1// -*- mode:doc; -*- 2// vim: set syntax=asciidoc: 3 4[[debugging-buildroot]] 5 6== Debugging Buildroot 7 8It is possible to instrument the steps +Buildroot+ does when building 9packages. Define the variable +BR2_INSTRUMENTATION_SCRIPTS+ to contain 10the path of one or more scripts (or other executables), in a 11space-separated list, you want called before and after each step. The 12scripts are called in sequence, with three parameters: 13 14 - +start+ or +end+ to denote the start (resp. the end) of a step; 15 - the name of the step about to be started, or which just ended; 16 - the name of the package. 17 18For example : 19 20---- 21make BR2_INSTRUMENTATION_SCRIPTS="/path/to/my/script1 /path/to/my/script2" 22---- 23 24The list of steps is: 25 26 - +extract+ 27 - +patch+ 28 - +configure+ 29 - +build+ 30 - +install-host+, when a host-package is installed in +$(HOST_DIR)+ 31 - +install-target+, when a target-package is installed in +$(TARGET_DIR)+ 32 - +install-staging+, when a target-package is installed in +$(STAGING_DIR)+ 33 - +install-image+, when a target-package installs files in +$(BINARIES_DIR)+ 34 35The script has access to the following variables: 36 37 - +BR2_CONFIG+: the path to the Buildroot .config file 38 - +HOST_DIR+, +STAGING_DIR+, +TARGET_DIR+: see 39 xref:generic-package-reference[] 40 - +BUILD_DIR+: the directory where packages are extracted and built 41 - +BINARIES_DIR+: the place where all binary files (aka images) are 42 stored 43 - +BASE_DIR+: the base output directory 44