busybox 의 셸 스 크 립 트 를 다운로드 하고 교차 컴 파일 합 니 다.

원본 주소:http://hi.baidu.com/kkernel/item/7b9b9bd4222ec82d39f6f795
[root:/root/workpath/rootfs/busybox]#tree -L 3
.
|-- build.sh
|-- busybox-1.18.4.tar.bz2
`-- patch
    `-- busybox-1.18.4.config
 
1 directory, 3 files
[root:/root/workpath/rootfs/busybox]#cat build.sh

#!/bin/sh
 
#+--------------------------------------------------------------------------------------------
#|Description:  This shell script used to download busybox source code and cross compile it.
#|     Author:  GuoWenxue <[email protected]>
#|  ChangeLog:
#|           1, Initialize 1.0.0 on 2011.04.21
#+--------------------------------------------------------------------------------------------
 
PRJ_PATH=`pwd`
 
APP_NAME="busybox-1.18.4"
PACK_SUFIX="tar.bz2"
DL_ADDR="http://www.busybox.net/downloads/busybox-1.18.4.tar.bz2"
INST_PATH=
 
ARCH=$1
 
ARM920T_CROSS="/opt/buildroot-2011.02/arm920t/usr/bin/arm-linux-"
ARM926T_CROSS="/opt/buildroot-2011.02/arm926ejs/usr/bin/arm-linux-"
 
sup_arch=("" "s3c2410" "s3c2440" "at91sam9260")
 
function select_arch()
{
   echo "Current support ARCH: "
   i=1
   len=${#sup_arch[*]}
 
   while [ $i -lt $len ]; do
     echo "$i: ${sup_arch[$i]}"
     let i++;
   done
 
   echo "Please select: "
   index=
   read index
   ARCH=${sup_arch[$index]}
}
 
 
function decompress_packet()
(
   echo "+---------------------------------------------+"
   echo "|  Decompress $1 now"  
   echo "+---------------------------------------------+"
 
   if [ `ls $1 | grep "tar.bz2"` ] ; then
       set -x
       tar -xjf $1
       set +x
   fi
 
   if [ `ls $1 | grep "tar.gz"` ] ; then
       set -x
       tar -xzf $1
       set +x
   fi
)
 
if [ -z $ARCH ] ; then
  select_arch
fi
 
if [ $ARCH = "s3c2440" -o $ARCH = "s3c2410" ] ; then 
    CROSS="$ARM920T_CROSS"
elif [ $ARCH = "at91sam9260" ] ; then
    CROSS="$ARM926T_CROSS"
else
    echo "+------------------------------------------------------------------+"
    echo "|  ERROR: Unsupport platform to cross compile "  
    echo "+------------------------------------------------------------------+"
    exit -1;
fi
 
 
# Download source code packet
if [ ! -s $APP_NAME.$PACK_SUFIX ] ; then
   echo "+------------------------------------------------------------------+"
   echo "|  Download $APP_NAME.$PACK_SUFIX  now "  
   echo "+------------------------------------------------------------------+"
 
   wget $DL_ADDR
fi
 
# Decompress source code packet
if [ ! -d $APP_NAME ] ; then
    decompress_packet $APP_NAME.tar.*
fi
 
#Copy the configure file
if [ ! -s .config ]; then
    cp patch/$APP_NAME.config $APP_NAME/.config
fi
 
if [ ! -s $APP_NAME/.config ]; then
   echo "+------------------------------------------------------------------+"
   echo "| ERROR: Miss default configure file"  
   echo "+------------------------------------------------------------------+"
   exit -2
fi
 
if [ -z $INST_PATH ] ; then
   INST_PATH=$PRJ_PATH/../$ARCH/mnt
fi
 
cd $APP_NAME
 
 
   #Modify the cross config in the configure file
   line=`sed -n '/CONFIG_CROSS_COMPILER_PREFIX/=' .config`
   sed -i -e ${line}s"|.*|CONFIG_CROSS_COMPILER_PREFIX=\"$CROSS\"|" .config
 
   #Modify the install path in the configure file
   line=`sed -n '/CONFIG_PREFIX=/=' .config`
   sed -i -e ${line}s"|.*|CONFIG_PREFIX=\"$INST_PATH\"|" .config
 
   echo "+------------------------------------------------------------------+"
   echo "|         Cross compile $APP_NAME  now "  
   echo "|  ARCH: \"$ARCH\""
   echo "| CROSS: \"$CROSS\""
   echo "+------------------------------------------------------------------+"
   set -x
   make clean
   make
   set +x
 
   #Check Root filesystem mount or not
   mountpoint $INST_PATH
   if [ 0 != $? ] ; then 
      echo "+------------------------------------------------------------------+"
      echo "| WARNING: Root Filesystem $INST_PATH not mounted, don't install."  
      echo "+------------------------------------------------------------------+"
      exit
   fi
 
   #install busybox
   sudo rm -rf $INST_PATH/bin/*
   sudo rm -rf $INST_PATH/sbin/*
   make install 
cd