Remove repo. embedded Eigen library zip for Windows, download it if needed...

Remove repo. embedded Eigen library zip for Windows, download it if needed (updating by the way to 3.4.0).

CMake/findEIGENLib.cmake

@@ -59,9 +59,11 @@ elseif(WIN32)
 		message(STATUS "------------------------------------------------")
 		message(STATUS "------------------------------------------------")
 
-		#exec_program("wget -P ${CMAKE_SOURCE_DIR}/externals/win/eigen http://bitbucket.org/eigen/eigen/get/3.2.8.zip")
-		set(EIGEN_LIB_NAME "eigen-eigen-07105f7124f9")
-		#exec_program("rd ${CMAKE_SOURCE_DIR}/externals/win/eigen")
+		set(EIGEN_LINK https://gitlab.com/libeigen/eigen/-/archive/3.4.0/eigen-3.4.0.zip)
+		string(REGEX REPLACE "https://.*/(.*).zip" "\\1" EIGEN_LIB_NAME ${EIGEN_LINK})
+		if(NOT EXISTS ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip)
+			file(DOWNLOAD ${EIGEN_LINK} ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip SHOW_PROGRESS)
+		endif()
 		if(NOT EXISTS ${CMAKE_SOURCE_DIR}/externals/win/${EIGEN_LIB_NAME})
 			file(ARCHIVE_EXTRACT INPUT ${CMAKE_SOURCE_DIR}/externals/win/zipLibs/${EIGEN_LIB_NAME}.zip DESTINATION ${CMAKE_SOURCE_DIR}/externals/win)
 		endif()