RFR: 8210782: Upgrade HarfBuzz to the latest 2.3.1

[Sergey Bylokhov]

Hi, Phil.
Should we update the "harfbuzz.md" file as well?

On 28/02/2019 16:12, Philip Race wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8210782
> Webrev: http://cr.openjdk.java.net/~prr/8210782/
> 
> This change upgrades JDK 13 from using harfbuzz v 1.8.1 to v 2.3.1 which is currently the latest release of harfbuzz
> 
> harfbuzz is the 3rd party (external) C++ library used by OpenJDK for OpenType text layout.
> 
> In this large upgrade
> - Many files were renamed following the pattern of "hb-foo-private.cc" becoming "hb-foo.cc"
> - Many new files were added
> - A couple of files were deleted.
> 
> There are two additional changes on top of this
> I needed to import a published but un-released fix to enable building with Oracle Studio 12.6 on Solaris
> See https://github.com/harfbuzz/harfbuzz/commit/1e06282105a2d579aab32094cc7abc10ed231978
> I needed to reapply a fix made in JDK as JDK-8218965 that mirrors upstream to support building with the latest AIX compilers
> See https://github.com/harfbuzz/harfbuzz/commit/5c2bb1de8de31fecf0dae2ef905b896e42d39f1d
> This doesn't show up as a "diff" in the JDK webrev which demonstrates that it is correctly re-applied as previously.
> 
> There are two JDK files changed :
> (1)
> - The makefile has been updated to disable several new warnings.
> - To prevent harfbuzz from enabling warnings that were disabled - and avoid unknown pragma warnings we now define
> 
> -DHB_NO_PRAGMA_GCC_DIAGNOSTIC
> 
> 
> See hb.hh for what harfbuzz is doing there, but without this -D option we cannot
> disable warnings from the build since they are enabled in the code itself.
> 
> (2)
> - A couple of harfbuzz APIs were deprecated so I needed to make code changes in hb-jdk-font.cc to use
> the new API.
> 
> I have tested that this builds cleanly with all the current devkits (via the build servers) and that it also builds
> with the in progress work to provide a gcc 8.2 devkit for Linux
> I have also run all the related automated tests and performed some manual testing too.
> 
> -phil.


-- 
Best regards, Sergey.