As of the latest code from the jdk7u-dev Mercurial repository,
java.lang.String no longer has offset or length fields. Instead, the
content fits exactly into the backing char array, so offset is
implicitly zero and length is the length of the array. The VM
previously relied on those fields being present, whereas this commit
handles the case where they are not.
In addition, I've made some changes to openjdk-src.mk to ensure that
we can build against both a stock OpenJDK 7 and an IcedTea-patched
version.
Recent versions of Cygwin's GCC no longer support the -mno-cygwin flag
(compilation works, but linking fails). However, Cygwin now includes
mingw64-i686-gcc, mingw64-x86_64-gcc, and related packages, so we use
those compilers instead. This has the added benefit that we can build
native x86_64 binaries on Cygwin now.
This will break the build for old Cygwin installs, so it will be
necessary to upgrade Cygwin and install the aforementioned packages to
build Avian going forward.
OpenJDK's compile.c and Avian's compile.cpp were both being compiled
to compile.o, which led to a conflict when building libavian.a. We
now append "-openjdk" to the object file name for OpenJDK code to
avoid such conflicts.
This mainly involves some makefile ugliness to work around bugs in the
native Windows OpenJDK code involving conflicting static and
not-static declarations which GCC 4.0 and later justifiably reject but
MSVC tolerates.
* add libnet.so and libnio.so to built-in libraries for openjdk-src build
* implement sun.misc.Unsafe.park/unpark
* implement JVM_SetClassSigners/JVM_GetClassSigners
* etc.
All the tests are passing for openjdk-src builds, but the non-src
openjdk build is crashing and there's trouble loading time zone info
from the embedded java.home directory.
As described in readme.txt, a standalone OpenJDK build embeds all
libraries, classes, and other files needed at runtime in the resulting
binary, eliminating dependencies on external resources.
