salami /tmp/grandstream_suck
% ls
Makefile.ZIP  sox.zip
 salami /tmp/grandstream_suck
% for i in *; do unzip $i; done
Archive:  Makefile.ZIP
  inflating: Makefile                
Archive:  sox.zip
  inflating: sox.c                   
  inflating: ring.c                  
  inflating: handlers.c              
  inflating: st_i.h                  
 salami /tmp/grandstream_suck
% make
make: *** No rule to make target `Makefile.in', needed by `Makefile'.  Stop.