$ cp Makefile-cmd Makefile
godmachine81s-macbook:lsbench-beta0.3.2 Lance$ make
gcc -Wall -g -lm -O2 memdir/lsmem.c -o memdir/lsmem
memdir/lsmem.c: In function ‘worker’:
memdir/lsmem.c:73: warning: implicit declaration of function ‘mempcpy’
memdir/lsmem.c:73: warning: incompatible implicit declaration of built-in function ‘mempcpy’
memdir/lsmem.c:76: warning: incompatible implicit declaration of built-in function ‘mempcpy’
Undefined symbols:
  "_mempcpy", referenced from:
      _worker in ccf8EOlq.o
      _worker in ccf8EOlq.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [lsmem] Error 1