cmake: error out of IDF version is outside of supported range

Author: igrr

CMakeLists.txt

@@ -1,3 +1,28 @@
+# Check ESP-IDF version and error out if it is not in the supported range.
+#
+# Note for arduino-esp32 developers: to bypass the version check locally,
+# set ARDUINO_SKIP_IDF_VERSION_CHECK environment variable to 1. For example:
+#   export ARDUINO_SKIP_IDF_VERSION_CHECK=1
+#   idf.py build
+
+set(min_supported_idf_version "4.4.0")
+set(max_supported_idf_version "4.4.99")
+set(idf_version "${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}.${IDF_VERSION_PATCH}")
+
+if ($"{idf_version}" AND NOT "$ENV{ARDUINO_SKIP_IDF_VERSION_CHECK}")
+  message(FATAL_ERROR ${idf_version})
+  if (idf_version VERSION_LESS min_supported_idf_version)
+      message(FATAL_ERROR "Arduino-esp32 can be used with ESP-IDF version "
+                          "${supported_idf_version}, but an older version is "
+                          "detected: ${idf_version}.")
+  endif()
+  if (idf_version VERSION_GREATER max_supported_idf_version)
+      message(FATAL_ERROR "Arduino-esp32 can be used with ESP-IDF version "
+                          "${supported_idf_version}, but a newer version is "
+                          "detected: ${idf_version}.")
+  endif()
+endif()
+
 set(CORE_SRCS
   cores/esp32/base64.cpp
   cores/esp32/cbuf.cpp