ESP32 Forum

Posted: **Sun Jun 04, 2023 5:31 am**

When I try to build a project for the ESP32-S3 dev kit using windows 10 in the expressif cmd I get a missing compiler error. Any suggestions on a fix:

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Executing "cmake -G Ninja -DPYTHON_DEPS_CHECKED=1 -DESP_PLATFORM=1 -DCCACHE_ENABLE=1 C:\Espressif\frameworks\esp-idf-v5.0.2-3"...
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at C:/Espressif/tools/cmake/3.24.0/share/cmake-3.24/Modules/CMakeDetermineASMCompiler.cmake:17 (message):
  Could not find compiler set in environment variable ASM:

  path\to\compiler\asm.exe.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


CMake Error: CMAKE_ASM_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
See also "C:/Espressif/frameworks/esp-idf-v5.0.2-3/build/CMakeFiles/CMakeOutput.log".
See also "C:/Espressif/frameworks/esp-idf-v5.0.2-3/build/CMakeFiles/CMakeError.log".
cmake failed with exit code 1, output of the command is in the C:\Espressif\frameworks\esp-idf-v5.0.2-3\build\log\idf_py_stderr_output_31932 and C:\Espressif\frameworks\esp-idf-v5.0.2-3\build\log\idf_py_stdout_output_31932

Posted: **Sun Jun 04, 2023 8:32 am**

Did you follow the instructions for installing the idf precisely? Specifically did you call the install that script to install the compilers etc after checking out the repository, and set necessary environment params?

Posted: **Sun Jun 04, 2023 4:06 pm**

Try and run

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idf_tools.py list

and see if its output includes something like (emphasis on "installed")

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* xtensa-esp32s3-elf: Toolchain for Xtensa (ESP32-S3) based on GCC
  - esp-12.2.0_20230208 (recommended, installed)

Posted: **Sun Jun 04, 2023 5:16 pm**

Thanks for your suggestion. When I run

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idf_tools.py list

it asks me how I want to open the file and I picked visual studio. It then open the idf_tools.py file that lists in the comments how to install idf tool, update the path, which I have run in the IDF cmd. After a minute or so I get the following list in the IDF cmd window where I originally typed the command:

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C:\Espressif\frameworks\esp-idf-v5.0.2-6>
[main 2023-06-04T17:12:02.026Z] update#setState idle
[main 2023-06-04T17:12:32.031Z] update#setState checking for updates
[main 2023-06-04T17:12:32.128Z] update#setState idle
[25912:0604/131402.023:ERROR:gpu_init.cc(523)] Passthrough is not supported, GL is disabled, ANGLE is

I didn't see anything that says installed or xtensa. However, it looks like it's already installed:

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C:\Espressif\frameworks\esp-idf-v5.0.2-6>xtensa-esp32s3-elf-gcc --version
xtensa-esp32s3-elf-gcc (crosstool-NG esp-2022r1) 11.2.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Posted: **Mon Jun 05, 2023 8:25 am**

Under Windows, try

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%IDF_PYTHON% %IDF_PATH%\tools\idf_tools.py list

to actually run idf_tools.

Posted: **Sat Feb 17, 2024 2:46 pm**

MicroController wrote:
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%IDF_PYTHON% %IDF_PATH%\tools\idf_tools.py list

Was getting this very weird behaviour, when running idf_tools.py install. Visual Studio Code opened and I was very confused!!

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C:\Users\X390\esp\v5.2\esp-idf> idf_tools.py install
[main 2024-02-17T14:42:17.866Z] update#setState idle
[main 2024-02-17T14:42:20.567Z] Extension host with pid 23232 exited with code: 0, signal: unknown.

Finally! You advised helped! Can you please add this to your docs?? I removed and installed the ESP-IDF nearly 3 times, when working with idf_tools the first time and trying to install esp-clang. THANK YOU!

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