Yet another OpenJDK7/Windows build story

[Raffaello Giulietti]

I'm on Windows Vista 32-bit, SP2, Visual Studio 2008 Professional.
I'm building OpenJDK7 b92.


Mercurial
---------
Mercurial for Windows in its .msi form is self-contained and doesn't
require an additional Python installation. I've also added the
installation folder to my Windows PATH.

Download the forest extensions from
http://bitbucket.org/pmezard/hgforest-crew/
as explained there.
Do *not* download from
http://mercurial.selenic.com/wiki/ForestExtension
this simply does not work.
Copy hgforest-crew\forest.py to library.zip\hgext
Add the following Mercurial.ini to the Mercurial installation directory
--------
[extensions]
hgext.forest=
--------


FreeType2
---------
From
http://gnuwin32.sourceforge.net/packages/freetype.htm
download the *-bin.zip and *-dep.zip and unzip them.

OpenJDK erroneously expects a freetype.dll in the freetype lib folder.
To prevent complains during the build, hold your nose and copy
bin\freetype6.dll to lib\freetype.dll.


Ant and JAVA_HOME
-----------------
I've installed Ant 1.8.0.

OpenJDK can't tolerate JAVA_HOME being set. Ant uses the registry entry
if JAVA_HOME is unset, but expects a full JDK. Hence, check the Windows
regisitry to ensure that the appropriate key in
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment refers to
a JRE that's *inside* a JDK.


SDK and PATH
------------
Although the SKD will be on the PATH before starting the build, for some
obscure reason OpenJDK searches for rc.exe and mt.exe in VC\bin rather
than on the PATH. Again, hold your nose, close your eyes and copy them
in VC\bin.


Cygwin
------
I've installed cygwin 1.7.5 with the additions mentioned in the OpenJDK
Build README. I've also installed libintl-2 and vim via normal cygwin
setup. I don't remember if I've installed wget explicitly or if it came
with the default installation.


Make
----
I downloaded make 3.80 from one of the sites mentioned in
http://www.filewatcher.com/m/make-3.80-1.tar.bz2.286814.0.0.html
and installed it in cygwin with
tar xjf <yourDownloadsFolder>/make-3.80-1.tar.bz2


Other issues
------------
Apply the patch mentioned in
http://mail.openjdk.java.net/pipermail/build-dev/2010-May/002945.html
which certainly helps with b92 but which will be obsolete any time soon.


Getting the repository
----------------------
In a cygwin shell, cd to a folder of your choice (BUILD_HOME) and do

mkdir jdk7
hg fclone http://hg.openjdk.java.net/jdk7/jdk7/ jdk7
wget
http://www.java.net/download/openjdk/jdk7/promoted/b92/jdk-7-ea-plug-b92-windows-i586-06_may_2010.jar
java -jar jdk-7-ea-plug-b92-windows-i586-06_may_2010.jar

and install the binary plugs in BUILD_HOME


Environment variables
---------------------
Copy the following in cygwin's $HOME/env.bat
--------
call "%VS90COMNTOOLS%\vsvars32.bat"
bash
--------

Copy and adapt the following in cygwin's $HOME/env.sh (pay attention to
line breaks due to emailers)
--------
#!/usr/bin/bash

unset CLASSPATH
unset JAVA_HOME

CYGPATH=/usr/bin/cygpath
BUILD_HOME=$HOME
FREETYPE_HOME="C:\Downloads\FreeType"

export ANT_HOME=$(${CYGPATH} -u "C:\Downloads\Apache\apache-ant-1.8.0")

export PATH=$PATH:$(${CYGPATH} -u
"$FREETYPE_HOME\freetype-2.3.5-1-bin\bin"):$(${CYGPATH} -u
"$FREETYPE_HOME\freetype-2.3.5-1-dep\bin")

export ALT_BINARY_PLUGS_PATH="$BUILD_HOME/openjdk-binary-plugs"
export ALT_BOOTDIR=$(${CYGPATH} -s -m "C:\Program Files\Java\jdk1.6.0_18")
export ALT_COMPILER_PATH=$(${CYGPATH} -s -m "C:\Program Files\Microsoft
Visual Studio 9.0\VC\BIN")
export ALT_FREETYPE_LIB_PATH=$(${CYGPATH} -s -m
"$FREETYPE_HOME\freetype-2.3.5-1-bin\lib")
export ALT_FREETYPE_HEADERS_PATH=$(${CYGPATH} -s -m
"$FREETYPE_HOME\freetype-2.3.5-1-bin\include")
export ALT_DXSDK_PATH=$(${CYGPATH} -s -m "$DXSDK_DIR")

export OPENJDK=true
--------


Building
--------
WARNING: As unbelievable as it might sound, you need to be online to
build OpenJDK! During the build, some files are downloaded from the net.

In a cygwin shell do the following to set the VisualStudio vars, the
environment and to start the build.

./env.bat
. ./env.sh
cd $BUILD_HOME/jdk7
make sanity
make

On my three years old laptop the build proper takes about 2:30 hours.