#!/bin/sh

HOME_DIR=/home/xxx

CROSSTOOL_INSTALL_DIR=${HOME_DIR}/crosstool_install

# 必须要设置，可以根据FUNCNAME查到函数调用栈

# Inherit the fault handler in subshells and functionsset -E#设置捕捉信号,ERR 当一条命令返回非零状态时(代表命令执行不成功) trap die ERR

#trap 'echo "fun: ${FUNCNAME[0]} " ' DEBUG

#trap 'echo "LINENO: ${LINENO} " ' DEBUGdie(){  local ret=$? local depth #echo " Error: [FILE: $0 LINE: $1] exited with status $ret " #打印调用函数栈 #echo " backtrace: ${FUNCNAME[@]} " for((depth=1; ${BASH_LINENO[$((${depth}-1))]}>0; depth++));  do        #file="${BASH_SOURCE[${depth}]#./}"  file="${BASH_SOURCE[${depth}]}"        func="${FUNCNAME[${depth}]}"        line="${BASH_LINENO[${depth}-1]:-?}"        echo "Backtrace: ${file}[${func}() <${line}>]"    done #死循环等待ctrl + c while true do  sleep 1 done}

CREATE_MAKE_DIR()

{  #echo "test fun: ${FUNCNAME[@]} "    if [[ -d ${CROSSTOOL_INSTALL_DIR} ]]  then echo -e "${CROSSTOOL_INSTALL_DIR} is exit,no create" return 0 fi #出错位置 return 1;}

#创建编译目录

CREATE_MAKE_DIR

验证打印：

打印错误位置