The CMAKE_C_COMPILER / CMAKE_ASM_COMPILER: arm-none-eabi-gcc is not a full path and was not found in the PATH.

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Hello friends,

I’ve recently started working with CMake and have run into a problem that I’ve been sitting on for a few days and can’t find a solution to.

I have an application (based on a ThreadX RTOS) which I want to build with a Ninja build system. I have created a CMakeLists.txt file in my application directory.

In this CMakeLists.txt I include ThreadX as a library.
(It is worth mentioning that the ThreadX files are not located in a subfolder of my project but in a different directory)

I get the following error message when I run cmake:
“The CMAKE_C_COMPILER: arm-none-eabi-gcc is not a full path and was not found in the PATH.”
“The CMAKE_ASM_COMPILER: arm-none-eabi-gcc is not a full path and was not found in the PATH.”

If I change the line inside the ThreadX CMakeLists.txt file:
“project(threadx LANGUAGES C ASM)”
to:
set(${PROJECT_NAME} threadx)

I get no error message and the Ninja build system is created. I am then also able to create a working executable via Ninja.

Everything runs inside a Docker container and when I look for the PATH variable inside a running container it gives me the following:
“/work/gcc-arm-none-eabi-10.3-2021.10/bin”

Obviously the path to the toolchain is stored in the PATH variable in the Docker container.

I have added the line:
message(“PATH: $ENV{PATH}”)

directly after the command:
cmake_minimum_required(VERSION 3.0.0 FATAL_ERROR)

inside the ThreadX CMakeLists.txt file and the output of CMake was:
“/work/gcc-arm-none-eabi-10.3-2021.10/bin”

So CMake seems to find the toolchain PATH.

What am I doing wrong?
Can you please help me with that?

Greetings Daniel V.

2

Some things to try:

Enable the ASM language in your top level CMakeLists.txt file. You can just add ASM to the languages listed in the project() call within that file.

Take a look in the CMakeFiles/CmakeConfigureLog.yaml file in your build directory. Maybe there’s some clues in there that might uncover what’s happening.

3

Hi Craig,

thanks for your quick response.
The ASM language is already enabled in my top level CMakeLists.txt file.

project( Test_Project
VERSION 1.0.0
LANGUAGES C ASM)

CMake has not created a yaml file in the output directory.
It only created a cmake_install.cmake file.