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Post-build, post-image, and other build scripts may run some commands in parallel, for example to parallelize xargs, Makefiles, etc. Export PARALLEL_JOBS to these scripts so they can enforce the same job limits that other Buildroot packages use. Signed-off-by: Brandon Maier <brandon.maier@collins.com> Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
45 lines
1.5 KiB
Plaintext
45 lines
1.5 KiB
Plaintext
// -*- mode:doc; -*-
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// vim: set syntax=asciidoc:
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[[debugging-buildroot]]
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== Debugging Buildroot
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It is possible to instrument the steps +Buildroot+ does when building
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packages. Define the variable +BR2_INSTRUMENTATION_SCRIPTS+ to contain
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the path of one or more scripts (or other executables), in a
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space-separated list, you want called before and after each step. The
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scripts are called in sequence, with three parameters:
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- +start+ or +end+ to denote the start (resp. the end) of a step;
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- the name of the step about to be started, or which just ended;
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- the name of the package.
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For example :
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----
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make BR2_INSTRUMENTATION_SCRIPTS="/path/to/my/script1 /path/to/my/script2"
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----
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The list of steps is:
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- +extract+
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- +patch+
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- +configure+
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- +build+
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- +install-host+, when a host-package is installed in +$(HOST_DIR)+
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- +install-target+, when a target-package is installed in +$(TARGET_DIR)+
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- +install-staging+, when a target-package is installed in +$(STAGING_DIR)+
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- +install-image+, when a target-package installs files in +$(BINARIES_DIR)+
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The script has access to the following variables:
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- +BR2_CONFIG+: the path to the Buildroot .config file
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- +HOST_DIR+, +STAGING_DIR+, +TARGET_DIR+: see
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xref:generic-package-reference[]
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- +BUILD_DIR+: the directory where packages are extracted and built
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- +BINARIES_DIR+: the place where all binary files (aka images) are
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stored
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- +BASE_DIR+: the base output directory
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- +PARALLEL_JOBS+: the number of jobs to use when running parallel processes.
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