[LEDE-DEV] Predict sysupgrade file name

[Yury Shvedov]

Hi all,

I have a task to universal automatically predict sysupgrade (or factory) 
file name on the board, with already installed openwrt. The filename 
format is clear inside buildroot, but I can't find the way to learn 
CONFIG_TARGET_BOARD and CONFIG_TARGET_SUBTARGET variables values inside 
running system. I can pass them to my package, but it will not rebuilt 
when CONFIG_TARGET_SUBTARGET changed and will left invalid. I can clean 
it manually every time, but this way is unacceptable. Is there any 
common way to get that values or *sysupgrade.* filename from running 
system or make package rebuild each time?

-- 
Yury Shvedov,
WiMark Systems