Windows XP is not a supported platform, but all newer Windows should be able to build OpenJDK.
On Windows, it is important that you pay attention to the instructions in the Special Considerations.
Windows is the only non-POSIX OS supported by OpenJDK, and as such, requires some extra care. A POSIX support layer is required to build on Windows. For OpenJDK 9, the only supported such layer is Cygwin. (Msys is no longer supported due to a too old bash; msys2 and the new Windows Subsystem for Linux (WSL) would likely be possible to support in a future version but that would require a community effort to implement.)
-Internally in the build system, all paths are represented as Unix-style paths, e.g. /cygdrive/c/hg/jdk9/Makefile rather than C:\hg\jdk9\Makefile. This rule also applies to input to the build system, e.g. in arguments to configure. So, use --with-freetype=/cygdrive/c/freetype rather than --with-freetype=c:\freetype. For details on this conversion, see the section on Fixpath.
Internally in the build system, all paths are represented as Unix-style paths, e.g. /cygdrive/c/hg/jdk9/Makefile rather than C:\hg\jdk9\Makefile. This rule also applies to input to the build system, e.g. in arguments to configure. So, use --with-msvcr-dll=/cygdrive/c/msvcr100.dll rather than --with-msvcr-dll=c:\msvcr100.dll. For details on this conversion, see the section on Fixpath.
A functioning Cygwin environment is thus required for building OpenJDK on Windows. If you have a 64-bit OS, we strongly recommend using the 64-bit version of Cygwin.
Note: Cygwin has a model of continuously updating all packages without any easy way to install or revert to a specific version of a package. This means that whenever you add or update a package in Cygwin, you might (inadvertently) update tools that are used by the OpenJDK build process, and that can cause unexpected build problems.
@@ -379,22 +379,13 @@If a required library is not detected by configure, you need to provide the path to it. There are two forms of the configure arguments to point to an external library: --with-<LIB>=<path> or --with-<LIB>-include=<path to include> --with-<LIB>-lib=<path to lib>. The first variant is more concise, but require the include files an library files to reside in a default hierarchy under this directory. In most cases, it works fine.
As a fallback, the second version allows you to point to the include directory and the lib directory separately.
FreeType2 from The FreeType Project is required on all platforms. At least version 2.3 is required.
+FreeType2 from The FreeType Project is not required on any platform. The exception is on Unix-based platforms when configuring such that the build artifacts will reference a system installed library, rather than bundling OpenJDK's own copy.
sudo apt-get install libcups2-dev.sudo yum install cups-devel.sudo apt-get install libfreetype6-dev.sudo yum install freetype-devel.pkg install system/library/freetype-2.brew install freetype.Use --with-freetype=<path> if configure does not properly locate your FreeType files.
On Windows, there is no readily available compiled version of FreeType. OpenJDK can help you compile FreeType from source. Download the FreeType sources and unpack them into an arbitrary directory:
-wget http://download.savannah.gnu.org/releases/freetype/freetype-2.5.3.tar.gz
-tar -xzf freetype-2.5.3.tar.gzThen run configure with --with-freetype-src=<freetype_src>. This will automatically build the freetype library into <freetype_src>/lib64 for 64-bit builds or into <freetype_src>/lib32 for 32-bit builds. Afterwards you can always use --with-freetype-include=<freetype_src>/include and --with-freetype-lib=<freetype_src>/lib[32|64] for other builds.
Alternatively you can unpack the sources like this to use the default directory:
-tar --one-top-level=$HOME/freetype --strip-components=1 -xzf freetype-2.5.3.tar.gzUse --with-freetype-include=<path> and --with-freetype-lib=<path> if configure does not automatically locate the platform FreeType files.
CUPS, Common UNIX Printing System header files are required on all platforms, except Windows. Often these files are provided by your operating system.