-* ld complains because `alloca' is not defined on your system.
-
-Alloca is a library function in 4.2bsd, which is used very heavily by
-GNU Emacs. Use of malloc instead is very difficult, as you would have
-to arrange for the storage to be freed, and do so even in the case of
-a longjmp happening inside a subroutine. Many subroutines in Emacs
-can do longjmp.
-
-If your system does not support alloca, try defining the symbol
-C_ALLOCA in the m-...h file for that machine. This will enable the use
-in Emacs of a portable simulation for alloca. But you will find that
-Emacs's performance and memory use improve if you write a true
-alloca in assembler language.
-
-alloca (N) should return the address of an N-byte block of memory
-added dynamically to the current stack frame.
-