RFR: 8193017: Import freetype sources into OpenJDK source tree

[Philip Race]

Just to be clear, I mean we don't import it to each of the source files.
But it is there in the file legal/freetype.md in this webrev.

On 3/9/18, 3:26 PM, Philip Race wrote:
>
> No.
>
> -phil.
>
> On 3/9/18, 3:23 PM, Sergey Bylokhov wrote:
>> Hi, Phil
>> Headers of the new files refer to LICENSE.TXT. Should we import it as 
>> well?
>>
>> On 09/03/2018 14:10, Phil Race wrote:
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8193017
>>> Webrev: http://cr.openjdk.java.net/~prr/8193017/index.html
>>>
>>> This fix is will make building openjdk somewhat easier as it removes
>>> the dependence on an OpenJDK developer on Windows or Mac going
>>> off and downloading and building freetype source themselves .. or
>>> using XQuartz on Mac etc.
>>>
>>> It also means it will be somewhat easier for updating official OpenJDK
>>> builds to use a more modern freetype. The pre-compiled binary is a pain
>>> inside Oracle too.
>>>
>>> On Linux and Solaris platforms the build will still default to using
>>> the system installed freetype library. However this can easily be
>>> over-ridden by adding  a configure parameter : --with-freetype=bundled
>>> The other valid option being "system" which, is of however never not 
>>> valid
>>> on Windows  or Mac. So --with-freetype include is no longer a path.
>>> The auto-discovery of the location of system library and headers has
>>> worked for me on Solaris and OEL/RHEL as well as Ubuntu 17.10
>>>
>>> But just in case it doesn't you can also still use
>>> --with-freetype-include and --with-freetype-lib
>>> which must both be specified and imply --with-freetype=system
>>>
>>> The docs have been updated to remove discussion of the obsoleted 
>>> requirements
>>>
>>> Sharp eyes will also notice that it now makes Freetype the preferred 
>>> rasteriser
>>> over the closed source T2K, even for Oracle JDK builds :
>>>
>>> http://cr.openjdk.java.net/~prr/8193017/src/java.desktop/share/classes/sun/font/FontScaler.java.sdiff.html 
>>>
>>>
>>> Since freetype != t2k there *will* be some very minor rasterization 
>>> differences.
>>> Such cases are likely not a bug, but a feature :-)
>>> Since we previously and now mostly used GDI for LCD text on Windows and
>>> also generally defer to CoreText on Mac, the importance of the 
>>> differences
>>> may not be great.
>>> But if you see any really bad rendering (I haven't) let me know.
>>>
>>> make/devkit/createMacosxDevkit6.sh is an empty diff  .. I was
>>> proposing to remove the devkit references to freetype but it was 
>>> suggested
>>> to leave that alone for now.
>>>
>>> 99% of the change is simply importing the freetype 2.9 files "as is"
>>> The UPDATING.txt file provides some background on the import process.
>>>
>>> I have built this every-which-way and tested it too .. it is of 
>>> course possible
>>> there's a problem I've missed so try it out yourself if you can.
>>>
>>> -phil.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>