Compilation error with Zephyr using C++ for stm nucelo board

danilomessina · November 3, 2025, 6:10pm

Hi,
I would like to develop my embedded software in c++20 (using STL such as vector, map, list, etc..) for stm nucleo board F466RE.
The project builds succesfully.

Memory region         Used Size  Region Size  %age Used
           FLASH:      112716 B       512 KB     21.50%
             RAM:       14080 B       128 KB     10.74%
     BACKUP_SRAM:          0 GB         4 KB      0.00%
        IDT_LIST:          0 GB        32 KB      0.00%
Checking size .pio/build/nucleo_f446re/firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [=         ]  10.7% (used 14061 bytes from 131072 bytes)
Flash: [==        ]  20.6% (used 107972 bytes from 524288 bytes)
Building .pio/build/nucleo_f446re/firmware.bin

But the compiler throws the error: ‘vector’ file not found.

Main.cpp

extern "C"{
    #include <zephyr/kernel.h>
    #include <zephyr/device.h>
    #include <zephyr/devicetree.h>
    #include <zephyr/drivers/pwm.h>
    #include <zephyr/drivers/gpio.h>
}

#include <vector>

#define MOTORS_NODE DT_NODELABEL(motors_)
    
int main() {

std::vector<int> test;

   while (true) {
        k_msleep(1000);
        
    }
   return 0;
}

.ini file

[env:nucleo_f446re]
platform = ststm32
board = nucleo_f446re
framework = zephyr
build_type = debug
upload_protocol = stlink
extra_scripts = no_atexit.py

build_flags =
    -std=gnu++20
    -std=c++20
    -fexceptions

build_unflags =
    -std=gnu++11 #only use c++20
    -nostdinc

prj.conf


# Enable C++ and new stdlib and c++20 features
CONFIG_CPP=y
CONFIG_NEWLIB_LIBC=y
CONFIG_GLIBCXX_LIBCPP=y
CONFIG_STD_CPP20=y
CONFIG_REQUIRES_FULL_LIBCPP=y
CONFIG_CPP_EXCEPTIONS=y
CONFIG_CPP_RTTI=n

# Threading and memory
CONFIG_MAIN_STACK_SIZE=5000
CONFIG_HEAP_MEM_POOL_SIZE=1024
CONFIG_THREAD_STACK_INFO=y
CONFIG_THREAD_MONITOR=y
CONFIG_TIMESLICING=y
CONFIG_MULTITHREADING=y

# Drivers
CONFIG_GPIO=y
CONFIG_SERIAL=y
CONFIG_PWM=y
CONFIG_PWM_STM32=y

# Logging
CONFIG_LOG=y
CONFIG_CONSOLE=y
CONFIG_LOG_DEFAULT_LEVEL=3

CMakeLists.txt

cmake_minimum_required(VERSION 3.20.0)
set(DTC_OVERLAY_FILE ../nucleo_f446re.overlay)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(Zephyr_RTOS_STM-nucleo)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CONFIG_LIB_CPP ON)
set(CONFIG_NEWLIB_LIBC ON)

FILE(GLOB app_sources ../src/*.c*)
target_sources(app PRIVATE ${app_sources})
target_compile_options(app PRIVATE -fexceptions)

maxgerhardt · November 4, 2025, 5:34pm

No, the IDE intellisense doesn’t find it. The build works.

clang(d) is not the intended intellisense provider with the PlatformIO extension: Microsoft C/C++ is. So what clang extension as your intellisense or linter do you have installed and how do you have it configured?

danilomessina · November 5, 2025, 4:45pm

In the configuration page the intellisense mode is set to default (meaning it’s using macos-clang-x64)
Here are the info from log diagnostic:

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cpptools version (native): 1.28.3.0
Current database path: /Users/danilomessina/Library/Caches/vscode-cpptools/e1164c6d0370f3e3bc3857e0a929a2ab/.browse.VC.db
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