use_distcc_ccache

#!/bin/sh
# NOTE: source this file to enable ccache & distcc feature
#
# kent@ubuntu:scripts (1) >>> ll /usr/local/bin/arm-linux-gcc
# lrwxrwxrwx 1 root root 15 2011-02-10 15:01 /usr/local/bin/arm-linux-gcc -> /usr/bin/ccache*
#
# (1) ccache tips:
#       Set CCACHE_DIR to tmpfs/ramdisk to speed up and reduce journaling filesystem i/o times
#
# (2) how to tell a directory is tmpfs by dd tool? (speed difference)
#     +----------------------------------------------------------------------------+
#     | kent@rd1-2:~ >>> dd if=/dev/zero of=/dev/shm/testfile bs=8k count=128k     |
#     | 1073741824 bytes (1.1 GB) copied, 1.34261 seconds, 800 MB/s                |
#     | kent@rd1-2:~ >>> dd if=/dev/zero of=/tmp/testfile bs=8k count=128k         |
#     | 1073741824 bytes (1.1 GB) copied, 3.07005 seconds, 350 MB/s                |
#     +----------------------------------------------------------------------------+
#

##########
# ccache # 
##########

# Refrence from "man ccache" -> "SHARING A CACHE"
export CCACHE_UMASK="002"

export PATH=/home/kent/usr/bin.ln/:$PATH
export CCACHE_DIR="/dev/shm/.ccache"

if [ -d "${CCACHE_DIR}" ]; then
    echo "+----------------------------------------------------+"
    echo "|              Current ccache statistics             |"
    echo "+----------------------------------------------------+"
    /home/kent/usr/bin/ccache -s
else
    mkdir ${CCACHE_DIR} 
    chmod 1777 ${CCACHE_DIR}

    echo "+----------------------------------------------------+"
    echo "|                Initial ccache                      |"
    echo "+----------------------------------------------------+"
    /home/kent/usr/bin/ccache --max-size=3G -s

    # Refrence from "man ccache" -> "SHARING A CACHE"
    find ${CCACHE_DIR} -type d | xargs chmod g+s
fi

##########
# distcc # 
##########

#export DISTCC_HOSTS='localhost 172.16.7.167'
#export CCACHE_PREFIX="distcc"