py3: /cMake gathering commits for cmake

mostly this changes are necessary to build FreeCAD with py3 (and conda) on windows.
issue 0000995

CMakeLists.txt

@@ -620,7 +620,7 @@ endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
         )
 
         # check which modules are available
-        if(UNIX)
+        if(UNIX OR WIN32)
             find_package(VTK COMPONENTS vtkCommonCore REQUIRED NO_MODULE)
             list(APPEND VTK_COMPONENTS vtkIOMPIParallel vtkParallelMPI vtkhdf5)
             foreach(_module ${VTK_COMPONENTS})

cMake/FindCoin3D.cmake

@@ -12,12 +12,14 @@ IF (WIN32)
   IF (CYGWIN)
 
     FIND_PATH(COIN3D_INCLUDE_DIRS Inventor/So.h
+      ${CMAKE_INCLUDE_PATH}
       /usr/include
       /usr/local/include
       /usr/include/coin
     )
 
     FIND_LIBRARY(COIN3D_LIBRARIES Coin
+      ${CMAKE_LIBRARY_PATH}
       /usr/lib
       /usr/local/lib
     )
@@ -32,8 +34,13 @@ IF (WIN32)
       "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SIM\\Coin3D\\2;Installation Path]/lib"
     )
 
-    FIND_LIBRARY(COIN3D_LIBRARY_RELEASE coin2
-      "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SIM\\Coin3D\\2;Installation Path]/lib"
+    FIND_LIBRARY(COIN3D_LIBRARY_RELEASE
+      NAMES
+        coin2
+        Coin4
+      PATHS
+        ${CMAKE_LIBRARY_PATH}
+        "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SIM\\Coin3D\\2;Installation Path]/lib"
     )
 
     IF (COIN3D_LIBRARY_DEBUG AND COIN3D_LIBRARY_RELEASE)
@@ -76,6 +83,7 @@ ELSE (WIN32)
     # ... then fall back to manual lookup
     IF(NOT COIN3D_FOUND)
       FIND_PATH(COIN3D_INCLUDE_DIRS Inventor/So.h
+        ${CMAKE_INCLUDE_PATH}
         /usr/include/Coin3
         /usr/include
         /usr/include/coin
@@ -83,6 +91,7 @@ ELSE (WIN32)
       )
 
       FIND_LIBRARY(COIN3D_LIBRARIES Coin
+        ${CMAKE_LIBRARY_PATH}
         /usr/lib
         /usr/local/lib
         PATH_SUFFIXES Coin2 Coin3

cMake/FindNETGEN.cmake

@@ -140,7 +140,9 @@ IF(NGLIB_INCLUDE_DIR AND NGLIB_LIBRARIES)
       elseif(HAS_CPP1Y_FLAG)
           set(NETGEN_CXX_FLAGS "-std=c++1y")
       else()
-          message(FATAL_ERROR "Unsupported compiler -- C++1y support or newer required!")
+          # message(FATAL_ERROR "Unsupported compiler -- C++1y support or newer required!")
+          message(STATUS "can not detect c++1y support, but will try to build with c++1y")
+          set(NETGEN_CXX_FLAGS "-std=c++1y")
       endif()
       if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
         # Clang sometimes fails to include <cstdio>

cMake/FindPySideTools.cmake

@@ -57,16 +57,21 @@ MACRO(PYSIDE_WRAP_RC outfiles)
     #ADD_CUSTOM_TARGET(${it} ALL
     #  DEPENDS ${outfile}
     #)
+    if (${PYTHON_VERSION_MAJOR} LESS 3)
+      SET(PY_ATTRIBUTE "")
+    else (${PYTHON_VERSION_MAJOR} LESS 3)
+      SET(PY_ATTRIBUTE "-py3")
+    endif (${PYTHON_VERSION_MAJOR} LESS 3)
     if(WIN32)
         ADD_CUSTOM_COMMAND(OUTPUT ${outfile}
-          COMMAND ${PYSIDERCC4BINARY} ${infile} -o ${outfile}
+          COMMAND ${PYSIDERCC4BINARY} ${infile} ${PY_ATTRIBUTE} -o ${outfile}
           MAIN_DEPENDENCY ${infile}
         )
     else(WIN32)
         # Especially on Open Build Service we don't want changing date like
         # pyside-rcc generates in comments at beginning.
         EXECUTE_PROCESS(
-          COMMAND ${PYSIDERCC4BINARY} ${infile}
+          COMMAND ${PYSIDERCC4BINARY} ${infile} ${PY_ATTRIBUTE}
           COMMAND sed "/^# /d"
           OUTPUT_FILE ${outfile}
        )

cMake/FindXercesC.cmake

@@ -9,6 +9,7 @@
 # XercesC_FOUND, If false, don't try to use pwlib.
 
 FIND_PATH(XercesC_INCLUDE_DIRS xercesc/dom/DOM.hpp
+  ${CMAKE_INCLUDE_PATH}
   "[HKEY_CURRENT_USER\\software\\xerces-c\\src]"
   "[HKEY_CURRENT_USER\\xerces-c\\src]"
   $ENV{XERCESCROOT}/src/
@@ -19,7 +20,9 @@ FIND_PATH(XercesC_INCLUDE_DIRS xercesc/dom/DOM.hpp
 FIND_LIBRARY(XercesC_LIBRARIES
   NAMES
     xerces-c
+    xerces-c_3
   PATHS
+    ${CMAKE_LIBRARY_PATH}
     "[HKEY_CURRENT_USER\\software\\xerces-c\\lib]"
     "[HKEY_CURRENT_USER\\xerces-c\\lib]"
     $ENV{XERCESCROOT}/${LIB_DESTINATION}