The Buildroot user manual
https://buildroot.org/downloads/manual/manual.htmlIn some cases, Buildroot should rebuild the entire system, in some cases, only a specific subset of packages. ... When BR2_ROOTFS_MERGED_USR is enabled, then the custom skeleton must not contain the /bin, /lib or /sbin directories, as Buildroot will create them as symbolic links to the relevant folders in /usr.
rootfs - buildroot step by step - Code Examples
code-examples.net › en › qhow to rebuild rootfs in buildroot To force the rootfs to be rebuilt (in this case an initramfs) delete three hidden files in the output/build/linux-x.xx.xx directory .stamp_images_installed .stamp_initramfs_rebuilt .stamp_target_installed I am going to setup build environment to make my own linux embedded system for AT91SAM9X25 Board.
The Buildroot user manual
buildroot.org › downloads › manualBuildroot does not attempt to detect what parts of the system should be rebuilt when the system configuration is changed through make menuconfig, make xconfig or one of the other configuration tools. In some cases, Buildroot should rebuild the entire system, in some cases, only a specific subset of packages.