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Known-Build-Environment-Problems

Cygwin on Windows​

Cygwin on Windows is no longer supported. Use Windows Subsystem for Linux (WSL) instead.

GNU ARM Toolchain Version​

To install or update the GNU Arm Embedded Toolchain, run:

make arm_sdk_install

Linking Unit Tests may fail.​

When trying to build and run the unittests on Linux or WSL, you may encounter this problem:

linking ../../obj/test/alignsensor_unittest/alignsensor_unittest
/usr/bin/ld: cannot find -lBlocksRuntime
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Problem is a missing library, install it this way:

$ sudo apt install libblocksruntime-dev

Compiling Unit Tests fails with errors​

Betaflight has been updated to work with recent clang version 18 and will be the official supported (required) version from now on. The Makefile has been updated to be compatible with this version to run the tests successfully. make test depends on a specific clang compiler. The codebase and tools are updated to work with version 18. Ubuntu 24.04 LTS (including on the Windows Subsystem for Linux) should work with the installed clang version. Install clang on Ubuntu (including on WSL) using:

$ sudo apt update
$ sudo apt install clang

GLIBC issues on Alpine​

Please see: Alpine wiki