> The Java2d do not use "half" float in the image layouts, so we can disable it 
> in the LittleCMS library during the build. It is possible to do using 
> [this](https://github.com/openjdk/jdk/blob/master/src/java.desktop/share/native/liblcms/lcms2.h#L85)
>  public option:
> 
> 
> // Uncomment to get rid of the tables for "half" float support
> // #define CMS_NO_HALF_SUPPORT 1
> 
> 
> This change cuts not only the unused by java2d functions but also 
> [such](https://github.com/openjdk/jdk/blob/739769c8fc4b496f08a92225a12d07414537b6c0/src/java.desktop/share/native/liblcms/cmshalf.c#L63)
>  tables.
> 
> The size of liblcms decreased by 20 kB on Linux(536024 vs 515152) and 15 kB 
> on windows(246784 vs 231424). On macOS the  win is only 300 bytes.

Sergey Bylokhov has updated the pull request with a new target base due to a 
merge or a rebase. The incremental webrev excludes the unrelated changes 
brought in by the merge/rebase. The pull request contains two additional 
commits since the last revision:

 - Merge remote-tracking branch 'upstream/master' into JDK-8295812
 - 8295812: Skip the "half float" support in LittleCMS during the build

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/10830/files
  - new: https://git.openjdk.org/jdk/pull/10830/files/2b66abd4..cb694af2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10830&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10830&range=00-01

  Stats: 180880 lines in 1463 files changed: 88306 ins; 60595 del; 31979 mod
  Patch: https://git.openjdk.org/jdk/pull/10830.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10830/head:pull/10830

PR: https://git.openjdk.org/jdk/pull/10830

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