+     SET(_boost_TEST_VERSIONS ${Boost_ADDITIONAL_VERSIONS})
+ 
+     find_package(Boost ${BOOST_MIN_VERSION}
+-        COMPONENTS filesystem program_options regex signals system thread REQUIRED)
++        COMPONENTS filesystem program_options regex system thread REQUIRED)
+ 
+     IF(NOT Boost_FOUND)
+         MESSAGE(FATAL_ERROR "========================================\n"
+@@ -602,7 +602,6 @@ endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+                             " * filesystem\n"
+                             " * program_options\n"
+                             " * regex\n"
+-                            " * signals\n"
+                             " * system\n"
+                             " * thread\n"
+                             "========================================\n")
+@@ -1074,7 +1073,7 @@ ENDIF(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ IF(MSVC)
+ 	# set default compiler settings
+ 	SET (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /EHa")
+-	SET (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DFC_DEBUG /Zm128")
++	SET (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DFC_DEBUG /Zm128 /bigobj")
+ 	# set default libs
+ 	SET (CMAKE_C_STANDARD_LIBRARIES "kernel32.lib user32.lib gdi32.lib winspool.lib SHFolder.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib winmm.lib comsupp.lib Ws2_32.lib dbghelp.lib ")
+ 	set (CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES}")
+--- src/App/Application.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/App/Application.cpp
+@@ -120,7 +120,6 @@
+ 
+ #include <boost/tokenizer.hpp>
+ #include <boost/token_functions.hpp>
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ #include <boost/version.hpp>
+ #include <QDir>
+--- src/App/Application.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/Application.h
+@@ -25,7 +25,7 @@
+ #ifndef APP_APPLICATION_H
+ #define APP_APPLICATION_H
+ 
+-#include <boost/signal.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include <vector>
+ 
+@@ -99,27 +99,27 @@ class AppExport Application (public)
+     /** @name Signals of the Application */
+     //@{
+     /// signal on new Document
+-    boost::signal<void (const Document&)> signalNewDocument;
++    boost::signals2::signal<void (const Document&)> signalNewDocument;
+     /// signal on document getting deleted
+-    boost::signal<void (const Document&)> signalDeleteDocument;
++    boost::signals2::signal<void (const Document&)> signalDeleteDocument;
+     /// signal on already deleted Document
+-    boost::signal<void ()> signalDeletedDocument;
++    boost::signals2::signal<void ()> signalDeletedDocument;
+     /// signal on relabeling Document (user name)
+-    boost::signal<void (const Document&)> signalRelabelDocument;
++    boost::signals2::signal<void (const Document&)> signalRelabelDocument;
+     /// signal on renaming Document (internal name)
+-    boost::signal<void (const Document&)> signalRenameDocument;
++    boost::signals2::signal<void (const Document&)> signalRenameDocument;
+     /// signal on activating Document
+-    boost::signal<void (const Document&)> signalActiveDocument;
++    boost::signals2::signal<void (const Document&)> signalActiveDocument;
+     /// signal on saving Document
+-    boost::signal<void (const Document&)> signalSaveDocument;
++    boost::signals2::signal<void (const Document&)> signalSaveDocument;
+     /// signal on starting to restore Document
+-    boost::signal<void (const Document&)> signalStartRestoreDocument;
++    boost::signals2::signal<void (const Document&)> signalStartRestoreDocument;
+     /// signal on restoring Document
+-    boost::signal<void (const Document&)> signalFinishRestoreDocument;
++    boost::signals2::signal<void (const Document&)> signalFinishRestoreDocument;
+     /// signal on undo in document
+-    boost::signal<void (const Document&)> signalUndoDocument;
++    boost::signals2::signal<void (const Document&)> signalUndoDocument;
+     /// signal on redo in document
+-    boost::signal<void (const Document&)> signalRedoDocument;
++    boost::signals2::signal<void (const Document&)> signalRedoDocument;
+     //@}
+ 
+ 
+@@ -129,16 +129,16 @@ class AppExport Application (public)
+      */
+     //@{
+     /// signal on new Object
+-    boost::signal<void (const App::DocumentObject&)> signalNewObject;
+-    //boost::signal<void (const App::DocumentObject&)>     m_sig;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalNewObject;
++    //boost::signals2::signal<void (const App::DocumentObject&)>     m_sig;
+     /// signal on deleted Object
+-    boost::signal<void (const App::DocumentObject&)> signalDeletedObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalDeletedObject;
+     /// signal on changed Object
+-    boost::signal<void (const App::DocumentObject&, const App::Property&)> signalChangedObject;
++    boost::signals2::signal<void (const App::DocumentObject&, const App::Property&)> signalChangedObject;
+     /// signal on relabeled Object
+-    boost::signal<void (const App::DocumentObject&)> signalRelabelObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalRelabelObject;
+     /// signal on activated Object
+-    boost::signal<void (const App::DocumentObject&)> signalActivatedObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalActivatedObject;
+     //@}
+ 
+     /** @name Signals of property changes
+@@ -147,11 +147,11 @@ class AppExport Application (public)
+      */
+     //@{
+     /// signal on adding a dynamic property
+-    boost::signal<void (const App::Property&)> signalAppendDynamicProperty;
++    boost::signals2::signal<void (const App::Property&)> signalAppendDynamicProperty;
+     /// signal on about removing a dynamic property
+-    boost::signal<void (const App::Property&)> signalRemoveDynamicProperty;
++    boost::signals2::signal<void (const App::Property&)> signalRemoveDynamicProperty;
+     /// signal on about changing the editor mode of a property
+-    boost::signal<void (const App::Property&)> signalChangePropertyEditor;
++    boost::signals2::signal<void (const App::Property&)> signalChangePropertyEditor;
+     //@}
+ 
+ 
+--- src/App/Document.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/Document.h
+@@ -37,7 +37,7 @@
+ #include <stack>
+ #include <functional>
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ namespace Base {
+     class Writer;
+@@ -113,40 +113,40 @@ class AppExport Document : public App::PropertyContain
+     /** @name Signals of the document */
+     //@{
+     /// signal on new Object
+-    boost::signal<void (const App::DocumentObject&)> signalNewObject;
+-    //boost::signal<void (const App::DocumentObject&)>     m_sig;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalNewObject;
++    //boost::signals2::signal<void (const App::DocumentObject&)>     m_sig;
+     /// signal on deleted Object
+-    boost::signal<void (const App::DocumentObject&)> signalDeletedObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalDeletedObject;
+     /// signal on changed Object
+-    boost::signal<void (const App::DocumentObject&, const App::Property&)> signalChangedObject;
++    boost::signals2::signal<void (const App::DocumentObject&, const App::Property&)> signalChangedObject;
+     /// signal on relabeled Object
+-    boost::signal<void (const App::DocumentObject&)> signalRelabelObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalRelabelObject;
+     /// signal on activated Object
+-    boost::signal<void (const App::DocumentObject&)> signalActivatedObject;
++    boost::signals2::signal<void (const App::DocumentObject&)> signalActivatedObject;
+     /// signal on created object
+-    boost::signal<void (const App::DocumentObject&, Transaction*)> signalTransactionAppend;
++    boost::signals2::signal<void (const App::DocumentObject&, Transaction*)> signalTransactionAppend;
+     /// signal on removed object
+-    boost::signal<void (const App::DocumentObject&, Transaction*)> signalTransactionRemove;
++    boost::signals2::signal<void (const App::DocumentObject&, Transaction*)> signalTransactionRemove;
+     /// signal on undo
+-    boost::signal<void (const App::Document&)> signalUndo;
++    boost::signals2::signal<void (const App::Document&)> signalUndo;
+     /// signal on redo
+-    boost::signal<void (const App::Document&)> signalRedo;
++    boost::signals2::signal<void (const App::Document&)> signalRedo;
+     /** signal on load/save document
+      * this signal is given when the document gets streamed.
+      * you can use this hook to write additional information in
+      * the file (like the Gui::Document it does).
+      */
+-    boost::signal<void (Base::Writer   &)> signalSaveDocument;
+-    boost::signal<void (Base::XMLReader&)> signalRestoreDocument;
+-    boost::signal<void (const std::vector<App::DocumentObject*>&,
++    boost::signals2::signal<void (Base::Writer   &)> signalSaveDocument;
++    boost::signals2::signal<void (Base::XMLReader&)> signalRestoreDocument;
++    boost::signals2::signal<void (const std::vector<App::DocumentObject*>&,
+                         Base::Writer   &)> signalExportObjects;
+-    boost::signal<void (const std::vector<App::DocumentObject*>&,
++    boost::signals2::signal<void (const std::vector<App::DocumentObject*>&,
+                         Base::Writer   &)> signalExportViewObjects;
+-    boost::signal<void (const std::vector<App::DocumentObject*>&,
++    boost::signals2::signal<void (const std::vector<App::DocumentObject*>&,
+                         Base::XMLReader&)> signalImportObjects;
+-    boost::signal<void (const std::vector<App::DocumentObject*>&, Base::Reader&,
++    boost::signals2::signal<void (const std::vector<App::DocumentObject*>&, Base::Reader&,
+                         const std::map<std::string, std::string>&)> signalImportViewObjects;
+-    boost::signal<void (const App::Document&)> signalRecomputed;
++    boost::signals2::signal<void (const App::Document&)> signalRecomputed;
+     //@}
+ 
+     /** @name File handling of the document */
+--- src/App/DocumentObject.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/App/DocumentObject.cpp
+@@ -38,7 +38,7 @@
+ #include "DocumentObjectExtension.h"
+ #include "GeoFeatureGroupExtension.h"
+ #include <App/DocumentObjectPy.h>
+-#include <boost/signals/connection.hpp>
++#include <boost/signals2/connection.hpp>
+ #include <boost/bind.hpp>
+ 
+ using namespace App;
+--- src/App/DocumentObject.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/DocumentObject.h
+@@ -33,7 +33,7 @@
+ #include <CXX/Objects.hxx>
+ 
+ #include <bitset>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ namespace App
+ {
+@@ -282,9 +282,9 @@ class AppExport DocumentObject: public App::Transactio
+     App::Document* _pDoc;
+ 
+     // Connections to track relabeling of document and document objects
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection onRelabledDocumentConnection;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection onRelabledObjectConnection;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection onDeletedObjectConnection;
++    boost::signals2::scoped_connection onRelabledDocumentConnection;
++    boost::signals2::scoped_connection onRelabledObjectConnection;
++    boost::signals2::scoped_connection onDeletedObjectConnection;
+ 
+     /// Old label; used for renaming expressions
+     std::string oldLabel;
+--- src/App/DocumentObserver.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/App/DocumentObserver.cpp
+@@ -27,7 +27,6 @@
+ # include <sstream>
+ #endif
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include "Application.h"
+--- src/App/DocumentObserver.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/DocumentObserver.h
+@@ -25,7 +25,7 @@
+ #define APP_DOCUMENTOBSERVER_H
+ 
+ #include <Base/BaseClass.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <set>
+ 
+ namespace App
+@@ -157,7 +157,7 @@ class AppExport DocumentObserver (protected)
+ 
+ private:
+     App::Document* _document;
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectApplicationCreatedDocument;
+     Connection connectApplicationDeletedDocument;
+     Connection connectDocumentCreatedObject;
+--- src/App/DocumentObserverPython.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/DocumentObserverPython.h
+@@ -26,7 +26,7 @@
+ 
+ #include <CXX/Objects.hxx>
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ 
+ namespace App
+@@ -74,7 +74,7 @@ class AppExport DocumentObserverPython (private)
+     Py::Object inst;
+     static std::vector<DocumentObserverPython*> _instances;
+ 
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectApplicationCreatedDocument;
+     Connection connectApplicationDeletedDocument;
+     Connection connectApplicationRelabelDocument;
+--- src/App/MergeDocuments.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/MergeDocuments.h
+@@ -24,7 +24,7 @@
+ #ifndef APP_MERGEDOCUMENTS_H
+ #define APP_MERGEDOCUMENTS_H
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <Base/Persistence.h>
+ 
+ namespace zipios {
+@@ -57,7 +57,7 @@ class AppExport MergeDocuments : public Base::Persiste
+     App::Document* appdoc;
+     std::vector<App::DocumentObject*> objects;
+     std::map<std::string, std::string> nameMap;
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectExport;
+     Connection connectImport;
+ };
+--- src/App/PreCompiled.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/PreCompiled.h
+@@ -71,7 +71,7 @@
+ #include <random>
+ 
+ // Boost
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ #include <boost/regex.hpp>
+ 
+--- src/App/PropertyExpressionEngine.h.orig	2018-04-06 08:48:37 UTC
++++ src/App/PropertyExpressionEngine.h
+@@ -25,7 +25,7 @@
+ 
+ #include <boost/unordered/unordered_map.hpp>
+ #include <boost/function.hpp>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/graph/adjacency_list.hpp>
+ #include <boost/graph/topological_sort.hpp>
+ #include <App/Property.h>
+@@ -125,7 +125,7 @@ class AppExport PropertyExpressionEngine : public App:
+     void slotObjectDeleted(const DocumentObject &obj);
+     
+     ///signal called when a expression was changed 
+-    boost::signal<void (const App::ObjectIdentifier &)> expressionChanged; 
++    boost::signals2::signal<void (const App::ObjectIdentifier &)> expressionChanged; 
+ 
+     void onDocumentRestored();
+ 
+--- src/Base/Tools.h.orig	2018-04-06 08:48:37 UTC
++++ src/Base/Tools.h
+@@ -30,7 +30,7 @@
+ #include <iostream>
+ #include <vector>
+ #include <string>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <QString>
+ 
+ namespace Base
+@@ -166,17 +166,14 @@ class ObjectStatusLocker (private)
+ // ----------------------------------------------------------------------------
+ 
+ class ConnectionBlocker {
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
+-    bool b;
+-    Connection& c;
++    typedef boost::signals2::connection Connection;
++    typedef boost::signals2::shared_connection_block ConnectionBlock;
++    ConnectionBlock blocker;
+ 
+ public:
+-    ConnectionBlocker(Connection& c) : c(c) {
+-        b = c.blocked();
+-        c.block(true);
++    ConnectionBlocker(Connection& c) : blocker(c) {
+     }
+     ~ConnectionBlocker() {
+-        c.block(b);
+     }
+ };
+ 
+--- src/Gui/Action.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Action.cpp
+@@ -24,7 +24,7 @@
+ #include "PreCompiled.h"
+ 
+ #ifndef _PreComp_
+-# include <boost/signals.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ # include <QAbstractItemView>
+ # include <QActionEvent>
+--- src/Gui/Application.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Application.cpp
+@@ -25,7 +25,7 @@
+ 
+ #ifndef _PreComp_
+ # include "InventorAll.h"
+-# include <boost/signals.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ # include <sstream>
+ # include <stdexcept>
+--- src/Gui/Application.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Application.h
+@@ -88,33 +88,33 @@ class GuiExport Application  (public)
+     /** @name Signals of the Application */
+     //@{
+     /// signal on new Document
+-    boost::signal<void (const Gui::Document&)> signalNewDocument;
++    boost::signals2::signal<void (const Gui::Document&)> signalNewDocument;
+     /// signal on deleted Document
+-    boost::signal<void (const Gui::Document&)> signalDeleteDocument;
++    boost::signals2::signal<void (const Gui::Document&)> signalDeleteDocument;
+     /// signal on relabeling Document
+-    boost::signal<void (const Gui::Document&)> signalRelabelDocument;
++    boost::signals2::signal<void (const Gui::Document&)> signalRelabelDocument;
+     /// signal on renaming Document
+-    boost::signal<void (const Gui::Document&)> signalRenameDocument;
++    boost::signals2::signal<void (const Gui::Document&)> signalRenameDocument;
+     /// signal on activating Document
+-    boost::signal<void (const Gui::Document&)> signalActiveDocument;
++    boost::signals2::signal<void (const Gui::Document&)> signalActiveDocument;
+     /// signal on new Object
+-    boost::signal<void (const Gui::ViewProvider&)> signalNewObject;
++    boost::signals2::signal<void (const Gui::ViewProvider&)> signalNewObject;
+     /// signal on deleted Object
+-    boost::signal<void (const Gui::ViewProvider&)> signalDeletedObject;
++    boost::signals2::signal<void (const Gui::ViewProvider&)> signalDeletedObject;
+     /// signal on changed object property
+-    boost::signal<void (const Gui::ViewProvider&, const App::Property&)> signalChangedObject;
++    boost::signals2::signal<void (const Gui::ViewProvider&, const App::Property&)> signalChangedObject;
+     /// signal on renamed Object
+-    boost::signal<void (const Gui::ViewProvider&)> signalRelabelObject;
++    boost::signals2::signal<void (const Gui::ViewProvider&)> signalRelabelObject;
+     /// signal on activated Object
+-    boost::signal<void (const Gui::ViewProvider&)> signalActivatedObject;
++    boost::signals2::signal<void (const Gui::ViewProvider&)> signalActivatedObject;
+     /// signal on activated workbench
+-    boost::signal<void (const char*)> signalActivateWorkbench;
++    boost::signals2::signal<void (const char*)> signalActivateWorkbench;
+     /// signal on added workbench
+-    boost::signal<void (const char*)> signalAddWorkbench;
++    boost::signals2::signal<void (const char*)> signalAddWorkbench;
+     /// signal on removed workbench
+-    boost::signal<void (const char*)> signalRemoveWorkbench;
++    boost::signals2::signal<void (const char*)> signalRemoveWorkbench;
+     /// signal on activating view
+-    boost::signal<void (const Gui::MDIView*)> signalActivateView;
++    boost::signals2::signal<void (const Gui::MDIView*)> signalActivateView;
+     //@}
+ 
+     /** @name methods for Document handling */
+--- src/Gui/AutoSaver.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/AutoSaver.h
+@@ -29,7 +29,7 @@
+ #include <map>
+ #include <set>
+ #include <string>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ namespace App {
+ class Document;
+@@ -53,7 +53,7 @@ class AutoSaveProperty (public)
+ private:
+     void slotNewObject(const App::DocumentObject&);
+     void slotChangePropertyData(const App::Property&);
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection documentNew;
+     Connection documentMod;
+ };
+--- src/Gui/DAGView/DAGModel.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DAGView/DAGModel.cpp
+@@ -22,7 +22,6 @@
+ 
+ #include "PreCompiled.h"
+ #ifndef _PreComp_
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ #include <boost/graph/topological_sort.hpp>
+ #include <boost/graph/reverse_graph.hpp>
+--- src/Gui/DAGView/DAGModel.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DAGView/DAGModel.h
+@@ -26,7 +26,7 @@
+ #include <memory>
+ #include <vector>
+ 
+-#include <boost/signal.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include <QGraphicsScene>
+ #include <QBrush>
+@@ -86,7 +86,7 @@ namespace Gui
+     private:
+       Model(){}
+       //documentObject slots.
+-      typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++      typedef boost::signals2::connection Connection;
+       Connection connectNewObject;
+       Connection connectDelObject;
+       Connection connectChgObject;
+--- src/Gui/DlgDisplayPropertiesImp.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DlgDisplayPropertiesImp.h
+@@ -25,7 +25,7 @@
+ #define GUI_DIALOG_DLGDISPLAYPROPERTIES_IMP_H
+ 
+ #include <vector>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include "ui_DlgDisplayProperties.h"
+ #include "Selection.h"
+@@ -42,7 +42,7 @@ namespace Gui {
+   class Command;
+ 
+ namespace Dialog {
+-typedef boost::signals::connection DlgDisplayPropertiesImp_Connection;
++typedef boost::signals2::connection DlgDisplayPropertiesImp_Connection;
+ 
+ /**
+  * The DlgDisplayPropertiesImp class implements a dialog containing all available document
+@@ -79,7 +79,7 @@ private Q_SLOTS: (protected)
+ 
+ private:
+     void slotChangedObject(const Gui::ViewProvider&, const App::Property& Prop);
+-    void reject();
++    void reject();
+     void setDisplayModes(const std::vector<ViewProvider*>&);
+     void setMaterial(const std::vector<ViewProvider*>&);
+     void setColorPlot(const std::vector<ViewProvider*>&);
+--- src/Gui/Document.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Document.cpp
+@@ -31,7 +31,7 @@
+ # include <QKeySequence>
+ # include <qmessagebox.h>
+ # include <qstatusbar.h>
+-# include <boost/signals.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ # include <Inventor/actions/SoSearchAction.h>
+ # include <Inventor/nodes/SoSeparator.h>
+@@ -89,7 +89,7 @@ struct DocumentP
+     std::map<const App::DocumentObject*,ViewProviderDocumentObject*> _ViewProviderMap;
+     std::map<std::string,ViewProvider*> _ViewProviderMapAnnotation;
+ 
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectNewObject;
+     Connection connectDelObject;
+     Connection connectCngObject;
+@@ -105,6 +105,8 @@ struct DocumentP
+     Connection connectRedoDocument;
+     Connection connectTransactionAppend;
+     Connection connectTransactionRemove;
++    typedef boost::signals2::shared_connection_block ConnectionBlock;
++    ConnectionBlock connectActObjectBlocker;
+ };
+ 
+ } // namespace Gui
+@@ -138,6 +140,8 @@ Document::Document(App::Document* pcDocument,Applicati
+         (boost::bind(&Gui::Document::slotRelabelObject, this, _1));
+     d->connectActObject = pcDocument->signalActivatedObject.connect
+         (boost::bind(&Gui::Document::slotActivatedObject, this, _1));
++    d->connectActObjectBlocker = boost::signals2::shared_connection_block
++        (d->connectActObject, false);
+     d->connectSaveDocument = pcDocument->signalSaveDocument.connect
+         (boost::bind(&Gui::Document::Save, this, _1));
+     d->connectRestDocument = pcDocument->signalRestoreDocument.connect
+@@ -846,14 +850,14 @@ void Document::slotStartRestoreDocument(const App::Doc
+     if (d->_pcDocument != &doc)
+         return;
+     // disable this signal while loading a document
+-    d->connectActObject.block();
++    d->connectActObjectBlocker.block();
+ }
+ 
+ void Document::slotFinishRestoreDocument(const App::Document& doc)
+ {
+     if (d->_pcDocument != &doc)
+         return;
+-    d->connectActObject.unblock();
++    d->connectActObjectBlocker.unblock();
+     App::DocumentObject* act = doc.getActiveObject();
+     if (act) {
+         ViewProvider* viewProvider = getViewProvider(act);
+--- src/Gui/Document.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Document.h
+@@ -92,36 +92,36 @@ class GuiExport Document : public Base::Persistence (
+     /** @name Signals of the document */
+     //@{
+     /// signal on new Object
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalNewObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalNewObject;
+     /// signal on deleted Object
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalDeletedObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalDeletedObject;
+     /** signal on changed Object, the 2nd argument is the changed property
+         of the referenced document object, not of the view provider */
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&,
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&,
+                                 const App::Property&)>                   signalChangedObject;
+     /// signal on renamed Object
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalRelabelObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalRelabelObject;
+     /// signal on activated Object
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalActivatedObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalActivatedObject;
+     /// signal on entering in edit mode
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalInEdit;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalInEdit;
+     /// signal on leaving edit mode
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalResetEdit;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalResetEdit;
+     /// signal on changed Object, the 2nd argument is the highlite mode to use
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&,
+-                                const Gui::HighlightMode&,
+-                                bool)>                                   signalHighlightObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&,
++                                          const Gui::HighlightMode&,
++                                          bool)>                                   signalHighlightObject;
+     /// signal on changed Object, the 2nd argument is the highlite mode to use
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&,
+-                                const Gui::TreeItemMode&)>               signalExpandObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&,
++                                          const Gui::TreeItemMode&)>               signalExpandObject;
+     /// signal on scrolling to an object
+-    mutable boost::signal<void (const Gui::ViewProviderDocumentObject&)> signalScrollToObject;
++    mutable boost::signals2::signal<void (const Gui::ViewProviderDocumentObject&)> signalScrollToObject;
+     /// signal on undo Document
+-    mutable boost::signal<void (const Gui::Document& doc)> signalUndoDocument;
++    mutable boost::signals2::signal<void (const Gui::Document& doc)> signalUndoDocument;
+     /// signal on redo Document
+-    mutable boost::signal<void (const Gui::Document& doc)> signalRedoDocument;
++    mutable boost::signals2::signal<void (const Gui::Document& doc)> signalRedoDocument;
+     /// signal on deleting Document
+-    mutable boost::signal<void (const Gui::Document& doc)> signalDeleteDocument;
++    mutable boost::signals2::signal<void (const Gui::Document& doc)> signalDeleteDocument;
+     //@}
+ 
+     /** @name I/O of the document */
+--- src/Gui/DocumentModel.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DocumentModel.cpp
+@@ -26,7 +26,7 @@
+ #ifndef _PreComp_
+ # include <QApplication>
+ # include <algorithm>
+-# include <boost/signals.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ #endif
+ 
+--- src/Gui/DocumentObserver.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DocumentObserver.cpp
+@@ -27,7 +27,6 @@
+ # include <sstream>
+ #endif
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include "Application.h"
+@@ -87,19 +86,6 @@ void DocumentObserver::detachDocument()
+     this->connectDocumentUndo.disconnect();
+     this->connectDocumentRedo.disconnect();
+     this->connectDocumentDelete.disconnect();
+-}
+-
+-void DocumentObserver::enableNotifications(DocumentObserver::Notifications value)
+-{
+-    this->connectDocumentCreatedObject.block(!(value & Create));
+-    this->connectDocumentDeletedObject.block(!(value & Delete));
+-    this->connectDocumentChangedObject.block(!(value & Change));
+-    this->connectDocumentRelabelObject.block(!(value & Relabel));
+-    this->connectDocumentActivateObject.block(!(value & Activate));
+-    this->connectDocumentEditObject.block(!(value & Edit));
+-    this->connectDocumentResetObject.block(!(value & Reset));
+-    this->connectDocumentUndo.block(!(value & Undo));
+-    this->connectDocumentRedo.block(!(value & Redo));
+ }
+ 
+ void DocumentObserver::slotUndoDocument(const Document& /*Doc*/)
+--- src/Gui/DocumentObserver.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/DocumentObserver.h
+@@ -25,8 +25,7 @@
+ #define GUI_DOCUMENTOBSERVER_H
+ 
+ #include <Base/BaseClass.h>
+-#include <boost/signals.hpp>
+-#include <QFlags>
++#include <boost/signals2.hpp>
+ 
+ namespace App { class Property; }
+ namespace Gui
+@@ -45,21 +44,6 @@ class ViewProviderDocumentObject;
+ class GuiExport DocumentObserver
+ {
+ public:
+-    enum Notification {
+-        None = 0x0000,
+-        Create = 0x0001,
+-        Delete = 0x0002,
+-        Change = 0x0004,
+-        Relabel = 0x0008,
+-        Activate = 0x0010,
+-        Edit = 0x0020,
+-        Reset = 0x0040,
+-        Undo = 0x0080,
+-        Redo = 0x0100,
+-        All = 0x01ff
+-    };
+-    Q_DECLARE_FLAGS(Notifications, Notification)
+-
+     /// Constructor
+     DocumentObserver();
+     virtual ~DocumentObserver();
+@@ -72,9 +56,6 @@ class GuiExport DocumentObserver (public)
+      * is not longer observed then.
+      */
+     void detachDocument();
+-    /** Activates the connection depending on the given value.
+-     */
+-    void enableNotifications(Notifications value);
+ 
+ private:
+     /** Notifies when an object has been created. */
+@@ -100,7 +81,7 @@ class GuiExport DocumentObserver (public)
+     virtual void slotDeleteDocument(const Document& Doc);
+ 
+ private:
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::scoped_connection Connection;
++    typedef boost::signals2::scoped_connection Connection;
+     Connection connectDocumentCreatedObject;
+     Connection connectDocumentDeletedObject;
+     Connection connectDocumentChangedObject;
+--- src/Gui/ExpressionBinding.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ExpressionBinding.h
+@@ -27,7 +27,7 @@
+ #include <App/ObjectIdentifier.h>
+ #include <boost/shared_ptr.hpp>
+ #include <QLabel>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ namespace App {
+ class Expression;
+@@ -75,7 +75,7 @@ class GuiExport ExpressionBinding (protected)
+     int iconHeight;
+ 
+     void expressionChange(const App::ObjectIdentifier& id);
+-    boost::signals::scoped_connection connection;
++    boost::signals2::scoped_connection connection;
+     bool m_autoApply;
+ };
+ 
+--- src/Gui/GraphvizView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/GraphvizView.h
+@@ -26,7 +26,7 @@
+ 
+ #include "MDIView.h"
+ #include <boost/shared_ptr.hpp>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ 
+ class QGraphicsScene;
+@@ -84,7 +84,7 @@ private Q_SLOTS: (private)
+     GraphvizWorker* thread;
+     int nPending;
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::scoped_connection Connection;
++    typedef boost::signals2::scoped_connection Connection;
+     Connection recomputeConnection;
+     Connection undoConnection;
+     Connection redoConnection;
+--- src/Gui/MDIView.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/MDIView.cpp
+@@ -24,7 +24,7 @@
+ #include "PreCompiled.h"
+ 
+ #ifndef _PreComp_
+-# include <boost/signals.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ # include <qapplication.h>
+ # include <qregexp.h>
+--- src/Gui/MDIView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/MDIView.h
+@@ -150,7 +150,7 @@ protected Q_SLOTS: (private)
+     Qt::WindowStates wstate;
+     // list of active objects of this view
+     ActiveObjectList ActiveObjects;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectDelObject; //remove active object upon delete.
+ };
+ 
+--- src/Gui/MainWindow.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/MainWindow.cpp
+@@ -51,7 +51,6 @@
+ # include <QWhatsThis>
+ #endif
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ // FreeCAD Base header
+--- src/Gui/ManualAlignment.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ManualAlignment.cpp
+@@ -49,7 +49,6 @@
+ # include <Inventor/sensors/SoNodeSensor.h>
+ #endif
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include <App/Document.h>
+--- src/Gui/ManualAlignment.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ManualAlignment.h
+@@ -30,7 +30,7 @@
+ #include <Gui/Application.h>
+ #include <Gui/Document.h>
+ #include <Gui/ViewProviderDocumentObject.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class SbVec3f;
+ class SoPickedPoint;
+@@ -244,7 +244,7 @@ Q_SIGNALS: (private)
+ 
+     static ManualAlignment* _instance;
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectApplicationDeletedDocument;
+     Connection connectDocumentDeletedObject;
+ 
+--- src/Gui/MergeDocuments.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/MergeDocuments.h
+@@ -24,7 +24,7 @@
+ #ifndef GUI_MERGEDOCUMENTS_H
+ #define GUI_MERGEDOCUMENTS_H
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <Base/Persistence.h>
+ 
+ namespace zipios {
+@@ -57,7 +57,7 @@ class GuiExport MergeDocuments : public Base::Persiste
+     Gui::Document* document;
+     std::vector<App::DocumentObject*> objects;
+     std::map<std::string, std::string> nameMap;
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectExport;
+     Connection connectImport;
+ };
+--- src/Gui/Placement.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Placement.h
+@@ -28,7 +28,7 @@
+ #include <Gui/TaskView/TaskView.h>
+ #include <Base/Placement.h>
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ 
+ class QSignalMapper;
+@@ -84,7 +84,7 @@ Q_SIGNALS:
+ 
+ private:
+     typedef Gui::LocationInterfaceComp<Ui_Placement> Ui_PlacementComp;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Ui_PlacementComp* ui;
+     QSignalMapper* signalMapper;
+     Connection connectAct;
+--- src/Gui/PreCompiled.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/PreCompiled.h
+@@ -72,7 +72,7 @@
+ #include <bitset>
+ 
+ // Boost
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ #include <boost/program_options.hpp>
+ #include <boost/tuple/tuple.hpp>
+--- src/Gui/ProjectView.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ProjectView.cpp
+@@ -24,7 +24,6 @@
+ #include "PreCompiled.h"
+ 
+ #ifndef _PreComp_
+-# include <boost/signals.hpp>
+ # include <boost/bind.hpp>
+ # include <QAction>
+ # include <QActionGroup>
+--- src/Gui/PropertyView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/PropertyView.h
+@@ -28,7 +28,7 @@
+ 
+ #include "DockWindow.h"
+ #include "Selection.h"
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class QPixmap;
+ class QTabWidget;
+@@ -65,15 +65,15 @@ class PropertyView : public QWidget, public Gui::Selec
+     Gui::PropertyEditor::PropertyEditor* propertyEditorView;
+     Gui::PropertyEditor::PropertyEditor* propertyEditorData;
+ 
+-public Q_SLOTS:
+-    /// Stores a preference for the last tab selected
+-    void tabChanged(int index);
+-
++public Q_SLOTS:
++    /// Stores a preference for the last tab selected
++    void tabChanged(int index);
++
+ protected:
+     void changeEvent(QEvent *e);
+ 
+ private:
+-    void onSelectionChanged(const SelectionChanges& msg);
++    void onSelectionChanged(const SelectionChanges& msg);
+     void slotChangePropertyData(const App::DocumentObject&, const App::Property&);
+     void slotChangePropertyView(const Gui::ViewProvider&, const App::Property&);
+     void slotAppendDynamicProperty(const App::Property&);
+@@ -83,7 +83,7 @@ public Q_SLOTS: (private)
+ private:
+     struct PropInfo;
+     struct PropFind;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectPropData;
+     Connection connectPropView;
+     Connection connectPropAppend;
+--- src/Gui/Selection.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Selection.cpp
+@@ -26,7 +26,6 @@
+ #ifndef _PreComp_
+ # include <assert.h>
+ # include <string>
+-# include <boost/signals.hpp>
+ # include <boost/bind.hpp>
+ # include <QApplication>
+ # include <QString>
+@@ -54,7 +53,7 @@
+ using namespace Gui;
+ using namespace std;
+ 
+-SelectionObserver::SelectionObserver()
++SelectionObserver::SelectionObserver() : blocker(connectSelection, false)
+ {
+     attachSelection();
+ }
+@@ -68,9 +67,9 @@ bool SelectionObserver::blockConnection(bool block)
+ {
+     bool ok = connectSelection.blocked();
+     if (block)
+-        connectSelection.block();
++        blocker.block();
+     else
+-        connectSelection.unblock();
++        blocker.unblock();
+     return ok;
+ }
+ 
+--- src/Gui/Selection.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Selection.h
+@@ -30,6 +30,7 @@
+ #include <vector>
+ #include <list>
+ #include <map>
++#include <boost/signals2.hpp>
+ #include <CXX/Objects.hxx>
+ 
+ #include <Base/Observer.h>
+@@ -143,8 +144,9 @@ class GuiExport SelectionObserver (private)
+     virtual void onSelectionChanged(const SelectionChanges& msg) = 0;
+ 
+ private:
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectSelection;
++    boost::signals2::shared_connection_block blocker;
+ };
+ 
+ /**
+@@ -290,7 +292,7 @@ class GuiExport SelectionSingleton : public Base::Subj
+     };
+ 
+     /// signal on new object
+-    boost::signal<void (const SelectionChanges& msg)> signalSelectionChanged;
++    boost::signals2::signal<void (const SelectionChanges& msg)> signalSelectionChanged;
+ 
+     /** Returns a vector of selection objects
+      * If no document name is given the objects of the active are returned.
+--- src/Gui/TaskView/TaskAppearance.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/TaskView/TaskAppearance.h
+@@ -26,7 +26,7 @@
+ 
+ #include "TaskView.h"
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ 
+ class Ui_TaskAppearance;
+@@ -38,7 +38,7 @@ class Property;
+ namespace Gui {
+ class ViewProvider;
+ namespace TaskView {
+-typedef boost::signals::connection TaskAppearance_Connection;
++typedef boost::signals2::connection TaskAppearance_Connection;
+ 
+ class TaskAppearance : public TaskBox, public Gui::SelectionSingleton::ObserverType
+ {
+--- src/Gui/TaskView/TaskSelectLinkProperty.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/TaskView/TaskSelectLinkProperty.h
+@@ -26,7 +26,6 @@
+ 
+ #include "TaskView.h"
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
+ #include <App/PropertyLinks.h>
+ 
+ 
+--- src/Gui/TaskView/TaskView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/TaskView/TaskView.h
+@@ -29,7 +29,7 @@
+ #include <map>
+ #include <string>
+ #include <vector>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <QScrollArea>
+ 
+ #if !defined (QSINT_ACTIONPANEL)
+@@ -51,7 +51,7 @@ class CombiView;
+ }
+ namespace TaskView {
+ 
+-typedef boost::signals::connection Connection;
++typedef boost::signals2::connection Connection;
+ class TaskEditControl;
+ class TaskDialog;
+ 
+--- src/Gui/Tree.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Tree.cpp
+@@ -24,7 +24,6 @@
+ #include "PreCompiled.h"
+ 
+ #ifndef _PreComp_
+-# include <boost/signals.hpp>
+ # include <boost/bind.hpp>
+ # include <QAction>
+ # include <QActionGroup>
+--- src/Gui/Tree.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/Tree.h
+@@ -184,7 +184,7 @@ class DocumentItem : public QTreeWidgetItem (private)
+     const Gui::Document* pDocument;
+     std::map<std::string,DocumentObjectItemsPtr> ObjectMap;
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectNewObject;
+     Connection connectDelObject;
+     Connection connectChgObject;
+@@ -222,7 +222,7 @@ class DocumentObjectItem : public QTreeWidgetItem (pr
+     void slotChangeStatusTip(const QString&);
+ 
+ private:
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     int previousStatus;
+     Gui::ViewProviderDocumentObject* viewObject;
+     Connection connectIcon;
+--- src/Gui/ViewProvider.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ViewProvider.h
+@@ -29,7 +29,7 @@
+ #include <string>
+ #include <bitset>
+ #include <QIcon>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include <App/TransactionalObject.h>
+ #include <Base/Vector3D.h>
+@@ -199,11 +199,11 @@ class GuiExport ViewProvider : public App::Transaction
+     /** @name Signals of the view provider */
+     //@{
+     /// signal on icon change
+-    boost::signal<void ()> signalChangeIcon;
++    boost::signals2::signal<void ()> signalChangeIcon;
+     /// signal on tooltip change
+-    boost::signal<void (const QString&)> signalChangeToolTip;
++    boost::signals2::signal<void (const QString&)> signalChangeToolTip;
+     /// signal on status tip change
+-    boost::signal<void (const QString&)> signalChangeStatusTip;
++    boost::signals2::signal<void (const QString&)> signalChangeStatusTip;
+     //@}
+ 
+     /** update the content of the ViewProvider
+--- src/Gui/ViewProviderOriginGroup.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ViewProviderOriginGroup.h
+@@ -23,8 +23,6 @@
+ #ifndef VIEWPROVIDERORIGINGROUP_H_JIXBOPA7
+ #define VIEWPROVIDERORIGINGROUP_H_JIXBOPA7
+ 
+-#include <boost/signals.hpp>
+-
+ #include "ViewProviderGeoFeatureGroup.h"
+ #include "ViewProviderOriginGroupExtension.h"
+ 
+--- src/Gui/ViewProviderOriginGroupExtension.h.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ViewProviderOriginGroupExtension.h
+@@ -56,8 +56,8 @@ class GuiExport ViewProviderOriginGroupExtension : pub
+     std::vector<App::DocumentObject*> constructChildren (
+             const std::vector<App::DocumentObject*> &children ) const;
+ 
+-    boost::signals::connection connectChangedObjectApp;
+-    boost::signals::connection connectChangedObjectGui;
++    boost::signals2::connection connectChangedObjectApp;
++    boost::signals2::connection connectChangedObjectGui;
+ };
+ 
+ typedef ViewProviderExtensionPythonT<Gui::ViewProviderOriginGroupExtension> ViewProviderOriginGroupExtensionPython;
+--- src/Gui/ViewProviderPythonFeature.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Gui/ViewProviderPythonFeature.cpp
+@@ -30,7 +30,6 @@
+ # include <QFileInfo>
+ # include <QMenu>
+ # include <QPixmap>
+-# include <boost/signals.hpp>
+ # include <boost/bind.hpp>
+ # include <Inventor/nodes/SoDrawStyle.h>
+ # include <Inventor/nodes/SoMaterial.h>
+--- src/Mod/Drawing/Gui/TaskOrthoViews.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Drawing/Gui/TaskOrthoViews.cpp
+@@ -641,11 +641,12 @@ void OrthoViews::del_view(int rel_x, int rel_y)       
+ 
+     if (num > 0)
+     {
+-        connectDocumentDeletedObject.block();
+-        views[num]->deleteme();
+-        delete views[num];
+-        views.erase(views.begin() + num);
+-        connectDocumentDeletedObject.unblock();
++        {
++            boost::signals2::shared_connection_block blocker(connectDocumentDeletedObject);
++            views[num]->deleteme();
++            delete views[num];
++            views.erase(views.begin() + num);
++        }
+ 
+         min_r_x = max_r_x = 0;
+         min_r_y = max_r_y = 0;
+@@ -667,14 +668,13 @@ void OrthoViews::del_view(int rel_x, int rel_y)       
+ 
+ void OrthoViews::del_all()
+ {
+-    connectDocumentDeletedObject.block();
++    boost::signals2::shared_connection_block blocker(connectDocumentDeletedObject);
+     for (int i = views.size() - 1; i >= 0; i--)          // count downwards to delete from back
+     {
+         views[i]->deleteme();
+         delete views[i];
+         views.pop_back();
+     }
+-    connectDocumentDeletedObject.unblock();
+ }
+ 
+ int OrthoViews::is_Ortho(int rel_x, int rel_y)              // is the view at r_x, r_y an ortho or axo one?
+--- src/Mod/Drawing/Gui/TaskOrthoViews.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Drawing/Gui/TaskOrthoViews.h
+@@ -30,9 +30,9 @@
+ 
+ #include <gp_Ax2.hxx>
+ #include <vector>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+-#include <Mod/Drawing/App/FeatureViewPart.h>
++#include <Mod/Drawing/App/FeatureViewPart.h>
+ 
+ 
+ 
+@@ -148,8 +148,8 @@ class OrthoViews (private)
+ 
+     bool    hidden, smooth;
+     bool    autodims;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection connectDocumentDeletedObject;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection connectApplicationDeletedDocument;
++    boost::signals2::scoped_connection connectDocumentDeletedObject;
++    boost::signals2::scoped_connection connectApplicationDeletedDocument;
+ };
+ 
+ 
+--- src/Mod/Fem/Gui/TaskPostBoxes.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Fem/Gui/TaskPostBoxes.h
+@@ -30,7 +30,6 @@
+ #include <Base/Parameter.h>
+ #include <App/PropertyLinks.h>
+ #include "ViewProviderFemPostFunction.h"
+-#include <boost/signals.hpp>
+ 
+ class QComboBox;
+ class Ui_TaskPostDisplay;
+@@ -139,15 +138,15 @@ class TaskPostBox : public Gui::TaskView::TaskBox { (p
+     ~TaskPostBox();
+ 
+     virtual void applyPythonCode() = 0;
+-    virtual bool isGuiTaskOnly() {return false;}; //return true if only gui properties are manipulated
++    virtual bool isGuiTaskOnly() {return false;} //return true if only gui properties are manipulated
+ 
+ protected:
+-    App::DocumentObject*                getObject() {return m_object;};
++    App::DocumentObject*                getObject() {return m_object;}
+     template<typename T>
+-    T* getTypedObject() {return static_cast<T*>(m_object);};
+-    Gui::ViewProviderDocumentObject*    getView() {return m_view;};
++    T* getTypedObject() {return static_cast<T*>(m_object);}
++    Gui::ViewProviderDocumentObject*    getView() {return m_view;}
+     template<typename T>
+-    T* getTypedView() {return static_cast<T*>(m_view);};
++    T* getTypedView() {return static_cast<T*>(m_view);}
+ 
+     bool autoApply();
+     void recompute();
+@@ -203,7 +202,7 @@ class TaskPostDisplay : public TaskPostBox (public)
+     ~TaskPostDisplay();
+ 
+     virtual void applyPythonCode();
+-    virtual bool isGuiTaskOnly() {return true;};
++    virtual bool isGuiTaskOnly() {return true;}
+ 
+ private Q_SLOTS:
+     void on_Representation_activated(int i);
+--- src/Mod/Fem/Gui/ViewProviderFemPostFunction.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Fem/Gui/ViewProviderFemPostFunction.h
+@@ -28,29 +28,8 @@
+ #include <Mod/Fem/App/FemPostFunction.h>
+ #include <Inventor/SbMatrix.h>
+ #include <QWidget>
++#include <boost/signals2.hpp>
+ 
+-
+-#if defined(signals) && defined(QOBJECTDEFS_H) && \
+-  !defined(QT_MOC_CPP)
+-#  undef signals
+-#  define signals signals
+-#endif
+-
+-#include <boost/signal.hpp>
+-namespace boost
+-{
+-  namespace signalslib = signals;
+-}
+-
+-#if defined(signals) && defined(QOBJECTDEFS_H) && \
+-  !defined(QT_MOC_CPP)
+-#  undef signals
+-// Restore the macro definition of "signals", as it was
+-// defined by Qt's <qobjectdefs.h>.
+-#  define signals protected
+-#endif
+-
+-
+ class SoScale;
+ class SoSurroundScale;
+ class SoTransformManip;
+@@ -70,19 +49,19 @@ class FemGuiExport FunctionWidget : public QWidget {
+ 
+     Q_OBJECT
+ public:
+-    FunctionWidget() {};
+-    virtual ~FunctionWidget() {};
++    FunctionWidget() {}
++    virtual ~FunctionWidget() {}
+ 
+     virtual void applyPythonCode() = 0;
+     virtual void setViewProvider(ViewProviderFemPostFunction* view);
+     void onObjectsChanged(const App::DocumentObject& obj, const App::Property&);
+ 
+ protected:
+-    ViewProviderFemPostFunction* getView()  {return m_view;};
+-    Fem::FemPostFunction*        getObject(){return m_object;};
++    ViewProviderFemPostFunction* getView()  {return m_view;}
++    Fem::FemPostFunction*        getObject(){return m_object;}
+ 
+-    bool blockObjectUpdates() {return m_block;};
+-    void setBlockObjectUpdates(bool val) {m_block = val;};
++    bool blockObjectUpdates() {return m_block;}
++    void setBlockObjectUpdates(bool val) {m_block = val;}
+ 
+     virtual void onChange(const App::Property& p) = 0;
+ 
+@@ -90,7 +69,7 @@ class FemGuiExport FunctionWidget : public QWidget {
+     bool                                        m_block;
+     ViewProviderFemPostFunction*                m_view;
+     Fem::FemPostFunction*                       m_object;
+-    boost::signalslib::scoped_connection        m_connection;
++    boost::signals2::scoped_connection          m_connection;
+ };
+ 
+ class FemGuiExport ViewProviderFemPostFunctionProvider : public Gui::ViewProviderDocumentObject
+--- src/Mod/Inspection/App/InspectionFeature.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Inspection/App/InspectionFeature.cpp
+@@ -35,7 +35,6 @@
+ #include <QFutureWatcher>
+ #include <QtConcurrentMap>
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include <Base/Console.h>
+--- src/Mod/Mesh/Gui/DlgEvaluateMeshImp.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Mesh/Gui/DlgEvaluateMeshImp.cpp
+@@ -31,7 +31,6 @@
+ #include "ui_DlgEvaluateMesh.h"
+ #include "DlgEvaluateSettings.h"
+ 
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include <Base/Interpreter.h>
+--- src/Mod/Mesh/Gui/MeshEditor.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Mesh/Gui/MeshEditor.h
+@@ -25,7 +25,7 @@
+ 
+ #include <QObject>
+ #include <Mod/Mesh/Gui/ViewProvider.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class SoCoordinate3;
+ class SoFaceSet;
+@@ -139,7 +139,7 @@ private Q_SLOTS:
+ 
+ private:
+     typedef std::vector<unsigned long> TBoundary;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+ 
+     static void fileHoleCallback(void * ud, SoEventCallback * n);
+     void createPolygons();
+--- src/Mod/PartDesign/App/Body.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/App/Body.h
+@@ -27,7 +27,7 @@
+ #include <App/PropertyStandard.h>
+ #include <Mod/Part/App/BodyBase.h>
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ namespace App {
+     class Origin;
+@@ -145,7 +145,7 @@ class PartDesignExport Body : public Part::BodyBase (
+     virtual void unsetupObject () override;
+ 
+ private:
+-    boost::signals::scoped_connection connection;
++    boost::signals2::scoped_connection connection;
+ };
+ 
+ } //namespace PartDesign
+--- src/Mod/PartDesign/Gui/TaskFeatureParameters.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskFeatureParameters.cpp
+@@ -49,7 +49,6 @@ TaskFeatureParameters::TaskFeatureParameters(PartDesig
+ {
+     Gui::Document* doc = vp->getDocument();
+     this->attachDocument(doc);
+-    this->enableNotifications(DocumentObserver::Delete);
+ }
+ 
+ void TaskFeatureParameters::slotDeletedObject(const Gui::ViewProviderDocumentObject& Obj)
+--- src/Mod/PartDesign/Gui/TaskHoleParameters.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskHoleParameters.h
+@@ -121,7 +121,7 @@ private Q_SLOTS: (private)
+ 
+ private:
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::scoped_connection Connection;
++    typedef boost::signals2::scoped_connection Connection;
+     Connection connectPropChanged;
+ 
+     std::unique_ptr<Observer> observer;
+--- src/Mod/PartDesign/Gui/TaskPrimitiveParameters.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskPrimitiveParameters.cpp
+@@ -183,7 +183,6 @@ TaskBoxPrimitives::TaskBoxPrimitives(ViewProviderPrimi
+ 
+     Gui::Document* doc = vp->getDocument();
+     this->attachDocument(doc);
+-    this->enableNotifications(DocumentObserver::Delete);
+ 
+     //show the parts coordinate system axis for selection
+     PartDesign::Body * body = PartDesign::Body::findBodyOf(vp->getObject());
+--- src/Mod/PartDesign/Gui/TaskPrimitiveParameters.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskPrimitiveParameters.h
+@@ -48,8 +48,6 @@ class ViewProvider;
+ 
+ namespace PartDesignGui { 
+ 
+-namespace s = boost::signals;
+-
+ class TaskBoxPrimitives : public Gui::TaskView::TaskBox,
+                           public Gui::DocumentObserver
+ {
+--- src/Mod/PartDesign/Gui/TaskTransformedMessages.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskTransformedMessages.h
+@@ -25,10 +25,10 @@
+ #define GUI_TASKVIEW_TaskTransformedMessages_H
+ 
+ #include <Gui/TaskView/TaskView.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class Ui_TaskTransformedMessages;
+-typedef boost::signals::connection Connection;
++typedef boost::signals2::connection Connection;
+ 
+ namespace App {
+ class Property;
+--- src/Mod/PartDesign/Gui/TaskTransformedParameters.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/TaskTransformedParameters.cpp
+@@ -76,7 +76,6 @@ TaskTransformedParameters::TaskTransformedParameters(V
+     if (TransformedView) {
+         Gui::Document* doc = TransformedView->getDocument();
+         this->attachDocument(doc);
+-        this->enableNotifications(DocumentObserver::Delete);
+     }
+ }
+ 
+--- src/Mod/PartDesign/Gui/ViewProviderBody.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/ViewProviderBody.h
+@@ -96,8 +96,8 @@ class PartDesignGuiExport ViewProviderBody : public Pa
+ private:
+     static const char* BodyModeEnum[];
+ 
+-    boost::signals::connection connectChangedObjectApp;
+-    boost::signals::connection connectChangedObjectGui;
++    boost::signals2::connection connectChangedObjectApp;
++    boost::signals2::connection connectChangedObjectGui;
+ };
+ 
+ 
+--- src/Mod/PartDesign/Gui/ViewProviderTransformed.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/ViewProviderTransformed.h
+@@ -47,7 +47,7 @@ class PartDesignGuiExport ViewProviderTransformed : pu
+     virtual bool onDelete(const std::vector<std::string> &);
+ 
+     /// signals if the transformation contains errors
+-    boost::signal<void (QString msg)> signalDiagnosis;
++    boost::signals2::signal<void (QString msg)> signalDiagnosis;
+ 
+     // The feature name of the subclass
+     std::string featureName;
+--- src/Mod/PartDesign/Gui/WorkflowManager.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/PartDesign/Gui/WorkflowManager.h
+@@ -23,7 +23,7 @@
+ #ifndef WORKFLOWMANAGER_H_PB7A5GCM
+ #define WORKFLOWMANAGER_H_PB7A5GCM
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <map>
+ 
+ namespace App {
+@@ -98,9 +98,9 @@ class PartDesignGuiExport WorkflowManager { (private)
+ private:
+     std::map<const App::Document*, Workflow> dwMap;
+ 
+-    boost::signals::connection connectNewDocument;
+-    boost::signals::connection connectFinishRestoreDocument;
+-    boost::signals::connection connectDeleteDocument;
++    boost::signals2::connection connectNewDocument;
++    boost::signals2::connection connectFinishRestoreDocument;
++    boost::signals2::connection connectDeleteDocument;
+ 
+     static WorkflowManager* _instance;
+ };
+--- src/Mod/Part/App/PreCompiled.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Part/App/PreCompiled.h
+@@ -63,7 +63,7 @@
+ #include <map>
+ 
+ // Boost
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include <boost/tuple/tuple.hpp>
+@@ -73,10 +73,10 @@
+ #include <boost/program_options.hpp>
+ //namespace po = boost::program_options;
+ 
+-#include <boost/filesystem/path.hpp>
+-#include <boost/filesystem/operations.hpp>
+-#include <boost/filesystem/exception.hpp>
+-
++#include <boost/filesystem/path.hpp>
++#include <boost/filesystem/operations.hpp>
++#include <boost/filesystem/exception.hpp>
++
+ #include "OpenCascadeAll.h"
+ 
+ #elif defined(FC_OS_WIN32)
+--- src/Mod/Part/Gui/DlgBooleanOperation.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Part/Gui/DlgBooleanOperation.h
+@@ -25,7 +25,7 @@
+ 
+ #include <Gui/TaskView/TaskDialog.h>
+ #include <Gui/TaskView/TaskView.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class QTreeWidgetItem;
+ 
+@@ -35,7 +35,7 @@ class Property;
+ }
+ namespace PartGui {
+ 
+-typedef boost::signals::connection Connection;
++typedef boost::signals2::connection Connection;
+ class Ui_DlgBooleanOperation;
+ class DlgBooleanOperation : public QWidget
+ {
+--- src/Mod/Part/Gui/DlgFilletEdges.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Part/Gui/DlgFilletEdges.cpp
+@@ -43,7 +43,7 @@
+ # include <QItemSelection>
+ # include <QItemSelectionModel>
+ # include <QTimer>
+-# include <boost/signal.hpp>
++# include <boost/signals2.hpp>
+ # include <boost/bind.hpp>
+ # include <Inventor/actions/SoSearchAction.h>
+ # include <Inventor/details/SoLineDetail.h>
+@@ -206,7 +206,7 @@ namespace PartGui {
+         std::vector<int> edge_ids;
+         TopTools_IndexedMapOfShape all_edges;
+         TopTools_IndexedMapOfShape all_faces;
+-        typedef boost::signals::connection Connection;
++        typedef boost::signals2::connection Connection;
+         Connection connectApplicationDeletedObject;
+         Connection connectApplicationDeletedDocument;
+ 
+--- src/Mod/Part/Gui/TaskAttacher.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Part/Gui/TaskAttacher.h
+@@ -131,7 +131,7 @@ private Q_SLOTS: (private)
+     Attacher::SuggestResult lastSuggestResult;
+     bool completed;
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectDelObject;
+ };
+ 
+--- src/Mod/Part/Gui/TaskFaceColors.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Part/Gui/TaskFaceColors.cpp
+@@ -43,7 +43,7 @@
+ # include <Inventor/nodes/SoSeparator.h>
+ #endif
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/bind.hpp>
+ 
+ #include "ui_TaskFaceColors.h"
+@@ -92,7 +92,7 @@ namespace PartGui {
+ class FaceColors::Private
+ {
+ public:
+-    typedef boost::signals::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Ui_TaskFaceColors* ui;
+     Gui::View3DInventorViewer* view;
+     ViewProviderPartExt* vp;
+--- src/Mod/Sandbox/App/DocumentProtector.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sandbox/App/DocumentProtector.h
+@@ -25,7 +25,6 @@
+ #define SANDBOX_DOCUMENTPROTECTOR_H
+ 
+ #include <string>
+-#include <boost/signals.hpp>
+ #include <boost/bind.hpp>
+ #include <App/DocumentObserver.h>
+ 
+@@ -49,9 +48,9 @@ class SandboxAppExport DocumentProtector : public App:
+     void recompute();
+ 
+ private:
+-    /** Checks if the given document is about to be closed */
+-    void slotDeletedDocument(const App::Document& Doc);
+-    void validate();
++    /** Checks if the given document is about to be closed */
++    void slotDeletedDocument(const App::Document& Doc);
++    void validate();
+ };
+ 
+ class AbstractCallable
+@@ -80,8 +79,8 @@ class Callable : public AbstractCallable (public)
+ 
+     virtual void operator()() const
+     {
+-        T* v = static_cast<T*>(obj);
+-        (v->*method)();
++        T* v = static_cast<T*>(obj);
++        (v->*method)();
+     }
+ 
+ private:
+@@ -101,8 +100,8 @@ class CallableWithArgs : public AbstractCallable (pub
+ 
+     virtual void operator()() const
+     {
+-        T* v = static_cast<T*>(obj);
+-        (v->*method)(arg);
++        T* v = static_cast<T*>(obj);
++        (v->*method)(arg);
+     }
+ 
+ private:
+@@ -122,7 +121,7 @@ class SandboxAppExport DocumentObjectProtector (publi
+     void purgeTouched();
+ 
+ private:
+-    void validate();
++    void validate();
+ 
+ private:
+     App::DocumentObject* obj;
+--- src/Mod/Sketcher/App/PropertyConstraintList.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/App/PropertyConstraintList.h
+@@ -32,7 +32,7 @@
+ #include <App/Property.h>
+ #include <Mod/Part/App/Geometry.h>
+ #include "Constraint.h"
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <boost/unordered/unordered_map.hpp>
+ 
+ namespace Base {
+@@ -129,8 +129,8 @@ class SketcherExport PropertyConstraintList : public A
+ 
+     typedef std::pair<int, const Constraint*> ConstraintInfo ;
+ 
+-    boost::signal<void (const std::map<App::ObjectIdentifier, App::ObjectIdentifier> &)> signalConstraintsRenamed;
+-    boost::signal<void (const std::set<App::ObjectIdentifier> &)> signalConstraintsRemoved;
++    boost::signals2::signal<void (const std::map<App::ObjectIdentifier, App::ObjectIdentifier> &)> signalConstraintsRenamed;
++    boost::signals2::signal<void (const std::set<App::ObjectIdentifier> &)> signalConstraintsRemoved;
+ 
+     static std::string getConstraintName(const std::string &name, int i);
+ 
+--- src/Mod/Sketcher/App/SketchObject.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/App/SketchObject.h
+@@ -23,7 +23,7 @@
+ #ifndef SKETCHER_SKETCHOBJECT_H
+ #define SKETCHER_SKETCHOBJECT_H
+ 
+-#include <boost/signals/connection.hpp>
++#include <boost/signals2/connection.hpp>
+ #include <App/PropertyStandard.h>
+ #include <App/PropertyFile.h>
+ #include <App/FeaturePython.h>
+@@ -397,8 +397,8 @@ class SketcherExport SketchObject : public Part::Part2
+     std::vector<int> lastConflicting;
+     std::vector<int> lastRedundant;
+ 
+-    boost::signals::scoped_connection constraintsRenamedConn;
+-    boost::signals::scoped_connection constraintsRemovedConn;
++    boost::signals2::scoped_connection constraintsRenamedConn;
++    boost::signals2::scoped_connection constraintsRemovedConn;
+ 
+     bool AutoLockTangencyAndPerpty(Constraint* cstr, bool bForce = false, bool bLock = true);
+ };
+--- src/Mod/Sketcher/Gui/TaskDlgEditSketch.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/TaskDlgEditSketch.h
+@@ -32,9 +32,9 @@
+ #include "TaskSketcherGeneral.h"
+ #include "TaskSketcherMessages.h"
+ #include "TaskSketcherSolverAdvanced.h"
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+-typedef boost::signals::connection Connection;
++typedef boost::signals2::connection Connection;
+ 
+ namespace SketcherGui {
+ 
+--- src/Mod/Sketcher/Gui/TaskSketcherConstrains.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/TaskSketcherConstrains.h
+@@ -26,7 +26,7 @@
+ 
+ #include <Gui/TaskView/TaskView.h>
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <QListWidget>
+ 
+ namespace App {
+@@ -91,7 +91,7 @@ public Q_SLOTS:
+ protected:
+     void changeEvent(QEvent *e);
+     ViewProviderSketch *sketchView;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectionConstraintsChanged;
+ 
+ private:
+--- src/Mod/Sketcher/Gui/TaskSketcherElements.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/TaskSketcherElements.h
+@@ -26,7 +26,7 @@
+ 
+ #include <Gui/TaskView/TaskView.h>
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <QListWidget>
+ 
+ namespace App {
+@@ -115,7 +115,7 @@ public Q_SLOTS: (protected)
+     void changeEvent(QEvent *e);
+     void leaveEvent ( QEvent * event );
+     ViewProviderSketch *sketchView;
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectionElementsChanged;
+ 
+ private:
+--- src/Mod/Sketcher/Gui/TaskSketcherMessages.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/TaskSketcherMessages.h
+@@ -26,10 +26,10 @@
+ 
+ #include <Gui/TaskView/TaskView.h>
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ class Ui_TaskSketcherMessages;
+-typedef boost::signals::connection Connection;
++typedef boost::signals2::connection Connection;
+ 
+ namespace App {
+ class Property;
+--- src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.h
+@@ -26,7 +26,6 @@
+ 
+ #include <Gui/TaskView/TaskView.h>
+ #include <Gui/Selection.h>
+-#include <boost/signals.hpp>
+ 
+ class Ui_TaskSketcherSolverAdvanced;
+ 
+--- src/Mod/Sketcher/Gui/ViewProviderSketch.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Sketcher/Gui/ViewProviderSketch.h
+@@ -33,11 +33,10 @@
+ #include <Gui/Selection.h>
+ #include <Gui/GLPainter.h>
+ #include <App/Part.h>
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ #include <QCoreApplication>
+ #include <Gui/Document.h>
+ 
+-#include <boost/signals.hpp>
+ 
+ class TopoDS_Shape;
+ class TopoDS_Face;
+@@ -234,13 +233,13 @@ class SketcherGuiExport ViewProviderSketch : public Pa
+     friend struct ::EditData;
+ 
+     /// signals if the constraints list has changed
+-    boost::signal<void ()> signalConstraintsChanged;
++    boost::signals2::signal<void ()> signalConstraintsChanged;
+     /// signals if the sketch has been set up
+-    boost::signal<void (QString msg)> signalSetUp;
++    boost::signals2::signal<void (QString msg)> signalSetUp;
+     /// signals if the sketch has been solved
+-    boost::signal<void (QString msg)> signalSolved;
++    boost::signals2::signal<void (QString msg)> signalSolved;
+     /// signals if the elements list has changed
+-    boost::signal<void ()> signalElementsChanged;
++    boost::signals2::signal<void ()> signalElementsChanged;
+         
+ protected:
+     virtual bool setEdit(int ModNum);
+@@ -269,8 +268,8 @@ class SketcherGuiExport ViewProviderSketch : public Pa
+     void slotRedoDocument(const Gui::Document&);
+     
+ protected:
+-    boost::signals::connection connectUndoDocument;
+-    boost::signals::connection connectRedoDocument;
++    boost::signals2::connection connectUndoDocument;
++    boost::signals2::connection connectRedoDocument;
+     
+ 
+     /** @name Protected helpers for drawing constraint icons*/
+--- src/Mod/Spreadsheet/App/Sheet.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Spreadsheet/App/Sheet.h
+@@ -170,13 +170,13 @@ class SpreadsheetExport Sheet : public App::DocumentOb
+ 
+     // Signals
+ 
+-    boost::signal<void (App::CellAddress)> cellUpdated;
++    boost::signals2::signal<void (App::CellAddress)> cellUpdated;
+ 
+-    boost::signal<void (App::CellAddress)> cellSpanChanged;
++    boost::signals2::signal<void (App::CellAddress)> cellSpanChanged;
+ 
+-    boost::signal<void (int, int)> columnWidthChanged;
++    boost::signals2::signal<void (int, int)> columnWidthChanged;
+ 
+-    boost::signal<void (int, int)> rowHeightChanged;
++    boost::signals2::signal<void (int, int)> rowHeightChanged;
+ 
+     /** @name Access properties */
+     //@{
+@@ -296,8 +296,8 @@ class SpreadsheetExport Sheet : public App::DocumentOb
+     typedef std::map<std::string, SheetObserver* > ObserverMap;
+     ObserverMap observers;
+ 
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection onRelabledDocumentConnection;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection onRenamedDocumentConnection;
++    boost::signals2::scoped_connection onRelabledDocumentConnection;
++    boost::signals2::scoped_connection onRenamedDocumentConnection;
+ 
+     friend class SheetObserver;
+ 
+--- src/Mod/Spreadsheet/Gui/SheetModel.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Spreadsheet/Gui/SheetModel.h
+@@ -24,7 +24,7 @@
+ #define SHEETMODEL_H
+ 
+ #include <QAbstractTableModel>
+-#include <boost/signals/connection.hpp>
++#include <boost/signals2/connection.hpp>
+ #include <Mod/Spreadsheet/App/Utils.h>
+ #include <App/Range.h>
+ 
+@@ -52,7 +52,7 @@ class SheetModel : public QAbstractTableModel (public)
+ private:
+     void cellUpdated(App::CellAddress address);
+ 
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection cellUpdatedConnection;
++    boost::signals2::scoped_connection cellUpdatedConnection;
+     Spreadsheet::Sheet * sheet;
+     QColor aliasBgColor;
+     QColor textFgColor;
+--- src/Mod/Spreadsheet/Gui/SheetTableView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Spreadsheet/Gui/SheetTableView.h
+@@ -26,7 +26,7 @@
+ #include <QTableView>
+ #include <QHeaderView>
+ #include <QKeyEvent>
+-#include <boost/signals/connection.hpp>
++#include <boost/signals2/connection.hpp>
+ #include <Mod/Spreadsheet/App/Sheet.h>
+ #include <Mod/Spreadsheet/App/Utils.h>
+ 
+@@ -74,7 +74,7 @@ protected Q_SLOTS: (protected)
+     QModelIndex currentEditIndex;
+     Spreadsheet::Sheet * sheet;
+ 
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection cellSpanChangedConnection;
++    boost::signals2::scoped_connection cellSpanChangedConnection;
+ };
+ 
+ }
+--- src/Mod/Spreadsheet/Gui/SpreadsheetView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/Spreadsheet/Gui/SpreadsheetView.h
+@@ -98,9 +98,9 @@ protected Q_SLOTS: (protected)
+     Spreadsheet::Sheet * sheet;
+     SpreadsheetDelegate * delegate;
+     SheetModel * model;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection columnWidthChangedConnection;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection rowHeightChangedConnection;
+-    boost::BOOST_SIGNALS_NAMESPACE::scoped_connection positionChangedConnection;
++    boost::signals2::scoped_connection columnWidthChangedConnection;
++    boost::signals2::scoped_connection rowHeightChangedConnection;
++    boost::signals2::scoped_connection positionChangedConnection;
+ 
+     QMap<int, int> newColumnSizes;
+     QMap<int, int> newRowSizes;
+--- src/Mod/TechDraw/App/DrawPage.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/App/DrawPage.h
+@@ -24,7 +24,7 @@
+ #ifndef _DrawPage_h_
+ #define _DrawPage_h_
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include <App/DocumentObject.h>
+ #include <App/DocumentObjectGroup.h>
+@@ -59,7 +59,7 @@ class TechDrawExport DrawPage: public App::DocumentObj
+     int addView(App::DocumentObject *docObj);
+     int removeView(App::DocumentObject* docObj);
+     short mustExecute() const;
+-    boost::signal<void (const DrawPage*)> signalGuiPaint;
++    boost::signals2::signal<void (const DrawPage*)> signalGuiPaint;
+ 
+     /// returns the type name of the ViewProvider
+     virtual const char* getViewProviderName(void) const {
+--- src/Mod/TechDraw/App/DrawView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/App/DrawView.h
+@@ -23,7 +23,7 @@
+ #ifndef _DrawView_h_
+ #define _DrawView_h_
+ 
+-#include <boost/signals.hpp>
++#include <boost/signals2.hpp>
+ 
+ #include <QRectF>
+ 
+@@ -85,7 +85,7 @@ class TechDrawExport DrawView : public App::DocumentOb
+     virtual bool checkFit(DrawPage*) const;
+     virtual void setPosition(double x, double y);
+     bool keepUpdated(void);
+-    boost::signal<void (const DrawView*)> signalGuiPaint;
++    boost::signals2::signal<void (const DrawView*)> signalGuiPaint;
+     virtual double getScale(void) const;
+     void checkScale(void);
+     void requestPaint(void);
+--- src/Mod/TechDraw/Gui/MDIViewPage.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/MDIViewPage.cpp
+@@ -38,7 +38,7 @@
+     #include <QPrinter>
+     #include <QPrintDialog>
+     #include <QPrintPreviewDialog>
+-    #include <boost/signal.hpp>
++    #include <boost/signals2.hpp>
+     #include <boost/bind.hpp>
+ 
+ #endif  // #ifndef _PreComp_
+--- src/Mod/TechDraw/Gui/MDIViewPage.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/MDIViewPage.h
+@@ -118,7 +118,7 @@ public Q_SLOTS: (protected)
+     
+     void onDeleteObject(const App::DocumentObject& obj);
+ 
+-    typedef boost::BOOST_SIGNALS_NAMESPACE::connection Connection;
++    typedef boost::signals2::connection Connection;
+     Connection connectDeletedObject;
+ 
+ private:
+--- src/Mod/TechDraw/Gui/ViewProviderDrawingView.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/ViewProviderDrawingView.cpp
+@@ -25,7 +25,6 @@
+ #include "PreCompiled.h"
+ 
+ #ifndef _PreComp_
+-#include <boost/signal.hpp>
+ #include <boost/bind.hpp>
+ 
+ #endif
+--- src/Mod/TechDraw/Gui/ViewProviderDrawingView.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/ViewProviderDrawingView.h
+@@ -78,7 +78,7 @@ class TechDrawGuiExport ViewProviderDrawingView : publ
+     virtual TechDraw::DrawView* getViewObject() const;
+     
+     void onGuiRepaint(const TechDraw::DrawView* dv); 
+-    typedef boost::signals::scoped_connection Connection;
++    typedef boost::signals2::scoped_connection Connection;
+     Connection connectGuiRepaint;
+     
+ 
+--- src/Mod/TechDraw/Gui/ViewProviderPage.cpp.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/ViewProviderPage.cpp
+@@ -29,7 +29,6 @@
+ # include <QMenu>
+ # include <QTimer>
+ #include <QPointer>
+-#include <boost/signal.hpp>
+ #include <boost/bind.hpp>
+ 
+ #endif
+--- src/Mod/TechDraw/Gui/ViewProviderPage.h.orig	2018-04-06 08:48:37 UTC
++++ src/Mod/TechDraw/Gui/ViewProviderPage.h
+@@ -81,7 +81,7 @@ class TechDrawGuiExport ViewProviderPage : public Gui:
+ 
+     TechDraw::DrawPage* getDrawPage() const;
+     void onGuiRepaint(const TechDraw::DrawPage* dp); 
+-    typedef boost::signals::scoped_connection Connection;
++    typedef boost::signals2::scoped_connection Connection;
+     Connection connectGuiRepaint;
+ 
+     void unsetEdit(int ModNum);
diff --git a/srcpkgs/freecad/template b/srcpkgs/freecad/template
index 86ceeca3918..f143deea22d 100644
--- a/srcpkgs/freecad/template
+++ b/srcpkgs/freecad/template
@@ -5,7 +5,7 @@
 #  - python3: freecad code not yet ready for it, probably at 0.18
 pkgname=freecad
 version=0.17
-revision=6
+revision=7
 wrksrc="FreeCAD-${version}"
 build_style=cmake
 
@@ -16,8 +16,8 @@ configure_args="
  -DBUILD_QT5=OFF
  -DCMAKE_INSTALL_PREFIX=${_inst_prefix}
  -DCMAKE_INSTALL_LIBDIR=${_inst_prefix}/lib"
-hostmakedepends="pkg-config swig doxygen graphviz"
-makedepends="python-devel boost-devel boost-python libxerces-c-devel
+hostmakedepends="pkg-config swig doxygen graphviz dos2unix"
+makedepends="python-devel boost-devel libxerces-c-devel
  zlib-devel occt-devel vtk-devel hdf5-devel openmpi-devel libmed-devel eigen
  coin3-devel libshiboken-python-devel libspnav-devel pyside-tools liblz4-devel
  libpyside-python-devel python-matplotlib netcdf-devel jsoncpp-devel
@@ -34,6 +34,10 @@ homepage="https://freecadweb.org/"
 distfiles="https://github.com/FreeCAD/FreeCAD/archive/${version}.tar.gz"
 checksum=ae017393476b6dc7f1192bcaf91ceedc2f9b791f2495307ce7c45efadb5266fb
 
+post_extract() {
+	find $wrksrc -type f -exec dos2unix {} +
+}
+
 post_install() {
 	# AppHomePath is computed with binary's realpath:
 	# do not move binaries but symlink them instead.