Error llvm interpreter for posix_memalign

I am running lli interpreter for polybench kernels. When I run lli, it runs correctly, but when I used a command of
$ lli --debug -force-interpreter -stats bicgN.ll

I got this error
LLVM ERROR: Tried to execute an unknown external function: posix_memalign

When the interpreter reached to this instruction
%3 = call i32 @posix_memalign(i8** %new, i64 32, i64 %2) #5

I need to solve this problem