[OpenJDK 2D-Dev] RFR: 8247872: Upgrade HarfBuzz to the latest 2.7.2

[Philip Race]

So maybe the actual *usage* of C++11 features slows it down.

I found this :-
https://stackoverflow.com/questions/34179434/is-compiling-with-c11-way-slower-than-with-c98

I really did not even think to measure the build time and I don't
think there's any JDK build parallelism in building a specific native 
library.
The build is parallel at a higher level but not at that lower level.

-phil

On 11/17/20, 10:00 AM, Florian Weimer wrote:
> * Philip Race:
>
>> There is more code in the newer version but not 4 times as much !
>> Harfbuzz now requires c++11 features (-std=c++11)
>> Possibly the C++ compiler you are using (you don't mention platform) is
>> slower in this mode.
> It's GCC 8 on Debian buster, which defaults to C++14.  And it's
> possible to write slow-to-compile C++ in all language modes.
>
> Is the Harfbuzz build parallelized?