From b312232b80ca8d5a1162d77f198783ec6792c705 Mon Sep 17 00:00:00 2001
From: jriegel <FreeCAD@juergen-riegel.net>
Date: Wed, 26 Jun 2013 23:20:09 +0200
Subject: [PATCH] Switch NetgenObject to inert if build without Netgen

---
 src/Mod/Fem/App/CMakeLists.txt               | 31 +++++++++++++++-----
 src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp | 13 ++++----
 src/Mod/Fem/Gui/CMakeLists.txt               |  4 +++
 src/Mod/Fem/Gui/Command.cpp                  |  6 ++++
 4 files changed, 41 insertions(+), 13 deletions(-)

diff --git a/src/Mod/Fem/App/CMakeLists.txt b/src/Mod/Fem/App/CMakeLists.txt
index 4c6c98589..48639d6f7 100755
--- a/src/Mod/Fem/App/CMakeLists.txt
+++ b/src/Mod/Fem/App/CMakeLists.txt
@@ -4,6 +4,10 @@ else(MSVC)
     add_definitions(-DHAVE_LIMITS_H -DHAVE_CONFIG_H)
 endif(MSVC)
 
+if(FREECAD_BUILD_FEM_NETGEN)
+    add_definitions(-DFCWithNetgen)
+endif(FREECAD_BUILD_FEM_NETGEN)
+
 
 include_directories(
     ${CMAKE_SOURCE_DIR}/src
@@ -20,14 +24,25 @@ include_directories(
 
 link_directories(${OCC_LIBRARY_DIR})
 
-set(Fem_LIBS
-    Part
-    Mesh
-    FreeCADApp
-    StdMeshers
-    NETGENPlugin
-    SMESH
-)
+
+if(FREECAD_BUILD_FEM_NETGEN)
+    set(Fem_LIBS
+        Part
+        Mesh
+        FreeCADApp
+        StdMeshers
+        NETGENPlugin
+        SMESH
+    )
+else(FREECAD_BUILD_FEM_NETGEN)
+    set(Fem_LIBS
+        Part
+        Mesh
+        FreeCADApp
+        StdMeshers
+        SMESH
+    )
+endif(FREECAD_BUILD_FEM_NETGEN)
 
 generate_from_xml(FemMeshPy)
 
diff --git a/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp b/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
index 7bad4cbe3..0ebe3267e 100644
--- a/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
+++ b/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
@@ -38,9 +38,11 @@
 #include <SMDS_PolyhedralVolumeOfNodes.hxx>
 #include <SMDS_VolumeTool.hxx>
 
-#include <NETGENPlugin_SimpleHypothesis_3D.hxx>
-#include <NETGENPlugin_Hypothesis.hxx>
-#include <NETGENPlugin_Mesher.hxx>
+#ifdef FCWithNetgen
+    #include <NETGENPlugin_SimpleHypothesis_3D.hxx>
+    #include <NETGENPlugin_Hypothesis.hxx>
+    #include <NETGENPlugin_Mesher.hxx>
+#endif 
 
 #include <BRepBuilderAPI_Copy.hxx>
 #include <BRepTools.hxx>
@@ -71,7 +73,8 @@ FemMeshShapeNetgenObject::~FemMeshShapeNetgenObject()
 
 App::DocumentObjectExecReturn *FemMeshShapeNetgenObject::execute(void) 
 {
-
+#ifdef FCWithNetgen
+    
     Fem::FemMesh newMesh;
 
     Part::Feature *feat = Shape.getValue<Part::Feature*>();
@@ -132,7 +135,7 @@ App::DocumentObjectExecReturn *FemMeshShapeNetgenObject::execute(void)
 
     // set the value to the object
     FemMesh.setValue(newMesh);
-
+#endif 
     
     return App::DocumentObject::StdReturn;
 }
diff --git a/src/Mod/Fem/Gui/CMakeLists.txt b/src/Mod/Fem/Gui/CMakeLists.txt
index 6dc46ff7e..823d75c65 100755
--- a/src/Mod/Fem/Gui/CMakeLists.txt
+++ b/src/Mod/Fem/Gui/CMakeLists.txt
@@ -4,6 +4,10 @@ else(MSVC)
     add_definitions(-DHAVE_LIMITS_H -DHAVE_CONFIG_H)
 endif(MSVC)
 
+if(FREECAD_BUILD_FEM_NETGEN)
+    add_definitions(-DFCWithNetgen)
+endif(FREECAD_BUILD_FEM_NETGEN)
+
 include_directories(
     ${CMAKE_SOURCE_DIR}/src
     ${CMAKE_CURRENT_BINARY_DIR}
diff --git a/src/Mod/Fem/Gui/Command.cpp b/src/Mod/Fem/Gui/Command.cpp
index f65d8c552..4c10293b9 100755
--- a/src/Mod/Fem/Gui/Command.cpp
+++ b/src/Mod/Fem/Gui/Command.cpp
@@ -126,6 +126,12 @@ CmdFemCreateAnalysis::CmdFemCreateAnalysis()
 
 void CmdFemCreateAnalysis::activated(int iMsg)
 {
+#ifndef FCWithNetgen
+    QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Wrong selection"),
+            QObject::tr("Your FreeCAD is build without NETGEN support. Meshing will not work...."));
+    return;
+#endif 
+
     std::vector<Gui::SelectionObject> selection = getSelection().getSelectionEx();
 
     if (selection.size() != 1) {