Hello,

I'm trying to setup a dev environment for ESP32 microcontrollers. I'm
struggling to compile my application. Appreciate any help on how to use
the xtensa toolchain ports on OpenBSD.

I installed the following ports:

xtensa-esp32-elf-binutils-2.35.1.2020.1223p1
xtensa-esp32-elf-gcc-8.4.0.2021.2p1
xtensa-esp32-elf-gcc-bootstrap-8.4.0.2021.2p0
xtensa-esp32-elf-gdb-2.35.1.2021.2p1
xtensa-esp32-elf-newlib-2021.2p0

I also installed the py3-cryptography-41.0.6, which seems to be needed
by the ESP-IDF. I get as far as generating the makefiles using:

cmake -DPYTHON=python3 .. -G "Unix Makefiles"

When I run the command above, I see the following warning:

CMake Warning at
/home/sadeep/esp/esp-idf-v5.1.2/tools/cmake/tool_version_check.cmake:41
(message):
  Can not get version for tool:
  /usr/local/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc

  Check Getting Started documentation or proceed at own risk.

Call Stack (most recent call first):
  /home/sadeep/esp/esp-idf-v5.1.2/components/esp_common/project_include.cmake:10
(check_expected_tool_version)
  /home/sadeep/esp/esp-idf-v5.1.2/tools/cmake/build.cmake:398 (include)
  /home/sadeep/esp/esp-idf-v5.1.2/tools/cmake/build.cmake:620
(__build_process_project_includes)
  /home/sadeep/esp/esp-idf-v5.1.2/tools/cmake/project.cmake:547
(idf_build_process)
  CMakeLists.txt:6 (project)

Then I run the command make, which results in the following error:

/home/sadeep/esp/esp-idf-v5.1.2/components/esp_adc/adc_oneshot.c:47:5:
error: unknown type name '_lock_t'
     _lock_t mutex;
     ^~~~~~~
/home/sadeep/esp/esp-idf-v5.1.2/components/esp_adc/adc_oneshot.c: In
function 'adc_oneshot_new_unit':
/home/sadeep/esp/esp-idf-v5.1.2/components/esp_adc/adc_oneshot.c:95:5:
error: implicit declaration of function '_lock_acquire'; did you mean
'adc_lock_acquire'? [-Werror=implicit-function-declaration]
     _lock_acquire(&s_ctx.mutex);
     ^~~~~~~~~~~~~
     adc_lock_acquire
/home/sadeep/esp/esp-idf-v5.1.2/components/esp_adc/adc_oneshot.c:97:5:
error: implicit declaration of function '_lock_release'; did you mean
'adc_lock_release'? [-Werror=implicit-function-declaration]
     _lock_release(&s_ctx.mutex);
     ^~~~~~~~~~~~~
     adc_lock_release
/home/sadeep/esp/esp-idf-v5.1.2/components/esp_adc/adc_oneshot.c: At top
level:
cc1: warning: unrecognized command line option '-Wno-enum-conversion'
cc1: some warnings being treated as errors
*** Error 1 in .
(esp-idf/esp_adc/CMakeFiles/__idf_esp_adc.dir/build.make:104
'esp-idf/esp_adc/CMakeFiles/__idf_esp_adc.dir/adc_oneshot.c.obj')
*** Error 2 in . (CMakeFiles/Makefile2:3900
'esp-idf/esp_adc/CMakeFiles/__idf_esp_adc.dir/all': make -s -f
esp-idf/esp_adc/CMakeFiles/__idf_...)
*** Error 2 in /home/sadeep/git.bak/dash/build (Makefile:136 'all': make
-s -f CMakeFiles/Makefile2 all)

-- 
Sadeep Madurange
PGP: 103BF9E3E750BF7E