John Frankish wrote:
I see it in almost every package I compile, in this case I took the first one I found, NetworkManager-1.0.4, which gives:
That use of /usr/bin/file comes from NetworkManager-1.0.4/m4/libtool.m4, which is not part of Autoconf or Automake per se. I suggest reporting the bug to the Libtool project. Most likely the other projects you're compiling are also Libtool fans.