Clean up of build script for cxxtest

CMake/SuperBuild.cmake

 include(ExternalProject)
 
-if (eigen3_FOUND)
+if (Eigen3_FOUND)
     message( STATUS "Eigen was found ${eigen_DIR}" )
 else()
     message( STATUS "Eigen WAS NOT FOUND ${eigen_DIR}" )
 		#BUILD_COMMAND     ""
 		#INSTALL_COMMAND     ""
     )
-    
+
+    message("Source dir of myExtProj = ${SOURCE_DIR}")   
+    ExternalProject_Get_property(EIGEN SOURCE_DIR)
+    message("Source dir of myExtProj = ${SOURCE_DIR}")   
+ 
     # Are these necessary?
     #include_directories ("${CMAKE_INSTALL_PREFIX}/include/eigen3/")
     #set (Eigen3_DIR  "${CMAKE_INSTALL_PREFIX}/include/eigen3" CACHE  PATH "" FORCE )
 		GIT_TAG   "yaml-cpp-0.6.1" # "master" 
 		UPDATE_COMMAND ""
 		PATCH_COMMAND ""
-		INSTALL_COMMAND ""
     	PREFIX ${CMAKE_CURRENT_BINARY_DIR}/external/yaml-cpp
     	CMAKE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_INSTALL_PREFIX} 
                    -DBUILD_SHARED_LIBS=${BUILD_SHARED_LIBS} 
-                   -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} 
     	           -DYAML_CPP_BUILD_TESTS=OFF
+                   -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} 
+		#INSTALL_COMMAND ""
 	)	
+
     # is this necessary?
 	#include_directories ("${CMAKE_INSTALL_PREFIX}/include/yaml-cpp")
 endif()
 	    # The values "CACHE PATH "" FORCE" makes the GUI show the values of the local CxxTest, but this can cause issues 
 	    # with users wanting to specify their own path. However, the SuperBuild needs this, in theory you are only here 
         # because a usable CXXTEST was not already found on the machine, so likely this is sane to do 
-	    #set (CXXTEST_INCLUDE_DIR  "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/"  CACHE PATH "" FORCE )
-	    #set (CXXTEST_PYTHON_TESTGEN_EXECUTABLE "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/bin/cxxtestgen" CACHE PATH "" FORCE )
+
 	    #find_package(CxxTest REQUIRED)
     endif()
 endif()
 	)
 endif()
 
+#ExternalProject_Add (Lemma_SB
+#  DEPENDS ${DEPENDENCIES}
+#  SOURCE_DIR ${PROJECT_SOURCE_DIR}
+#  CMAKE_ARGS -DUSE_SUPERBUILD=OFF ${EXTRA_CMAKE_ARGS}
+#  INSTALL_COMMAND ""
+#  BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/blah)
+
+
 # vim: set tabstop=4 shiftwidth=4 expandtab: 

CMakeLists.txt

 cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 
+# Bug in CMake on Linux, but Linux, Mac, and Win all support shared libraries, no harm in this, 
+# but remove when warning no longer shows.
+# Related to calling find_package before a project is created... 
+# https://cmake.org/Bug/view.php?id=15999 
+SET_PROPERTY(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS TRUE)
+
 ####################################################################################################
 # Lemma versioning, set Major, minor, and patch here                                               #
 set(LEMMA_VERSION_MAJOR "0")                                                                       #
 set(LEMMA_VERSION_MINOR "2")                                                                       #
-set(LEMMA_VERSION_PATCH "1")                                                                       #
+set(LEMMA_VERSION_PATCH "2")                                                                       #
 set(LEMMA_VERSION "\"${LEMMA_VERSION_MAJOR}.${LEMMA_VERSION_MINOR}.${LEMMA_VERSION_PATCH}\"")      #
 set(LEMMA_VERSION_NOQUOTES "${LEMMA_VERSION_MAJOR}.${LEMMA_VERSION_MINOR}.${LEMMA_VERSION_PATCH}") #
 ####################################################################################################
 option ( LEMMA_USE_OPENMP           "Use OpenMP in Lemma" OFF )
 option ( LEMMA_BUILD_DOCUMENTATION  "Build Doxygen man pages" OFF )
 
+option (LEMMA_VTK6_SUPPORT "VTK 6.x library for visualisation and grids" OFF)
+option (LEMMA_VTK7_SUPPORT "VTK 7.x library for visualisation and grids" OFF)
+option (LEMMA_VTK8_SUPPORT "VTK 8.x library for visualisation and grids" OFF)
+
 ## Hard Dependencies
-find_package (Eigen3 3.3  NO_MODULE QUIET)   # Matrix/Vector & Math
-find_package (yaml-cpp 0.6 QUIET)            # Serialisation of classes 
+#set(Eigen3_DIR  ${CMAKE_INSTALL_PREFIX} )
+find_package (Eigen3 3.3 QUIET)     # Matrix/Vector & Math
+find_package (yaml-cpp 0.6 QUIET )  # Serialisation of classes 
 
 INCLUDE_DIRECTORIES(${YAML_CPP_INCLUDE_DIR})
 
 
 ## Optional Dependencies
 if (LEMMA_ENABLE_TESTING)
-    message (STATUS "LEMMA_ENABLE_TESTING is set" )
-    #find_package (CxxTest QUIET)            # Unit testing
-    if (EXISTS  "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/cxxtest")
-	    set (CXXTEST_INCLUDE_DIR  "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/" CACHE PATH "" FORCE)
+    if (EXISTS "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/README")
+	    set (CXXTEST_INCLUDE_DIR  "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/"  CACHE PATH "" FORCE )
     else()
-	    set (CXXTEST_INCLUDE_DIR  "CXXTEST_INCLUDE_DIR-NOTFOUND" CACHE PATH "" FORCE)
+	    set (CXXTEST_INCLUDE_DIR  "CXXTEST_INCLUDE_DIR-NOTFOUND"  CACHE PATH "" FORCE )
     endif()
-    if (EXISTS "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/bin/cxxtestgen")
-	    set (CXXTEST_PYTHON_TESTGEN_EXECUTABLE "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/bin/cxxtestgen" CACHE PATH "" FORCE) 
+    if (EXISTS  "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/bin/cxxtestgen")
+	    set (CXXTEST_PYTHON_TESTGEN_EXECUTABLE "${CMAKE_CURRENT_BINARY_DIR}/external/CxxTest/src/CxxTest/bin/cxxtestgen" CACHE PATH "" FORCE )
     else()
-	    set (CXXTEST_PYTHON_TESTGEN_EXECUTABLE "CXXTEST_PYTHON_TESTGEN_EXECUTABLE-NOTFOUND" CACHE PATH "" FORCE) 
-    endif ()
-    find_package (CxxTest)            # Unit testing 
-    message (STATUS "CXXTEST_FOUND ${CxxTest_FOUND}" )
+	    set (CXXTEST_PYTHON_TESTGEN_EXECUTABLE "CXXTEST_PYTHON_TESTGEN_EXECUTABLE-NOTFOUND" CACHE PATH "" FORCE )
+    endif()
+    find_package (CxxTest QUIET)   # Unit testing 
 endif()
 
 #######################################################################
   	# execute the superbuild (this script will be invoked again without the
   	# USE_SUPERBUILD option this time)
   	include (CMake/SuperBuild.cmake)
-
-    #add_dependencies(SUPERBUILD CxxTest) 
-
   	return()                      # stop processing this file further
 else()
 	#project (Blah)                # <-- YOUR PROJECT NAME HERE
-	message( STATUS "CXX test Dir${CXXTEST_DIR}" )
 	message( STATUS "Everything was found, happy Lemma-ing" )
 endif()
 
 
 project (Lemma CXX)
 
+# Disallow in-source build
+if ("${Lemma_SOURCE_DIR}"  STREQUAL "${Lemma_BINARY_DIR}")
+  message(FATAL_ERROR
+    "Lemma requires an out of source Build. "
+    "Please create a separate binary directory and run CMake there.")
+endif()
+
 ##############################
 # required external programs # for downloading packages
 ##############################
 ###################
 
 # We don't build VTK, it is too heavy.
-option (LEMMA_VTK6_SUPPORT "VTK library for visualisation and grids" OFF)
+
 if ( LEMMA_VTK6_SUPPORT ) 
 	#find_package(VTK 6 REQUIRED NO_MODULE)
 	find_package(VTK 6.0 COMPONENTS vtkCommonCore vtkRenderingCore vtkFiltersCore vtkFiltersSources 
 	#include_directories ("${PROJECT_SOURCE_DIR}/Matplot_vtk")
 endif()
 
-option (LEMMA_VTK7_SUPPORT "VTK library for visualisation and grids" OFF)
+
 if ( LEMMA_VTK7_SUPPORT ) 
 	#find_package(VTK 7 REQUIRED NO_MODULE)
 	find_package(VTK 7.0 COMPONENTS vtkCommonCore vtkRenderingCore vtkFiltersCore vtkFiltersSources 
 	endif()
 endif()
 
-option (LEMMA_VTK8_SUPPORT "VTK library for visualisation and grids" OFF)
+
 if ( LEMMA_VTK8_SUPPORT ) 
 	find_package(VTK 8.0 COMPONENTS vtkCommonCore vtkRenderingCore vtkFiltersCore vtkFiltersSources 
 			vtkCommonDataModel vtkFiltersHyperTree vtkIOXML vtkIOImage vtkIOLegacy vtkInteractionStyle 
 SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 
 if (LEMMA_USE_OPENMP)
-    find_package(OpenMP)
-    if (OPENMP_FOUND)
-        set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
-        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-        set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
-    else()
-	message (FATAL ERROR "OpenMP cannot be found, but was specified!")
-    endif()
+    find_package(OpenMP REQUIRED)
+    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+    set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
 endif()
 
 configure_file (