* doc/lispref/internals.texi (Building Emacs): Document that GNU
Make 3.81 or later is now required.
Emacs, since the makefiles do all these things automatically. This
information is pertinent to Emacs developers.
- Compilation of the C source files in the @file{src} directory
+ Building Emacs requires GNU Make version 3.81 or later.
+
+ Compilation of the C source files in the @file{src} directory
produces an executable file called @file{temacs}, also called a
@dfn{bare impure Emacs}. It contains the Emacs Lisp interpreter and
I/O routines, but not the editing commands.
+++
** Building Emacs now requires C99 or later.
++++
** Building Emacs now requires GNU make, version 3.81 or later.
** New configure option --with-cairo.