I'm following below command to rebuild u-boot
4. Rebuild u-boot
$ bitbake -c cleansstate u-boot-ls1
$ bitbake -c patch u-boot-ls1
$ bitbake -c compile u-boot-ls1
$ bitbake u-boot-ls1
first time, it's ok but after build, i modify and rebuild many times.
then modified files are not effective. so i have to command "bitbake -c cleansstate u-boot-ls1".
then modified files are deleted.... so i'm doing backup files and merge again after clean / patch.
how should i rebuild many times.....?
or to build u-boot with yocto project, should i clean every time?