Freebsd8.1:make:don't know how to make

 配置make.conf文件

FETCH_CMD=axel
FETCH_BEFORE_ARGS= -n 10 -a
FETCH_AFTER_ARGS=
DISABLE_SIZE=yes
MASTER_SITE_OVERRIDE?= \
http://downloads.mysql.com/archives/mysql-5.5/${DIST_SUBDIR}/ \
ftp://ftp.freeBSDchina.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/ \
ftp://ftp.cn.freebsd.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/ \
ftp://ftp.freebsdchina.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/ \
ftp://ftp1.tw.freebsd.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/ \
http://mirrors.163.com/FreeBSD/distfiles/${DIST_SUBDIR}/
MASTER_SITE_OVERRIDE?=${MASTER_SITE_BACKUP}

这里特别要注意就是\后面不能含有空格。