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Most of the developers have this question, "How to rebuild a given package without rebuilding everything from scratch" as it is time consuming.
Buildroot doesn’t keep track
of which package installs what files in the
output/staging
and
output/target
directories. However, implementing clean package
removal is on the TODO-list of Buildroot developers.Here are the steps do the rebuild of a package.
let us change directory to buildroot source root directory
$cd buildroot
Here we take an example of modifying raw.c file available in the util-linux package, and compile the package alone to get our new changes into the binary raw.
Step1: Modify the Source
In the buildroot/output/build directory you find the source of the package util-linux-<version no> lets say util-linux-2.26.2 is the package we are interested to re-compile
$gedit ./output/build/util-linux-2.26.2/disk-utils/raw.c
Save and exit after the modifications
Step2: Build the package
make
<package>-rebuild
, followed by make
or make <package>
$ make util-linux-rebuild
$ make
This completes the build if no compilation errors. The freshly built executable is
Step3: Use the new binary
Binary compiled with the new changes is available at path buildroot/output/build/util-linux-2.26.2/raw which you can copy to sbin folder of your root file-system.
For more details refer to Buildroot Documentation
please leave your comments, it will be encouraging :)
please leave your comments, it will be encouraging :)