ESP32工程编译提示错误怎么解决？

刚开始用，编译Hello world 时，idf.py set-target esp32, 出现下述错误，但 idf.py set-target esp32s2,则正常编译，请问该怎么解决？网上没有找到相关办法，看得懂提示的英文说明，但不知道要具体怎么操作。。。



-- Could NOT find Perl (missing: PERL_EXECUTABLE)

CMake Warning (dev) at ../../../components/mbedtls/CMakeLists.txt:114 (target_sources):

  Policy CMP0076 is not set: target_sources() command converts relative paths

  to absolute.  Run "cmake --help-policy CMP0076" for policy details.  Use

  the cmake_policy command to set the policy and suppress this warning.



  A private source from a directory other than that of target "mbedcrypto"

  has a relative path.

This warning is for project developers.  Use -Wno-dev to suppress it.



-- App "hello-world" version: v4.3-dirty