fix(cmake): Add search for toxcore or libtoxcore

cmake/Dependencies.cmake

@@ -94,9 +94,20 @@ search_dependency(LIBQRENCODE         PACKAGE libqrencode)
 search_dependency(LIBSODIUM           PACKAGE libsodium)
 search_dependency(LIBSWSCALE          PACKAGE libswscale)
 search_dependency(SQLCIPHER           PACKAGE sqlcipher)
+search_dependency(VPX                 PACKAGE vpx)
+
+# Try to find cmake toxcore libraries
+search_dependency(TOXCORE             PACKAGE toxcore          OPTIONAL)
+search_dependency(TOXAV               PACKAGE toxav            OPTIONAL)
+search_dependency(TOXENCRYPTSAVE      PACKAGE toxencryptsave   OPTIONAL)
+
+# If not found, use automake toxcore libraries
+if (NOT TOXCORE_FOUND OR
+        NOT TOXAV_FOUND OR
+        NOT TOXENCRYPTSAVE_FOUND)
     search_dependency(TOXCORE             PACKAGE libtoxcore)
     search_dependency(TOXAV               PACKAGE libtoxav)
-search_dependency(VPX                 PACKAGE vpx)
+endif()
 
 search_dependency(OPENAL              PACKAGE openal FRAMEWORK OpenAL)