#!/bin/sh##echo "Select Target compilatiion environment"echo "======================================"echo ""echo "./target target"echo "where target = mcp2515 | mmc | at9263 | standard | "echo "mcp2515 - SSV ATMEL9263 with external MCP2515"echo "mmc     - Heyfra MMC, ATMEL AT91SAM9260, 3 external SJA1000"echo "host    - local host PC, using the local kernel source tree"echo "          call make TARGET= for different supported boards" echo ""echo "the script does: ln -s Makefile-$1 Makefile"echo "before calling make, adjust cross-$1 and source it in"if [ ! -e Makefile-$1 ]then     echo ""    echo "===> target $1 not supported"    echo ""    exitfirm -rf Makefileln -s  Makefile-$1 Makefileunset KDIR# load new environment for cross compilationsource cross-$1echo "NOW:"echo "$ unset KDIR"if [ "xstandard" == "x$1" ]then    echo "unset ARCH CROSS_TOOL_PATH CROSS_COMPILE LD"else     echo "$ . cross-$1"fi