[yocto] Exporting variables and extending PATH for Embedded Java

[Satya Swaroop Damarla]

Hi Guys,

I am planning to install embedded java runtime environment and it just
needs the following steps
1. Creation of directory /usr/share/java
2. Copy the files to this directory
3. Creating a environment variable
JAVA_HOME=/usr/share/java/ejre1.7.0_10/bin
4. Extending the variable PATH=$PATH:$JAVA_HOME

here is my recipe... The first and second parts are done but I am not able
to figure out the 3rd and 4th steps.. Here is my recipe

DESCRIPTION = "Embedded Java from Oracle/Sun"

LICENSE_FLAGS = "oracle_java"
LICENSE = "Oracle_Binary_Code_License_Agreement"
LIC_FILES_CHKSUM = "\

file://${WORKDIR}/${JDK_JRE}${PV}_${PV_UPDATE}/LICENSE;md5=98f46ab6481d87c4d77e0e91a6dbc15f
\

file://${WORKDIR}/${JDK_JRE}${PV}_${PV_UPDATE}/COPYRIGHT;md5=f5f3c0856f2ca27413b55b6ca50c897e
\

file://${WORKDIR}/${JDK_JRE}${PV}_${PV_UPDATE}/THIRDPARTYLICENSEREADME.txt;md5=c339b34e3da6673d2c5950d0f8808f8c
\
        "

SRC_URI =
"file:///home/damarla/yocto/ejre-7u10-fcs-b18-linux-arm-vfp-client_headful-28_nov_2012.gz"

SRCREV ?= "${AUTOREV}"


SRC_URI[md5sum] = "8a6f08f39f916fcdbe0d741d550741ad"
SRC_URI[sha256sum] =
"194a522bc27cf4746a0d8ca1e947b13832166ecd6f4f2fbaf5ce1df2a7493d43"

inherit allarch

do_install () {
        install -d ${D}/usr/share/java/
        cp -r ejre1.7.0_10 ${D}/usr/share/java
}


Help is deeply appreciated!
Greets,
Satya
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