redefinition of `memcpy`

[mike239x]

Hi, I just tried to follow the build instructions; using V 0.1.21 8373264 I try to call v -lib translated p_enemy.v, get

p_enemy.v:2:12: redefinition of `memcpy`
    1| struct C.FILE{} 

    2| fn C.memcpy(voidptr, voidptr, int) 

                  ^
    3| fn C.memmove(voidptr, voidptr, int) 

    4| fn C.memset(voidptr, voidptr, int) 

I decided to comment that out, got same with next line. I commented out all the C declared functions, got

p_enemy.v:36:17: struct names must be capitalized: use `struct Ticcmd_t`
   35| 

   36| struct ticcmd_t { 

                       ^
   37| 	forwardmove byte

   38| 	sidemove byte

Any help would be appreciated.

Also, I somehow can't rebuild older version of v (or at least it still tells me the version is V 0.1.21 8373264 even if I go a commit back); so if you can point me to what version of v this works with + how to get it - that would be nice.