Hi, On 10/09/2018 08:33, Tobin C. Harding wrote: > Hi, > > I'm unable to build the kernel using the O=path/to/out option. Am I > doing something brain dead? > > $ cd $KERNEL > $ make mrproper > $ cp path/to/valid/config/file .config Here you are copying a file in the source directory... > $ make O=/abs/path/to/output > ... > scripts/kconfig/conf --syncconfig Kconfig > *** > *** Configuration file ".config" not found! > *** > *** Please run some configurator (e.g. "make oldconfig" or > *** "make menuconfig" or "make xconfig"). > ... > > So I tried copying the .config file to the output directory > > $ cp .config /abs/path/to/output > $ make O=/abs/path/to/output > ... > Using /home/tobin/build/kernel/linux as source for kernel > /home/tobin/build/kernel/linux is not clean, please run 'make mrproper' > in the '/home/tobin/build/kernel/linux' directory. ...and here's where the kernel complains about it. You have to put your .config file in the out-of-tree build dir, not the source dir. BTW this also allows you to have multiple builds woth different configs in different directories, all from the same set of sources -- how would it be possible if the config were in the source dir? So, fix it as: cd $KERNEL make mrproper make O=/abs/path/to/output # BTW: can be also relative cd /abs/path/to/output cp path/to/valid/config/file .config make olddefconfig # might be not needed, but harmless anyway make -- Luca _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
