j2sdk-1.4.0_01

Introduction to j2sdk (binary version)

Download location (HTTP):       http://freshmeat.net/projects/sunjdk
Download location (FTP):        
Version used:                   1.4.0_01
Package size:                   39.8 MB
Estimated Disk space required:  82 MB

The j2sdk package contains Sun's java development environment - precompiled. This is needed to fulfull the circular dependency when we compile java.

Installation of j2sdk

Before installing j2sdk, you need to download libstdc++-libc6.1-1.so.2.bz2 from ftp://ftp.linuxfromscratch.org/blfs-patches/cvs and decompress it to your source directory.

Install j2sdk by running the following commands:

mkdir java &&
mv j2sdk*.bin java &&
cd java &&
chmod 711 j2sdk*.bin &&
./j2sdk*.bin &&
mv j2sdk*.bin .. &&
cp ../libstdc++-libc6.1-1.so.2 j2sdk1.4.0_01/jre/lib/i386

Test the installation with the following commands:

export JAVA_HOME=$PWD/j2sdk1.4.0_01 &&
j2sdk1.4.0_01/jre/bin/java -version

If you get a version line, a description of the runtime environment and a desrciption of the client VM (virtual machine), you are ready to go.

If you are not going to compile java from scratch, move the java tree to /opt:

mv j2sdk1.4.0_01 /opt/java

Command explanations

chmod 711 j2sdk*.bin : Makes the downloaded bin file executible.

cp ../libstdc++-libc6.1-1.so.2 j2sdk1.4.0_01/jre/lib/i386 : Puts the linked gcc2 library where java can find it.

Configuring j2sdk

export JAVA_HOME=<path to>/j2sdk1.4.0_01
export PATH=$PATH:$JAVA_HOME/bin

Introduction to j2sdk

Download location (HTTP):       http://wwws.sun.com/software/java2/download.html
Download location (FTP):        
Version used:                   1.4.0
Package size:                   52.2 MB
Estimated Disk space required:  1186 MB

The j2sdk package contains Sun's java development environment. This is useful for developing java programs and provides the runtime environment necessary to run java programs. It also includes a plug-in for browsers so that they can be java aware.

j2sdk depends on:
xfree86-4.2.1, zip-2.3, unzip-5.50, cpio-2.5, tcsh-6.12 and j2sdk-1.4.0_01

Installation of j2sdk

To install j2sdk, you need to download the following files into your source directory:

From the download location (registration required)
j2sdk-1.4.0-src-scsl.zip
j2sdk-1.4.0-motif-linux-i386.zip
j2sdk-1.4.0-mozilla_headers-unix.zip
From ftp://ftp.linuxfromscratch.org/blfs-patches/cvs
j2sdk-gcc31.patch

You should be in the java directory under your source directory. Verifiy that environment is set as described in the configuration section of the binary installation. If not:

export JAVA_HOME=$PWD/j2sdk1.4.0_01
export PATH=$PATH:$JAVA_HOME/bin

Unzip and set the install of j2sdk by running the following commands:

for i in ../j2sdk-1_4_0-*.zip; do unzip $i; done &&
patch -Np1 -i ../j2sdk-gcc31.patch &&
export SRC=$PWD &&
export ALT_BOOTDIR="$JAVA_HOME" &&
export ALT_MOTIF_DIR=$SRC &&
export ALT_MOZILLA_PATH=$SRC &&
export ALT_DEVTOOLS_PATH="/usr/bin" &&
export MILESTONE="blfscompiled" &&
export BUILD_NUMBER=`date +%s` &&
export DEV_ONLY=true &&
export OTHER_LDFLAGS="-lpthread" &&
unset JAVA_HOME &&
unset CLASSPATH &&
export OTHER_CFLAGS=${CFLAGS} &&
export OTHER_CXXFLAGS=${CXXFLAGS} &&
unset CFLAGS &&
unset CXXFLAGS

Make will not find cpio unless it is in the /usr directory. Create this link with the following command:

ln -s /usr/bin/cpio /bin/cpio

Make and Install j2sdk with the following commands:

cd $SRC/control/make &&
make &&
cd $SRC/control/build/linux-i386 &&
mkdir -p /opt/java &&
cp -a j2sdk-image /opt/java/j2sdk-1.4.0 &&
cd /opt/java &&
ln -s j2sdk-1.4.0 j2sdk

Test the installation with the following commands:

export JAVA_HOME=/opt/java/j2sdk  &&
$JAVA_HOME/jre/bin/java -version

If you get a version line, a description of the runtime environment and a desrciption of the client VM (virtual machine), you are ready to go.

Command explanations

export JAVA_HOME=$PWD/j2sdk1.4.0_01 : This command sets the location of the working java.

export ALT_BOOTDIR="$JAVA_HOME" : This command set the compiler variable that will execute the java compiler when needed during make.

export ALT_MOTIF_DIR=$SRC : This sets the variable that points to where you unzipped the motif headers.

export ALT_MOZILLA_PATH=$SRC : This sets the variable that points to where you unzipped the mozilla headers.

export ALT_DEVTOOLS_PATH="/usr/bin" : This changes the default to the correct value.

export ALT_MILESTONE="blfscompiled" : This will help you identify this compiled version of java by appending this to the version in the output to "java -version".

export BUILD_NUMBER=`date +%s` : This will help you identify this compiled version of the runtime environment and virtual machine by appending this information to the version in the output to "java -version".

export DEV_ONLY=true : This command eliminates compiling the documentation and eliminates a dependency for rpm.

export OTHER_LDFLAGS="-lpthread" : This command corrects compiling errors related to the pthread variables.

unset JAVA_HOME : This clears the JAVA_HOME variable and prevents misdirection during compile.

unset CLASSPATH : This clears the CLASSPATH variable and prevents misdirection during compile.

export OTHER_CFLAGS=${CFLAGS} : This makes j2sdk compile using your CFLAGS for optimizations.

export OTHER_CXXFLAGS=${CXXFLAGS} : This makes j2sdk compile using your CXXFLAGS for optimizations.

unset CFLAGS : Now that the optimizations are loaded, this clears the variable.

unset CXXFLAGS : Now that the optimizations are loaded, this clears the variable.

Configuring j2sdk

export JAVA_HOME=/opt/java/j2sdk
export PATH=$PATH:$JAVA_HOME/bin

Contents

The j2sdk package contains appletviewer, extcheck, idlj, jar, jarsigner, java, javac, javadoc, javah, javap, jdb, keytool, native2ascii, orbd, policytool, rmic, rmid, rmiregistry, rmiregistry, serialver, servertool and tnameserv.

Description