[FFmpeg-devel] [PATCH] configure: Allow log2 with msvc12 onwards

[Matt Oliver]

>
> I missed this, you say only 2010 is a problem, but the comment in
>> configure only says 2013 works fine, so what about 2012??
>
>
> The 2012 version is msvc11 (released 2012 but version 11).
>

Sorry to be clear the log2 is only an error as it is incorrectly detected
as available under msvc10 (2010). However no version prior to msvc12 (2013)
has log2 so to ensure no error has occurred these versions should always be
disabled. msvc12 (2013) has a functioning log2 and is detected as such and
should be left as enabled. So the code only disables for versions prior to
msvc12 that may incorrectly detect log2.