update setup_env shell script, fix set -e bug

guowenxue

2019-08-24 f8f05031c8278c8ad6dd18714c2a82d930dbfcbd

 3rdparty/ethtool/build.sh

@@ -11,9 +11,7 @@

LYFTP_SRC=ftp://master.iot-yun.club/src/

if [ -z $CROSSTOOL ] ; then
   CROSSTOOL=/opt/crosstool/cortex-a7/bin/arm-linux-gnueabi-
fi
CROSSTOOL=/opt/buildroot/cortex-a5/bin/arm-linux-

function msg_banner()
{
@@ -62,6 +60,7 @@
    PACK_SUFIX=tar.gz

    if [ -f ${PREFIX_PATH}/ethtool ] ; then
        msg_banner "$SRC_NAME already compile and installed"
        return 0;
    fi