libsdl2 built fails when updating ffmpeg

[tome at qx.net]

>
>> On Mar 23, 2017, at 09:43, tome at QX.Net wrote:
>>
>>>
>>> On Mar 23, 2017, at 09:33, tome at QX.Net wrote:
>>>
>>>>> What version of Xcode and the command line tools do you have
>>>>> installed?
>>>>> If
>>>>> it's not the very latest for 10.7 (Xcode 4.6.3 and Command Line Tools
>>>>> (OS
>>>>> X Lion) for Xcode - April 2013) try updating to that.
>>>>
>>>> Thank you.  I am downloading xcode 4.6.3.
>>>
>>> Just out of curiosity, what version did you have before?
>>>
>>>> I have not been able to
>>>> determine my version of command line tools. Where on my mac do I check
>>>> the
>>>> version of command line tools?
>>>
>>> I don't actually know. But you should use the version of the CLT that
>>> matches the version of Xcode. So if you're upgrading to Xcode 4.6.3
>>> now,
>>> you should upgrade to the corresponding CLT (April 2013) at the same
>>> time.
>>>
>>>> Are there things I should backup before
>>>> starting these upgrades?
>>>
>>>
>>> Probably no need. In the unlikely event that you have problems with the
>>> new Xcode and CLT and want to go back to the old versions, you can
>>> follow
>>> Apple's instructions in the read me file for uninstalling them and then
>>> install the old versions again.
>>
>> My present xcode is 4.2.  Will download CLT April 2013 when xcode
>> download
>> is complete, 28 minutes. Tks
>
> Don't forget to "sudo port clean libsdl2" before trying again.
>
> According to http://www.openradar.me/12772011 it looks like indeed
> NSWindowDidChangeBackingPropertiesNotification and
> NSBackingPropertyOldScaleFactorKey were added in OS X 10.7.3, the release
> date for which was February 1, 2012. Xcode 4.2 was released October 12,
> 2011 so it would not know about those. Xcode 4.3 was released February 16,
> 2012 and would presumably contain these constants.

Success!  Xcode 4.6.3 and Command Line Tools (OS X Lion) for Xcode - April
2013 are installed and 'sudo port update outdated' finished successfully. 
Since I am at the end of the line with Xcode and CLT for Lion and have no
plans to update, should I be weary of 'port update outdated' in the
future?  Anyway, my hardiest thanks to all that this site going!!!