Re: [PATCH] fix dependency generation
From: Roman Zippel
Date: Sat Mar 31 2007 - 12:12:34 EST
On Sat, 31 Mar 2007, Sam Ravnborg wrote:
> The problem is that tristate symbol represent three values.
> =n => CONFIG_SYMBOL is undefined
> =y => CONFIG_SYMBOL is defined
> =m => COMFIG_SYMBOL_MODULE is defined
> The function split_config does not take into account the
> different values and 'fixing' this in fixdep is wrong.
> Because fixdep does not know if the variable is a tristate symbol or not
> so it can either blindly remove _MODULE (your patch)
> or each time it encounters _MODULE check for a symbol with and
> without _MODULE.
What really matters is that CONFIG_SYMBOL changed, one could optimize for
the COMFIG_SYMBOL_MODULE case, but I don't think it's worth it, especially
> The better fix is to teach the split_config function that
> for tristate symbols two files shall be created in the include/config
> hirachy. So for apm this gets:
if it requires thousands of new inodes for a feature which should be
> This will make kconfig behave correct the day that someone add a config
> symbol with a _MODULE suffix.
I'd rather reserve that namespace, if it allows for the simpler version to
just map all symbols to the basic config symbol name.
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