mv: cannot stat 'tmplibgcc1.a': No such file or directory

[SuperMatCat24]

when running ./build.sh in agbcc, it starts to build but comes up with an error:
"mv tmplibgcc1.a libgcc1.a
mv: cannot stat 'tmplibgcc1.a': No such file or directory
make: *** [Makefile:36: libgcc1.a] Error 1
make: Leaving directory '/mnt/c/Users/User/Desktop/PokeEmerald/agbcc/libgcc'"