Hello, I have discovered that Zephyr's fuzzing sample: https://docs.zephyrproject.org/latest/samples/subsys/debug/fuzz/README.html is not working with NCS v3.0.2.
Reproduction path:
(btp2_ncs) t14@ThinkPad ~/Desktop/GCX/BT_PLATFORM/btplatform2/test $ export ZEPHYR_TOOLCHAIN_VARIANT=llvm (btp2_ncs) t14@ThinkPad ~/Desktop/GCX/BT_PLATFORM/btplatform2/test $ west build --no-sysbuild -b native_sim/native/64 zephyr/samples/subsys/debug/fuzz -- west build: generating a build system Loading Zephyr default modules (Zephyr base). -- Application: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/samples/subsys/debug/fuzz -- CMake version: 3.30.2 -- Found Python3: /home/t14/.virtualenvs/btp2_ncs/bin/python (found suitable version "3.12.3", minimum required is "3.10") found components: Interpreter -- Cache files will be written to: /home/t14/.cache/zephyr -- Zephyr version: 4.0.99 (/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr) -- Found west (found suitable version "1.4.0", minimum required is "0.14.0") -- Board: native_sim, qualifiers: native/64 -- Found host-tools: zephyr 0.17.0 (/home/t14/zephyr-sdk-0.17.0) -- Found toolchain: llvm (clang/ld) -- Found Dtc: /home/t14/zephyr-sdk-0.17.0/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version "1.6.0", minimum required is "1.4.6") -- Found BOARD.dts: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/boards/native/native_sim/native_sim_64.dts -- Generated zephyr.dts: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.dts -- Generated pickled edt: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/edt.pickle -- Generated zephyr.dts: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.dts -- Generated devicetree_generated.h: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/include/generated/zephyr/devicetree_generated.h -- Including generated dts.cmake file: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/dts.cmake Parsing /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/samples/subsys/debug/fuzz/Kconfig Loaded configuration '/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/boards/native/native_sim/native_sim_64_defconfig' Merged configuration '/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/samples/subsys/debug/fuzz/prj.conf' Configuration saved to '/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/.config' Kconfig header saved to '/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/include/generated/zephyr/autoconf.h' -- Found LlvmLld: /usr/lib/llvm-14/bin/ld.lld (found suitable version "14.0.6", minimum required is "14.0.0") -- The C compiler identification is Clang 14.0.6 -- The CXX compiler identification is GNU 13.3.0 -- The ASM compiler identification is Clang with GNU-like command-line -- Found assembler: /home/t14/.local/bin/clang -- Configuring done (5.1s) -- Generating done (0.1s) -- Build files have been written to: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build -- west build: building application [1/96] Preparing syscall dependency handling [5/96] Generating include/generated/zephyr/version.h -- Zephyr version: 4.0.99 (/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr), build: v4.0.99-ncs1-2 [94/96] Linking C executable zephyr/zephyr.elf Generating files from /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.elf for board: native_sim [95/96] Building native simulator runner, and linking final executable FAILED: zephyr/CMakeFiles/native_runner_executable zephyr/zephyr.exe /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/CMakeFiles/native_runner_executable /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.exe cd /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr && /usr/bin/make -f /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/scripts/native_simulator/Makefile all --warn-undefined-variables -r NSI_CONFIG_FILE=/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/NSI/nsi_config /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/NSI/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.elf.loc_cpusw.o: file not recognized: file format not recognized clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [/home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/zephyr/scripts/native_simulator/Makefile:131: /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build/zephyr/zephyr.exe] Error 1 ninja: build stopped: subcommand failed. FATAL ERROR: command exited with status 1: /usr/bin/cmake --build /home/t14/Desktop/GCX/BT_PLATFORM/btplatform2/test/build
I'd like to mention it is still working with mainline Zephyr.
BR,
Jakub
