Re: what's the fast way to enable a config item?

[Derek Cheugn <rcheng881@student.glendale.edu>]

On Tue, Jan 05, 2016 at 12:27:05PM +0200, Marian Marinov wrote:
> You simply need to enable it in your .config file and rebuild.

that simply doesn't always work; for example I started with a minimal defconfig
and want to enable SENSORS_APPLESMC, from nconfig I can search this one
get it depends HWMON && INPUT, if the current .config doesn't have HWMON
and I just write SENSORS_APPLESMC=m there, the following rebuild will deselect
SENSORS_APPLESMC actually;

┌── Search Results ───────────────────────────────────────────────────┐
│                                                                     │
│ Symbol: SENSORS_APPLESMC [=m]                                       │
│ Type  : tristate                                                    │
│ Prompt: Apple SMC (Motion sensor, light sensor, keyboard backlight) │
│   Location:                                                         │
│     -> Device Drivers                                               │
│       -> Hardware Monitoring support (HWMON [=y])                   │
│   Defined at drivers/hwmon/Kconfig:299                              │
│   Depends on: HWMON [=y] && INPUT [=y] && X86 [=y]                  │
│   Selects: NEW_LEDS [=y] && LEDS_CLASS [=y] && INPUT_POLLDEV [=y]   │
│                                                                     │
│                               <OK>                                  │
└─────────────────────────────────────────────────────────────────────┘

I am asking a config method that accepts a list of config items (or module names),
let it make sure all depended items also be selected?


thanks,

> 
> Marian
> 
> On 12/25/2015 03:30 AM, Derek Cheugn wrote:
> > hi all,
> >
> > I have a simple question (have searched but didn't get any good answer
> > yet):
> >
> > what's the best way to enable a config item without interactive
> > interface? if I know the module name, I can find the CONFIG_ name by
> > this: then in menuconfig to search SENSORS_APPLESMC to enable it;
> >
> >     $ find -name Makefile |xargs grep -w applesmc
> >     ./drivers/hwmon/Makefile:obj-$(CONFIG_SENSORS_APPLESMC)	+= applesmc.o
> >
> > but is there a good way to enable it without interactive interface?
> >
> > the interactive config interfaces (menuconfig/gconfig/xconfig) are good
> > for one or two configs, but when I want to enable a list of modules,
> > this solution is not scalable;
> >
> > I've tried localmodconfig with LSMOD= env variable, but the
> > localmodconfig doesn't seem to be working in this way, I feel it's
> > working by an elimination way, to start from a known to be working
> > config (maybe from a distro or somewhere)
> >
> >     $ LSMOD=~/tmp/modules-merged make localmodconfig
> >
> > while, I want to start with `make defconfig` and enable a list of config
> > needed; that to accept a list of CONFIG_* names, or a list of modules
> > name, does anyone if such a config method exists?
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