On 12/30/17 9:13 AM, Anthony G. Basile wrote:
> On 12/30/17 9:08 AM, Michael Orlitzky wrote:
>> On 12/30/2017 07:22 AM, Anthony G. Basile wrote:
>>> use_if_iuse !nopie && return 0
>>
>> Does this work? The "use" function supports negation (undocumented, but
>> it's in the PMS), but I don't think use_if_iuse does.
>>
>
> Okay I'll read the code and test. You're right that I just assumed it
> worked liked "use" wrt negation so the semantics need to be checked.
>
> Thanks for looking this over carefully.
>
It looks like it would not work as expected because eutils.eclass has
in_iuse() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${#} -eq 1 ]] || die "Invalid args to ${FUNCNAME}()"
local flag=${1}
local liuse=( ${IUSE} )
has "${flag}" "${liuse[@]#[+-]}"
}
use_if_iuse() {
in_iuse $1 || return 1
use $1
}
So $1 in use_if_iuse binds to "!nopie" and then in in_iuse again to
"!nopie" which then messes up the has line, looking for a flag named
"!nopie" in IUSE which will always be true.
I'll change that line to
use_if_iuse nopie || return 0
Grepping the tree, I see only instances of
if ! use_if_iuse X ...
which is good.
--
Anthony G. Basile, Ph.D.
Gentoo Linux Developer [Hardened]
E-Mail : bluen...@gentoo.org
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