diff --git a/cmake/initialize-submodules.cmake b/cmake/initialize-submodules.cmake
index 4bf2bfa..3e30e23 100644
--- a/cmake/initialize-submodules.cmake
+++ b/cmake/initialize-submodules.cmake
@@ -7,47 +7,32 @@ macro(add_submodule module_name)
     set(Args ${ARGN})
     list(LENGTH Args NumArgs)
 
-    set(target_name ${module_name})
     if(NumArgs GREATER 0)
-        set(module_path ${ARGV1})
+        set(target_name "${ARGV1}")
     else()
-        set(module_path ${module_name})
+        set(target_name "${module_name}")
     endif()
-    set(full_module_path ${module_path})
 
-    if(GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
-        set(git_modules_file "${PROJECT_SOURCE_DIR}/.gitmodules")
-        if (EXISTS ${git_modules_file})
-            file(STRINGS ${git_modules_file} file_lines)
-
-            foreach(line ${file_lines})
-
-                if (${line} MATCHES "url =")
-                    string(REGEX REPLACE "\\s*url = .*/(.*).git" "\\1" submodule "${line}")
-                    string(STRIP "${submodule}" submodule)
-
-                    string(COMPARE EQUAL ${submodule} ${module_path} is_submodule)
-                    if(${is_submodule})
-                        message(STATUS "Updating submodule \"${submodule}\"")
-                        execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive "${submodule}"
-                                WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-                                RESULT_VARIABLE GIT_SUBMOD_RESULT)
-                        if(GIT_SUBMOD_RESULT EQUAL "0")
-                            set(full_module_path ${CMAKE_CURRENT_SOURCE_DIR}/${module_path})
-                        else()
-                            message(FATAL_ERROR "Unable to update submodule \"${submodule}\"")
-                        endif()
-                        break()
-                    endif()
-                endif()
-
-            endforeach()
+    set(module_path "${CMAKE_CURRENT_SOURCE_DIR}/${module_name}")
+    if(NumArgs GREATER 1)
+        set(module_path "${ARGV2}/vendor/${module_name}")
+        set(is_submodule false)
+    else()
+        set(is_submodule true)
+    endif()
 
+    if(${is_submodule} AND GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
+        message(STATUS "Updating submodule \"${module_name}\"")
+        execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive "${module_path}"
+                WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                RESULT_VARIABLE GIT_SUBMOD_RESULT)
+        if(NOT GIT_SUBMOD_RESULT EQUAL "0")
+            message(FATAL_ERROR "Unable to update submodule \"${module_name}\"")
         endif()
     endif()
 
-    if (NOT TARGET ${target_name} AND (EXISTS "${full_module_path}"))
-        message(STATUS "Adding subdirectory \"${module_path}\" to project \"${PROJECT_NAME}\"")
+    if (NOT TARGET ${target_name} AND (EXISTS "${module_path}"))
+        message(STATUS "Adding subdirectory \"${module_path}\"")
         add_subdirectory(${module_path})
     endif()
 
diff --git a/vendor/CMakeLists.txt b/vendor/CMakeLists.txt
index f5fb04f..a1f32e3 100644
--- a/vendor/CMakeLists.txt
+++ b/vendor/CMakeLists.txt
@@ -1,23 +1,19 @@
 include(initialize-submodules)
 
 add_submodule(fmt)
-if (NOT TARGET fmt)
-    set(FMT_INSTALL OFF CACHE BOOL "" FORCE)
-    mark_as_advanced(FMT_CMAKE_DIR FMT_CUDA_TEST FMT_DEBUG_POSTFIX FMT_DOC FMT_FUZZ FMT_INC_DIR FMT_INSTALL FMT_INSTALL
-            FMT_LIB_DIR FMT_MODULE FMT_OS FMT_PEDANTIC FMT_PKGCONFIG_DIR FMT_SYSTEM_HEADERS FMT_TEST FMT_WERROR)
-endif ()
+set(FMT_INSTALL OFF CACHE BOOL "" FORCE)
+mark_as_advanced(FMT_CMAKE_DIR FMT_CUDA_TEST FMT_DEBUG_POSTFIX FMT_DOC FMT_FUZZ FMT_INC_DIR FMT_INSTALL FMT_INSTALL
+        FMT_LIB_DIR FMT_MODULE FMT_OS FMT_PEDANTIC FMT_PKGCONFIG_DIR FMT_SYSTEM_HEADERS FMT_TEST FMT_WERROR)
+
 
-# googletest library
 if (${PROJECT_NAME}_BUILD_TESTING)
-    add_submodule(gtest googletest)
-    if (NOT TARGET gtest)
 
-        # Prevent GoogleTest from overriding our compiler/linker options
-        # when building with Visual Studio
-        set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-        set(BUILD_GTEST ON CACHE BOOL "" FORCE MARK)
-        set(BUILD_GMOCK ON CACHE BOOL "" FORCE)
-        set(INSTALL_GTEST OFF CACHE BOOL "" FORCE)
-        mark_as_advanced(BUILD_GTEST BUILD_GMOCK INSTALL_GTEST)
-    endif()
+    # googletest library
+    set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+    set(BUILD_GTEST ON CACHE BOOL "" FORCE MARK)
+    set(BUILD_GMOCK ON CACHE BOOL "" FORCE)
+    set(INSTALL_GTEST OFF CACHE BOOL "" FORCE)
+    mark_as_advanced(BUILD_GTEST BUILD_GMOCK INSTALL_GTEST)
+    add_submodule(googletest gtest)
+
 endif()
\ No newline at end of file