Build Configurations

New in version 4.0.0.

There are 2 types (build_type) of build configuration in PlatformIO:

release:Default configuration. A “release” configuration of your firmware/program does not contain symbolic debug information and is optimized for the firmware size or speed (depending on Development Platforms)
debug:A “debug” configuration of your firmware/program is compiled with full symbolic debug information and no optimization. Optimization complicates debugging, because the relationship between source code and generated instructions is more complex.

If you need to build a project in debug configuration, please use one of these options:


PIO Unified Debugger automatically switches to debug configuration when you do project debugging from PlatformIO IDE or use platformio debug command.

To avoid project rebuilding, please create a separate build environment and add build_type = debug. See example below where mydebug build environment will be used automatically by PIO Unified Debugger:

platform = ...
board = ...
framework = ...
... other common configuration

some_extra_options = ...

build_type = debug
some_extra_options = ...

Please note that you can set a default build environment per a project using default_envs option in Section [platformio].