[OE-core] [PATCH v4 02/12] acpica: work around flex 2.6.2 code generation issue

[Khem Raj]

On Mon, Jan 30, 2017 at 11:53 AM, Denys Dmytriyenko <denis at denix.org> wrote:
> On Sat, Jan 21, 2017 at 08:00:13PM -0800, Khem Raj wrote:
>> On Fri, Jan 20, 2017 at 6:54 AM, Patrick Ohly <patrick.ohly at intel.com> wrote:
>> > On Fri, 2017-01-20 at 15:12 +0100, Patrick Ohly wrote:
>> >> Without this patch, linking fails with a missing implementation of
>> >> yy_scan_string. This looks like a regression in flex, because 2.6.0 generated
>> >> different code that called PrParser_scan_string
>> >> resp. DtParser_scan_string.
>> >>
>> >> Working around that in acpica until this is better understood or fixed
>> >> in flex is the easiest solution for now.
>> >
>> > It turned out that flex 2.6.3 has a fix for the problem. But the github
>> > issue tracker for flex has several people who reported issues with 2.6.3
>> > (affecting gdb, binutils, grub) that we probably should wait a bit
>> > before trying to update to that release.
>>
>> I am seeing issues with qtwebkit as well.
>>
>> error: 'yyset_column' was not declared in
>>  this scope
>>
>> Similar errors for 'yyset_lineno' 'yylex' 'yylex_init_extra'
>> 'yyrestart' 'yylex_destroy'
>>
>> Haven't really dug into details but it seems to be caused by update to 2.6.2
>
> Having issues with flex 2.6.2 and doxygen as well. Supposed to be fixed in
> 2.6.3, but as mentioned above, that one breaks binutils, etc...
>
> Can we temporarily revert back to flex 2.6.0? It seems the update is breaking
> too many things, including numerous other layers, and the fix is not yet
> avaialble.
>

send a revert patch i would say

> --
> Denys