Does make menuconfig start with current working config?

[guyuming]

I am installing Docker on Gentoo. After emerging, and run the kernel configuration check script, i am suggested to make some kernel configuration change and rebuild the kernel.

When i install Gentoo, i use the Genkernel tool, instead of make menuconfig.

Now, if i run make menuconfig, will it start with my current working kernel configuration, that is, the result of previous Genkernel run?

[NeddySeagoon]

guyuming,

Code: Select all

make menuconfig 

starts with the file .config at the top of the kernel source tree.

genkernel has an option to run menuconfig.
Think about how you will rebuild your initrd if you build your own kernel.

genkernel can be made to start from your preferred configuration too, rater than its own preset.

[guyuming]

guyuming,

Code: Select all

make menuconfig 

starts with the file .config at the top of the kernel source tree.

Thanks, I tried this but i did not find any at /usr/src/linux. Just realized that its a .dot file and i should use -a in ls,i.e.,

ls -a /usr/src/linux

and i found it there.

[guyuming]

subsequent kernel configuration change and rebuild cause an incident as described in: viewtopic-p-8539450.html

i use "make menuconfig" to add two configuration keys and save and "make" and "make install" ... and because of my ignorance, the machine failed to reboot. but i think i had saved the changed kernel configure and the "make" and "make install" were successful.

anyway, i fixed it with LiveCD boot and "genkernel --menuconfig all".

During this "genkernel --menuconfig all", i noticed that the previously added two keys were still unchecked and i have to added them again, so it looks to me that genkernel does not read from the .config file i saved in previous make menuconfig.

so, i guess that since i use genkernel initially, it might be better for me to keep using it subsequently.

The good thing is: i open "make menuconfig" again and see that the two keys added during "genkernel --menuconfig add" are still there. so it looks to me that although genkernel does not read from .config for make, it does save to .config for make.

[szatox]

Genkernel allows you to combine --oldconfig with --menuconfig.
This way you can modify whatever kernel config is already there (or the default one in case of file not found).

Also, --no-clean speeds up repeated compilations a lot. It is a bit risky (re-uses cached objects which may get out of sync and screw you over in the end), but it works often enough to be worth giving it a shot.

[guyuming]

just find out that genkernel will run make mrproper first, which will remove the /usr/src/linux/.config file and make my previous configuration lost.

the caveat is to run genkernel with --no-mrproper.

[figueroa]

Maybe this is a good place to start: https://wiki.gentoo.org/wiki/Kernel/Upgrade