Unsupported optimization level OpenCV idf component (IEC-157)

[Ncouch64]

Answers checklist.

• I have read the documentation of the component in question and the issue is not addressed there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

I am attempting to improve the performance of my program by using some of the recommended optimization settings in the documentation. When setting optimization level -02 and attempting to build I get the following error:

-- Found Git: /usr/bin/git (found version "2.34.1")
-- The C compiler identification is GNU 13.2.0
-- The CXX compiler identification is GNU 13.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/vulcan/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/xtensa-esp32s3-elf-gcc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/vulcan/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/xtensa-esp32s3-elf-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/vulcan/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/xtensa-esp32s3-elf-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- git rev-parse returned 'fatal: not a git repository (or any of the parent directories): .git'
-- Could not use 'git describe' to determine PROJECT_VER.
-- Building ESP-IDF components for target esp32s3
Processing 3 dependencies:
[1/3] espressif/esp32-camera (2.0.10)
[2/3] espressif/opencv (4.7.0~5)
[3/3] idf (5.2.1)
-- Project sdkconfig file /home/vulcan/Projects/cv_motion/sdkconfig
-- Compiler supported targets: xtensa-esp-elf
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of time_t
-- Check size of time_t - done
-- Found Python3: /home/vulcan/.espressif/python_env/idf5.2_py3.10_env/bin/python (found version "3.10.12") found components: Interpreter
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS - Success
-- App "cv_motion" version: 1
-- Adding linker script /home/vulcan/Projects/cv_motion/build/esp-idf/esp_system/ld/memory.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_system/ld/esp32s3/sections.ld.in
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_rom/esp32s3/ld/esp32s3.rom.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_rom/esp32s3/ld/esp32s3.rom.api.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_rom/esp32s3/ld/esp32s3.rom.libgcc.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_rom/esp32s3/ld/esp32s3.rom.newlib.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/esp_rom/esp32s3/ld/esp32s3.rom.version.ld
-- Adding linker script /home/vulcan/esp/v5.2/esp-idf/components/soc/esp32s3/ld/esp32s3.peripherals.ld
CMake Error at managed_components/espressif__opencv/CMakeLists.txt:69 (message):
Unsupported optimization level

-- Configuring incomplete, errors occurred!
See also "/home/vulcan/Projects/cv_motion/build/CMakeFiles/CMakeOutput.log".

• The terminal process "/usr/bin/cmake '-G=Ninja', '-DPYTHON_DEPS_CHECKED=1', '-DESP_PLATFORM=1', '-B=/home/vulcan/Projects/cv_motion/build', '-S=/home/vulcan/Projects/cv_motion'" terminated with exit code: 1.

I have tried some of the fixes I was able to find relating somewhat to this issue, -fno-if-conversion, but I have been unable to solve the problem as of yet.

[Ncouch64]

Do NOT run it.

It's malware that'll steal your account if executed, to spread further spamming the same message elsewhere, like happened to this person.

There are a lot of comments like that

https://github.com/search?q=is%3Aissue+%22In+the+installer+menu%2C+select+%5C%22gcc.%5C%22%22+AND+%22password%3A+changeme%22&type=issues&s=created&o=desc

(and this is how I found this issue)

I assumed as much, thanks for the heads up and letting people know!