ERROR: redefinition of 'argz_next'

Hello Guys,
at Many times, im using openWRT 14.04 version for spesific target arch.
But now i wanna use new openWRT version and at first i planning for x86_64 arch,
again i follow wiki page, i fetched new openWRT version from git source and installed and updated feeds, then select arch x86 and run make,
I take an error: redefinition of 'argz_next'
I changed gcc version 5.2 , 7.x and finally 8.x but there no reason ?

What can i do now ?
Many Thanks,
My Best Regards.