Remove deprecated uses of FetchContent_Populate

Cannot use MakeAvailable as the files shouldn't be added to the build, so instead uses the full signature for FetchContent_Populate

Fixes #2124

Author: will-v-pi

external/pico_sdk_import.cmake

@@ -40,25 +40,26 @@ if (NOT PICO_SDK_PATH)
         if (PICO_SDK_FETCH_FROM_GIT_PATH)
             get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
         endif ()
-        # GIT_SUBMODULES_RECURSE was added in 3.17
-        if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
-            FetchContent_Declare(
+        FetchContent_Declare(
+                pico_sdk
+                GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
+                GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
+        )
+
+        if (NOT pico_sdk)
+            message("Downloading Raspberry Pi Pico SDK")
+            FetchContent_Populate(
                     pico_sdk
+                    QUIET
                     GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
                     GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
                     GIT_SUBMODULES_RECURSE FALSE
+
+                    SOURCE_DIR ${FETCHCONTENT_BASE_DIR}/pico_sdk-src
+                    BINARY_DIR ${FETCHCONTENT_BASE_DIR}/pico_sdk-build
+                    SUBBUILD_DIR ${FETCHCONTENT_BASE_DIR}/pico_sdk-subbuild
             )
-        else ()
-            FetchContent_Declare(
-                    pico_sdk
-                    GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
-                    GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
-            )
-        endif ()
 
-        if (NOT pico_sdk)
-            message("Downloading Raspberry Pi Pico SDK")
-            FetchContent_Populate(pico_sdk)
             set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
         endif ()
         set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})

tools/Findpicotool.cmake

@@ -15,10 +15,12 @@ if (NOT TARGET picotool)
     endif ()
 
     include(FetchContent)
-    set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
     if (PICOTOOL_FETCH_FROM_GIT_PATH)
-        get_filename_component(FETCHCONTENT_BASE_DIR "${PICOTOOL_FETCH_FROM_GIT_PATH}" ABSOLUTE)
+        get_filename_component(picotool_INSTALL_DIR "${PICOTOOL_FETCH_FROM_GIT_PATH}" ABSOLUTE)
+    else ()
+        get_filename_component(picotool_INSTALL_DIR "${FETCHCONTENT_BASE_DIR}" ABSOLUTE)
     endif ()
+    set(picotool_INSTALL_DIR ${picotool_INSTALL_DIR} CACHE PATH "Directory where picotool has been installed" FORCE)
 
     set(picotool_BUILD_TARGET picotoolBuild)
     set(picotool_TARGET picotool)
@@ -32,20 +34,15 @@ if (NOT TARGET picotool)
             )
         endif()
 
-        FetchContent_Declare(
-                picotool
-                GIT_REPOSITORY https://github.com/raspberrypi/picotool.git
-                GIT_TAG develop
-                GIT_PROGRESS true
-        )
+        message("Downloading Picotool")
+        FetchContent_Populate(picotool QUIET
+            GIT_REPOSITORY https://github.com/raspberrypi/picotool.git
+            GIT_TAG develop
 
-        FetchContent_GetProperties(picotool)
-        set(picotool_INSTALL_DIR ${FETCHCONTENT_BASE_DIR} CACHE PATH "Directory where picotool has been installed" FORCE)
-        if (NOT picotool_POPULATED)
-            message("Downloading Picotool")
-            FetchContent_Populate(picotool)
-        endif ()
-        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
+            SOURCE_DIR ${picotool_INSTALL_DIR}/picotool-src
+            BINARY_DIR ${picotool_INSTALL_DIR}/picotool-build
+            SUBBUILD_DIR ${picotool_INSTALL_DIR}/picotool-subbuild
+        )
 
         add_custom_target(picotoolForceReconfigure
             ${CMAKE_COMMAND} -E touch_nocreate "${CMAKE_SOURCE_DIR}/CMakeLists.txt"