diff --git a/ExampleCodes/CMakeLists.txt b/ExampleCodes/CMakeLists.txt
index be729404..736d93e9 100644
--- a/ExampleCodes/CMakeLists.txt
+++ b/ExampleCodes/CMakeLists.txt
@@ -59,14 +59,14 @@ if( NOT DEFINED AMReX_DIR )
        GIT_TAG        ${AMReX_GIT_BRANCH}
        )
 
-   if(NOT ${amrex}_POPULATED)
-       FetchContent_Populate(amrex)
+if(NOT ${amrex}_POPULATED)
+   FetchContent_MakeAvailable(amrex)
 
-       list(APPEND CMAKE_MODULE_PATH ${amrex_SOURCE_DIR}/Tools/CMake)
+   list(APPEND CMAKE_MODULE_PATH ${amrex_SOURCE_DIR}/Tools/CMake)
 
-       # Load amrex options here so that they are
-       # available to the entire project
-       include(AMReXOptions)
+   # Load amrex options here so that they are
+   # available to the entire project
+   include(AMReXOptions)
 
 if( AMReX_SUNDIALS )
 if( NOT DEFINED SUNDIALS_DIR )
@@ -86,7 +86,7 @@ if( NOT DEFINED SUNDIALS_DIR )
        )
 
    if(NOT ${sundials}_POPULATED)
-       FetchContent_Populate(sundials)
+       FetchContent_MakeAvailable(sundials)
 #       set(SUNDIALS_DIR ${sundials_SOURCE_DIR})
    # Set build options for subproject
    set(EXAMPLES_ENABLE_C            OFF                        CACHE INTERNAL "" )
@@ -122,9 +122,6 @@ if( NOT DEFINED SUNDIALS_DIR )
 endif ()
    list(APPEND CMAKE_MODULE_PATH ${sundials_SOURCE_DIR})
 
-#  Add  SUNDIALS sources to the build
-   add_subdirectory(${sundials_SOURCE_DIR})
-
    # This is to use the same target name uses by the sundials exported targets
    add_library(SUNDIALS::cvode      ALIAS sundials_cvode_static)
    add_library(SUNDIALS::arkode     ALIAS sundials_arkode_static)
@@ -172,9 +169,6 @@ endif ()
              include(AMReX_SetupCUDA)
           endif()
        endif()
-
-       # Bring the populated content into the build
-       add_subdirectory(${amrex_SOURCE_DIR} ${amrex_BINARY_DIR})
    endif()
 else()
    message(STATUS "Using existing AMReX library")
@@ -210,10 +204,8 @@ if(TUTORIAL_PYTHON)
            GIT_REPOSITORY ${pyAMReX_GIT_REPO}
            GIT_TAG        ${pyAMReX_GIT_BRANCH}
            )
-
        if(NOT fetchedpyamrex_POPULATED)
-           FetchContent_Populate(fetchedpyamrex)
-           add_subdirectory(${fetchedpyamrex_SOURCE_DIR} ${fetchedpyamrex_BINARY_DIR})
+           FetchContent_MakeAvailable(fetchedpyamrex)
        endif()
     endif()
 endif()
diff --git a/GuidedTutorials/HeatEquation/Exec/CMakeLists.txt b/GuidedTutorials/HeatEquation/Exec/CMakeLists.txt
index 33706d03..578f8df5 100644
--- a/GuidedTutorials/HeatEquation/Exec/CMakeLists.txt
+++ b/GuidedTutorials/HeatEquation/Exec/CMakeLists.txt
@@ -57,11 +57,7 @@ if(NOT DEFINED AMReX_ROOT)
     GIT_TAG        origin/development
     )
 
-  FetchContent_Populate(amrex_code)
-
-  # CMake will read the files in these directories and configure, build
-  # and install AMReX.
-  add_subdirectory(${amrex_code_SOURCE_DIR} ${amrex_code_BINARY_DIR})
+  FetchContent_MakeAvailable(amrex_code)
 
 else()
 
diff --git a/GuidedTutorials/HeatEquation_Simple/CMakeLists.txt b/GuidedTutorials/HeatEquation_Simple/CMakeLists.txt
index 0aee75e7..fb5c2d43 100644
--- a/GuidedTutorials/HeatEquation_Simple/CMakeLists.txt
+++ b/GuidedTutorials/HeatEquation_Simple/CMakeLists.txt
@@ -49,11 +49,7 @@ if(NOT DEFINED AMReX_ROOT)
     GIT_TAG        origin/development
     )
 
-  FetchContent_Populate(amrex_code)
-
-  # CMake will read the files in these directories to configure, build
-  # and install AMReX.
-  add_subdirectory(${amrex_code_SOURCE_DIR} ${amrex_code_BINARY_DIR})
+  FetchContent_MakeAvailable(amrex_code)
 
 else()
 
diff --git a/GuidedTutorials/HelloWorld/CMakeLists.txt b/GuidedTutorials/HelloWorld/CMakeLists.txt
index 3a4c8849..68fe3b4e 100644
--- a/GuidedTutorials/HelloWorld/CMakeLists.txt
+++ b/GuidedTutorials/HelloWorld/CMakeLists.txt
@@ -53,11 +53,7 @@ if(NOT DEFINED AMReX_ROOT)
     GIT_TAG        origin/development
     )
 
-  FetchContent_Populate(amrex_code)
-
-  # CMake will read the files in these directories and configure, build
-  # and install AMReX.
-  add_subdirectory(${amrex_code_SOURCE_DIR} ${amrex_code_BINARY_DIR})
+  FetchContent_MakeAvailable(amrex_code)
 
 else()
 
diff --git a/GuidedTutorials/MultiFab/CMakeLists.txt b/GuidedTutorials/MultiFab/CMakeLists.txt
index b5b3cbf8..e54b1295 100644
--- a/GuidedTutorials/MultiFab/CMakeLists.txt
+++ b/GuidedTutorials/MultiFab/CMakeLists.txt
@@ -53,11 +53,7 @@ if(NOT DEFINED AMReX_ROOT)
     GIT_TAG        origin/development
     )
 
-  FetchContent_Populate(amrex_code)
-
-  # CMake will read the files in these directories and configure, build
-  # and install AMReX.
-  add_subdirectory(${amrex_code_SOURCE_DIR} ${amrex_code_BINARY_DIR})
+  FetchContent_MakeAvailable(amrex_code)
 
 else()