[OpenJDK 2D-Dev] RFR: 8247872: Upgrade HarfBuzz to the latest 2.7.2
Philip Race
philip.race at oracle.com
Tue Nov 17 18:08:08 UTC 2020
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?
More information about the compiler-dev
mailing list