devicetree: remove support for DTC_OVERLAY_FILE in environment
Setting of DTC_OVERLAY_FILE as an environment setting was deprecated
before Zephyr 1.14 LTS.
This commit remove the support for this possibility and thus cleans up
the build system.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
diff --git a/cmake/app/boilerplate.cmake b/cmake/app/boilerplate.cmake
index 25bccc3..f69c628 100644
--- a/cmake/app/boilerplate.cmake
+++ b/cmake/app/boilerplate.cmake
@@ -489,10 +489,7 @@
if(DTC_OVERLAY_FILE)
# DTC_OVERLAY_FILE has either been specified on the cmake CLI or is already
- # in the CMakeCache.txt. This has precedence over the environment
- # variable DTC_OVERLAY_FILE
-elseif(DEFINED ENV{DTC_OVERLAY_FILE})
- set(DTC_OVERLAY_FILE $ENV{DTC_OVERLAY_FILE})
+ # in the CMakeCache.txt.
elseif(APP_BOARD_DTS)
set(DTC_OVERLAY_FILE ${APP_BOARD_DTS})
elseif(EXISTS ${APPLICATION_SOURCE_DIR}/${BOARD}.overlay)
diff --git a/doc/guides/dts/howtos.rst b/doc/guides/dts/howtos.rst
index 39a118b..c0edaaa 100644
--- a/doc/guides/dts/howtos.rst
+++ b/doc/guides/dts/howtos.rst
@@ -210,7 +210,6 @@
(``-DDTC_OVERLAY_FILE="file1.overlay;file2.overlay"``)
#. with the CMake ``set()`` command in the application ``CMakeLists.txt``,
before including zephyr's :file:`boilerplate.cmake` file
-#. using a ``DTC_OVERLAY_FILE`` environment variable (deprecated)
#. create a ``boards/<BOARD>_<revision>.overlay`` file in the application
folder for the current board revision. This requires that the board supports
multiple revisions, see :ref:`porting_board_revisions`.
