Add an env to get the Include Tree

buildroot/share/git/mftest

 
 # Allow shorthand for test name
 case $TESTENV in
+    tree) platformio run --project-dir . -e include_tree ; exit 1 ;;
      due) TESTENV='DUE' ;;
      esp) TESTENV='esp32' ;;
     lin*) TESTENV='linux_native' ;;

platformio.ini

 lib_ignore    = U8glib-HAL
 src_filter    = ${common.default_src_filter} +<src/HAL/HAL_SAMD51>
 debug_tool    = jlink
+
+#
+# Just print the dependency tree
+#
+[env:include_tree]
+platform    = atmelavr
+framework   = arduino
+board       = megaatmega2560
+build_flags = -c -H -std=gnu++11 -Wall -Os
+lib_deps    = ${common.lib_deps}
+  TMC26XStepper=https://github.com/trinamic/TMC26XStepper/archive/master.zip
+src_filter  = +<src/Marlin.cpp>