Exclude AvogadroLibs as it(s not ported to Qt6 yet

CMakeLists.txt

@@ -41,7 +41,9 @@ find_package(OpenBabel3 3.1)
 if(NOT ${OpenBabel3_FOUND})
     find_package(OpenBabel2)
 endif()
+if (QT_MAJOR_VERSION STREQUAL "6")
 find_package(AvogadroLibs)
+endif()
 find_package(Eigen3 CONFIG)
 find_package(OCaml)
 find_package(Libfacile)
@@ -57,7 +59,11 @@ if(HAVE_OPENBABEL2 OR HAVE_OPENBABEL3)
     set(HAVE_OPENBABEL 1)
 endif()
 set(HAVE_EIGEN ${EIGEN3_FOUND})
-set(HAVE_AVOGADRO ${AvogadroLibs_FOUND})
+if (QT_MAJOR_VERSION STREQUAL "6")
+    set(HAVE_AVOGADRO false)
+else()
+    set(HAVE_AVOGADRO ${AvogadroLibs_FOUND})
+endif()
 
 if(HAVE_OPENBABEL3)
     set(OPENBABEL_INCLUDE_DIR ${OpenBabel3_INCLUDE_DIRS})