// -*- mode:doc; -*- // vim: set syntax=asciidoc: [[debugging-buildroot]] == Debugging Buildroot It is possible to instrument the steps +Buildroot+ does when building packages. Define the variable +BR2_INSTRUMENTATION_SCRIPTS+ to contain the path of one or more scripts (or other executables), in a space-separated list, you want called before and after each step. The scripts are called in sequence, with three parameters: - +start+ or +end+ to denote the start (resp. the end) of a step; - the name of the step about to be started, or which just ended; - the name of the package. For example : ---- make BR2_INSTRUMENTATION_SCRIPTS="/path/to/my/script1 /path/to/my/script2" ---- The list of steps is: - +extract+ - +patch+ - +configure+ - +build+ - +install-host+, when a host-package is installed in +$(HOST_DIR)+ - +install-target+, when a target-package is installed in +$(TARGET_DIR)+ - +install-staging+, when a target-package is installed in +$(STAGING_DIR)+ - +install-image+, when a target-package installs files in +$(BINARIES_DIR)+ The script has access to the following variables: - +BR2_CONFIG+: the path to the Buildroot .config file - +HOST_DIR+, +STAGING_DIR+, +TARGET_DIR+: see xref:generic-package-reference[] - +BUILD_DIR+: the directory where packages are extracted and built - +BINARIES_DIR+: the place where all binary files (aka images) are stored - +BASE_DIR+: the base output directory