The Buildroot user manual
https://buildroot.org/downloads/manual/manual.htmlWhen 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. In such a situation, should the skeleton have any programs or libraries, they should be placed in /usr/bin , /usr/sbin and /usr/lib .
Buildroot - Making Embedded Linux Easy
https://buildroot.orgBuildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. Can handle everything. Cross-compilation toolchain, root filesystem generation, kernel image compilation and bootloader compilation. Is very easy.
The Buildroot user manual
buildroot.org › downloads › manualWhen 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. In such a situation, should the skeleton have any programs or libraries, they should be placed in /usr/bin , /usr/sbin and /usr/lib .