diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index f3bfadde..82b1087c 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -4,12 +4,17 @@ cmake_minimum_required(VERSION 3.14.1)
 
 project(cmake_trivial_2023 C CXX)
 
-set (CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 17)
 find_package(Threads REQUIRED)
 
-# Settings for `googletest`. It builds faste without `gmock`.
-set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-option(BUILD_GMOCK OFF)
+if(NOT DEFINED ENV{CURRENT_WITH_LEVELDB})
+  message(STATUS "Disabling gmock.")
+  # Settings for `googletest`. It builds faste without `gmock`.
+  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+  option(BUILD_GMOCK OFF)
+else()
+  message(STATUS "Using Current with LevelDB.")
+endif()
 
 # The helper to clone a dependency, or use it from a sibling dir if available.
 function(UseOrGitClone dep remote branch)
@@ -27,7 +32,7 @@ function(UseOrGitClone dep remote branch)
     message(STATUS "Using `${dep}` from `CMAKE_CURRENT_SOURCE_DIR/../${dep}': Configured.")
   else()
     message(STATUS "Cloning `${dep}` from `${remote}:${branch}` ...")
-    execute_process(OUTPUT_QUIET ERROR_QUIET COMMAND git clone --depth 1 -b ${branch} ${remote})
+    execute_process(OUTPUT_QUIET ERROR_QUIET COMMAND git clone --depth 1 --recurse-submodules --shallow-submodules -b ${branch} ${remote})
     file(TOUCH .gitignore)
     file(APPEND .gitignore "${dep}/\n")
     add_subdirectory("${CMAKE_SOURCE_DIR}/${dep}" ${dep})
@@ -36,9 +41,18 @@ function(UseOrGitClone dep remote branch)
 endfunction()
 
 UseOrGitClone(current https://github.com/c5t/current stable)
-UseOrGitClone(googletest https://github.com/c5t/googletest v1.14)
 
-set(C5T_LIBRARIES "Threads::Threads" "C5T")
+if(NOT DEFINED ENV{CURRENT_WITH_LEVELDB})
+  UseOrGitClone(googletest https://github.com/c5t/googletest v1.14)
+else()
+  UseOrGitClone(leveldb https://github.com/c5t/leveldb main)
+endif()
+
+if(NOT DEFINED ENV{CURRENT_WITH_LEVELDB})
+  set(C5T_LIBRARIES "Threads::Threads" "C5T")
+else()
+  set(C5T_LIBRARIES "Threads::Threads" "C5T" "leveldb")
+endif()
 
 # Declare shared libraries as shared library targets. Do not link them against anything external.
 file(GLOB_RECURSE BINARY_SOURCE_FILES "src/dlib_*.cc")