Is it, really? If the whole point of the library is dealing with binary files, how are you even going to have automated tests of the library?

The scary thing is that there is people still using autotools, or any other hyper-complicated build system in which this is easy to hide because who the hell cares about learning about Makefiles, autoconf, automake, M4 and shell scripting at once to compile a few C files. I think hiding this in any other build system would have been definitely harder. Check this mess:

  dnl Define somedir_c_make.
  [$1]_c_make=`printf '%s\n' "$[$1]_c" | sed -e "$gl_sed_escape_for_make_1" -e "$gl_sed_escape_for_make_2" | tr -d "$gl_tr_cr"`
  dnl Use the substituted somedir variable, when possible, so that the user
  dnl may adjust somedir a posteriori when there are no special characters.
  if test "$[$1]_c_make" = '\"'"${gl_final_[$1]}"'\"'; then
    [$1]_c_make='\"$([$1])\"'
  fi
  if test "x$gl_am_configmake" != "x"; then
    gl_[$1]_config='sed \"r\n\" $gl_am_configmake | eval $gl_path_map | $gl_[$1]_prefix -d 2>/dev/null'
  else
    gl_[$1]_config=''
  fi

Precisely, Gary Bernhardt has given a talk on ideology. I don’t think he’s precisely someone who thinks in absolutes. It’s just preaching that some stuff is (probably) used more than it should. I’ve seen way, way, way worse projects that over engineered things and made things slow and unmanageable, than the opposite. Of course, everyone has seen different things, and our perceptions are amplified and biased by that.