0、preface/foreword

BES采用命令行模式进行编译，使用的是开源编译工具链（arm平台），编译管理工具为make。 

1、命令解释

举例：

 make T=best1306_ibrt_anc     V=0   -j

T：表示目标（决定编译项目）

V=0：表示不打开编译详细消息信息（影响编译log）

-j（job）：表示多任务编译（影响编译速度），一般一个处理器可以有1到2个任务， -j4, -j8

Note: -j表示不限制最大任务数量，但是最大也不会超过处理器个数的两倍(core_number * 2)。

1.1 V=1 & -j

 make T=best1306_ibrt_anc     V=1   -j

1.2 V=0 & -j

 1.3 V=2 & -j 

1.4 V=0

 2、Others

2.1 查看系统处理器核数

andy@FWCNNB068:/mnt/d/work/source_code/P27WLCV2-Update-github/P27WLCV2-BES2600IUC-update$ cat /proc/stat
cpu  1658948 0 1611451 74687924 0 211703 0 0 0 0
cpu0 213159 0 454514 4204723 0 183553 0 0 0 0
cpu1 157512 0 135853 4579031 0 15771 0 0 0 0
cpu2 305034 0 224745 4342618 0 3085 0 0 0 0
cpu3 167698 0 121453 4583245 0 1429 0 0 0 0
cpu4 168121 0 138431 4565843 0 1495 0 0 0 0
cpu5 94665 0 64775 4712956 0 493 0 0 0 0
cpu6 82828 0 62776 4726792 0 878 0 0 0 0
cpu7 120295 0 57976 4694125 0 559 0 0 0 0
cpu8 54953 0 51412 4766031 0 848 0 0 0 0
cpu9 20959 0 25835 4825600 0 142 0 0 0 0
cpu10 89284 0 97443 4685668 0 1432 0 0 0 0
cpu11 19693 0 26059 4826642 0 114 0 0 0 0
cpu12 46909 0 40770 4784715 0 562 0 0 0 0
cpu13 30209 0 45415 4796770 0 400 0 0 0 0
cpu14 42620 0 25304 4804470 0 271 0 0 0 0
cpu15 45009 0 38690 4788695 0 671 0 0 0 0
intr 894498 377553 332 0 0 0 0 0 0 0 287178 0 0 1078 0 8572 189 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 494453
btime 1679894893
processes 4366
procs_running 1
procs_blocked 0
softirq 531871 0 166655 5588 285920 8660 0 272 0 791 63985
andy@FWCNNB068:/mnt/d/work/source_code/P27WLCV2-Update-github/P27WLCV2-BES2600IUC-update$ cat /proc/stat | grep "cpu[0-9]" -c
16