Boost minimal cmake version and quick fix CMP0033 policy (#21)

* Boost minimal cmake version and quick fix CMP0033 policy

* Clean up cmake files

Author: dudarboh

CMakeLists.txt

@@ -1,7 +1,7 @@
 ########################################################
 # cmake file for building CED
 # @author Jan Engels, Desy IT
-CMAKE_MINIMUM_REQUIRED(VERSION 2.6 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.20 FATAL_ERROR)
 ########################################################
 
 
@@ -147,5 +147,5 @@ DISPLAY_STD_VARIABLES()
 
 
 # generate and install following configuration files
-GENERATE_PACKAGE_CONFIGURATION_FILES( CEDConfig.cmake CEDConfigVersion.cmake CEDLibDeps.cmake )
+GENERATE_PACKAGE_CONFIGURATION_FILES( CEDConfig.cmake CEDConfigVersion.cmake )
 

cmake/CEDConfig.cmake.in

@@ -50,15 +50,6 @@ INCLUDE( "@ILCSOFT_CMAKE_MODULES_ROOT@/MacroCheckPackageLibs.cmake" )
 CHECK_PACKAGE_LIBS( CED CED )
 
 
-
-
-# ---------- libraries dependencies -------------------------------------------
-# this sets CED_${COMPONENT}_LIB_DEPENDS variables
-INCLUDE( "${CED_ROOT}/lib/cmake/CEDLibDeps.cmake" )
- 
-
-
-
 # ---------- final checking ---------------------------------------------------
 INCLUDE( FindPackageHandleStandardArgs )
 # set CED_FOUND to TRUE if all listed variables are TRUE and not empty