Omair,
Since this entirely affects a 2D component, please include 2d-dev in this discussion. I would have been 'surprised' to see this change if I hadn't just spotted this thread.
And I believe this change should be integrated via the 2D forest.
Yes, please support the old build system.
I am not sure what, if any, runtime problems might occur from using a different
version. We've generally been able to swap in newer versions of ICU without
much trouble, but I recommend to run appropriate tests before shipping ..
Note that JDK8 in fact has a very "current" ICU with some security fixes.
So I would not recommend using the native lib on a system with an older ICU.

-phil.


On 6/5/2013 2:21 AM, Erik Joelsson wrote:
Hello,

Is it required to remove the font/layout dir to use the system version? I would expect USE_EXTERNAL_ICU_LE=true would add an exclude for that directory to SetupNativeCompilation,BUILD_LIBFONTMANAGER.

If you expect to delete the source tree on your side, why not have configure check for the existence of the font/layout directory to determine the default behavior for system vs bundled?

It seems you forgot to add USE_EXTERNAL_ICU_LE to spec.gmk.in.

Are ICU_LE_CFLAGS and ICE_LE_LIBS supposed to be empty?

/Erik

On 2013-06-04 23:30, Omair Majid wrote:
Hi,

webrev:
http://cr.openjdk.java.net/~omajid/webrevs/system-icu/00/

This implements support for linking against the system-installed ICU
instead of building and linking against the bundled copy of ICU in
OpenJDK8. Now someone building OpenJDK can delete the .../font/layout
directory and use configure to build completely against the system
headers and libraries.

I had to move SunLayoutEngine.cpp so the #include would be "layout/..",
which is where the system-installed ICU headers are. It now also matches
the class name (which is sun.font.SunLayoutEngine, not
sun.font.layout.SunLayoutEngine).

I tried to keep all new ICU-related changes next to the existing
freetype-using-logic since they are both text related.

FYI: I am quite sure the build breaks if built using the old build
system; I will fix that next.

Any comments or suggestions?

Thanks,
Omair


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