Build script of OpenJDK ref: http://qiita.com/informationsea/items/64fd10329ba8539c3b14 (Japanese)

build-javafx.sh

#!/bin/bash

source openjdk-common.sh
run mkdir -p $JAVA_BUILD_DIR
export JAVA_HOME=/usr/local/jvm/openjdk-1.8.0_${JAVA_UPDATE}

pushd $JAVA_BUILD_DIR
if [ ! -d rt-8u${JAVA_UPDATE}-b${JAVAFX_BUILDNUM} ]; then
    run tar xzf $ARCHIVE_DIR/8u${JAVA_UPDATE}-b${JAVAFX_BUILDNUM}.tar.gz
fi

if [ ! -d gradle-1.8 ];then
    run unzip $ARCHIVE_DIR/gradle-1.8-bin.zip
fi

export PATH=$JAVA_HOME/bin:$JAVA_BUILD_DIR/gradle-1.8/bin:$PATH

pushd rt-8u${JAVA_UPDATE}-b${JAVAFX_BUILDNUM}

sudo rm $JAVA_HOME/jre/lib/ext/jfxrt.jar

run gradle tasks
run gradle projects
run gradle

run sudo cp -R ./build/sdk/* $JAVA_HOME/
run sudo cp -R ./build/sdk/rt/* $JAVA_HOME/jre/
run sudo rm -r $JAVA_HOME/rt

popd
popd

build-openjdk.sh

#!/bin/bash

source openjdk-common.sh

run mkdir -p $JAVA_BUILD_DIR

pushd $JAVA_BUILD_DIR

run tar xzf $ARCHIVE_DIR/$BASE_FILENAME
for i in $SUB_PROJECTS; do
  if [ ! -d ${REPOSITORY_NAME}-${BASE_FILENAME%.tar.gz}/$i ];then
    if [ ! -d ${i}-${BASE_FILENAME%.tar.gz} ];then
      run tar xzf $ARCHIVE_DIR/${i}-$BASE_FILENAME
    fi
    run mv ${i}-${BASE_FILENAME%.tar.gz} ${REPOSITORY_NAME}-${BASE_FILENAME%.tar.gz}/$i
  fi
done

pushd ${REPOSITORY_NAME}-${BASE_FILENAME%.tar.gz}

run bash configure --prefix=/usr/local --with-milestone=fcs --with-update-version=$JAVA_UPDATE --with-build-number=$JAVA_BUILDNUM
run make all
run sudo make install

popd
popd

run sudo rm -rf $JAVA_BUILD_DIR

get-javafx.sh

#!/bin/bash

source openjdk-common.sh

JAVAFX_URL=http://hg.openjdk.java.net/openjfx/8u/rt/archive/8u${JAVA_UPDATE}-b${JAVAFX_BUILDNUM}.tar.gz
GRADLE_URL=https://downloads.gradle.org/distributions/gradle-1.8-bin.zip

mkdir -p $ARCHIVE_DIR
pushd $ARCHIVE_DIR

run curl -L -O ${JAVAFX_URL}
run curl -L -O ${GRADLE_URL}

popd

get-openjdk.sh

#!/bin/sh

source openjdk-common.sh

mkdir $ARCHIVE_DIR
pushd $ARCHIVE_DIR

curl -O ${URL} || exit 1

for i in $SUB_PROJECTS; do
  SUB_URL=$BASE_URL/$i/archive/$BASE_FILENAME
  echo "Downloading $SUB_URL"
  if [ ! -f "${i}-$BASE_FILENAME" ];then
    curl -o ${i}-$BASE_FILENAME -L "$SUB_URL" || (rm "$FILENAME"; exit 1)
  fi
done

popd

openjdk-common.sh

ARCHIVE_DIR=/build/openjdk-archives
BUILD_DIR=/build/openjdk-build

JAVA_UPDATE=71
JAVA_BUILDNUM=15
JAVAFX_BUILDNUM=${JAVA_BUILDNUM}

REPOSITORY_NAME=jdk8u
BASE_URL=http://hg.openjdk.java.net/jdk8u/${REPOSITORY_NAME}
BASE_FILENAME=jdk8u${JAVA_UPDATE}-b${JAVA_BUILDNUM}.tar.gz

URL=$BASE_URL/archive/$BASE_FILENAME
SUB_PROJECTS="corba hotspot jdk jaxws jaxp langtools nashorn"

JAVA_BUILD_DIR=$BUILD_DIR/openjdk8u${JAVA_UPDATE}

function run() {
    echo "$@"
    "$@" || exit 1
}