RFR: 8145132: Initial updates for ios x86_64 mobile/dev builds.

[Bob Vandette]

Thomas, 

It is definitely not too late.  The push that Gary did was to our mobile/dev forest which is
not the final forest before integration into OpenJDK.  We pushed this to mobile/dev in order to 
allow interested developers to begin working with these changes and to provide us with feedback.

The final changesets will end up going to mobile/jdk9.  This is the staging forest that we will
eventually integrate into the mainline OpenJDK sources.

Bob.


> On Dec 18, 2015, at 9:17 PM, Thomas Stüfe <thomas.stuefe at gmail.com> wrote:
> 
> Hi Bob and Gary,
> 
> Thank you for correcting this! Respect also on this large porting effort, this looks like a lot of work and I am curious how this will turn out.
> 
> I took a short look at your changes - especially the android-related changes  - and have a number of further questions and suggestions . I hope that this is okay and the door is not already closed.
> 
> I'm away from any computer however (ironically typing this from an android device, so anything weird is due to auto correct :), so before Monday I will not be able to do anything.
> 
> I also think that this may be interesting to hotspot-runtime, because the changes to the OS layer are somewhat extensive, so I'll take the freedom and put them on the recipient list.
> 
> Kind regards, Thomas
> 
> On Dec 18, 2015 22:16, "Bob Vandette" <bob.vandette at oracle.com <mailto:bob.vandette at oracle.com>> wrote:
> I caught that and gave Gary an updated set of os_linux* files that hopefully corrected this.
> 
> Here’s the updated changes that Gary just pushed today.
> 
> http://hg.openjdk.java.net/mobile/dev/hotspot/rev/f1acc8fa34b8 <http://hg.openjdk.java.net/mobile/dev/hotspot/rev/f1acc8fa34b8>
> 
> 
> Bob.
> 
> > On Dec 18, 2015, at 4:11 PM, Thomas Stüfe <thomas.stuefe at gmail.com <mailto:thomas.stuefe at gmail.com>> wrote:
> >
> > Hi Gary,
> >
> > In the Linux os layer - especially in os_linux.cpp - I see you have
> > reintroduced old coding we just painstakingly removed because it was not
> > needed for modern Linuxes anymore. For instance, coding dealing with old
> > Linuxthreads (vs Nptl, which is ubiquitous nowadays) or workarounds for old
> > glibc bugs. Is this really needed for Android? Or is this just a merge
> > error?
> >
> > Kind regards, Thomas
> > On Dec 11, 2015 16:15, "Gary Adams" <gary.adams at oracle.com <mailto:gary.adams at oracle.com>> wrote:
> >
> >> Here's the initial upload of changes that provides support for the ios and
> >> android ports
> >> for the mobile/dev repos. While there have been some preliminary reviews
> >> of the code,
> >> there is still more work required before we will look for more thorough
> >> reviews
> >> and an integration to mobile/jdk9 repos.
> >>
> >>  Issue: https://bugs.openjdk.java.net/browse/JDK-8145132 <https://bugs.openjdk.java.net/browse/JDK-8145132>
> >>  Webrev: http://cr.openjdk.java.net/~gadams/8145132/webrev.00/ <http://cr.openjdk.java.net/~gadams/8145132/webrev.00/>
> >>
> >>
> >> Here's a simple configure script to generate a ios-x86_64 build for use
> >> with the iphone simulator. (uses homebrew 64 bit freetype from pkgconfig)
> >>
> >> export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
> >> export PATH=$JAVA_HOME/bin:~/homebrew/bin:$PATH
> >>
> >> bash ../../configure \
> >>    --openjdk-target=x86_64-macos-ios \
> >>    --with-boot-jdk=$JAVA_HOME \
> >>    --disable-warnings-as-errors \
> >>    --disable-headful \
> >>    --enable-static-build=yes \
> >>    --with-jvm-variants=minimal1
> >>
> >>
> >> Also, tested with i586-macos-ios target for 32 bit
> >> with a locally built --with-freetype 2.6.2.
> >>
>