Don't define HAVE_ALLOCA, C_ALLOCA and STACK_DIRECTION, now set by autoconf.

71 files changed, 71 insertions, 749 deletions

diff --git a/src/m/7300.h b/src/m/7300.h
index b090d8dd3ee..8f4f70efe69 100644
--- a/src/m/7300.h
+++ b/src/m/7300.h
@@ -1,5 +1,5 @@
 /* machine description file for AT&T UNIX PC model 7300
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
    Modified for this machine by mtxinu!rtech!gonzo!daveb
 
 This file is part of GNU Emacs.
@@ -66,15 +66,9 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0) */
 
-#ifdef __GNUC__
-
-#define HAVE_ALLOCA
-
-#else
+#ifndef __GNUC__
 
 #define SWITCH_ENUM_BUG
-#define C_ALLOCA
-#define STACK_DIRECTION -1
 
 #endif
 
diff --git a/src/m/acorn.h b/src/m/acorn.h
index ad7cfeb4ba2..38b148b3d2e 100644
--- a/src/m/acorn.h
+++ b/src/m/acorn.h
@@ -1,5 +1,5 @@
 /* Machine description file for Acorn RISCiX machines.
-   Copyright (C) 1994 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -119,26 +119,12 @@ Boston, MA 02111-1307, USA.  */
 
 #define ADJUST_EXEC_HEADER {hdr.a_magic &= ~MF_SQUEEZED;}
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
 #ifdef __GNUC__
 
-/* Use builtin alloca. Also be sure that no other ones are tried out. */
-#define alloca __builtin_alloca
-#define HAVE_ALLOCA
-
 /* Keep gcc/RISCiX happy - it uses __gccmain where other versions of
    gcc use __main, because of a library routine name clash. */
 #define __main __gccmain
 
-#else
-#define C_ALLOCA
-#undef HAVE_ALLOCA
 #endif  /* __GNUC__ */
 
 /* Define NO_REMAP if memory segmentation makes it not work well
@@ -184,9 +170,6 @@ extern int _edata;
 /* Use <dirent.h>. */
 #define SYSV_SYSTEM_DIR
 
-/* For the portable alloca */
-#define STACK_DIRECTION -1
-
 #ifdef NO_REMAP
 /* CRT0_O is defined in s/riscix1-1.h or s/riscix1-2.h, as appropriate. */
 #define START_FILES pre-crt0.o CRT0_O
diff --git a/src/m/alliant-2800.h b/src/m/alliant-2800.h
index 5cf7e393433..243b786e714 100644
--- a/src/m/alliant-2800.h
+++ b/src/m/alliant-2800.h
@@ -1,5 +1,5 @@
 /* alliant-2800.h - Alliant FX/2800 machine running Concentrix 2800.
-   Copyright (C) 1990 Free Software Foundation, Inc.
+   Copyright (C) 1990, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -95,16 +95,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#undef C_ALLOCA
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/alliant.h b/src/m/alliant.h
index bf8909fb3ef..86f104ceedd 100644
--- a/src/m/alliant.h
+++ b/src/m/alliant.h
@@ -1,5 +1,5 @@
 /* alliant.h  Alliant machine running system version 2 or 3.
-   Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1987, 2002 Free Software Foundation, Inc.
    Note that for version 1 of the Alliant system
    you should use alliant1.h instead of this file.
    Use alliant4.h for version 4.
@@ -83,21 +83,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#undef C_ALLOCA
-#define HAVE_ALLOCA
-
-#ifdef ALLIANT_1
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-#endif /* ALLIANT_1 */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/alpha.h b/src/m/alpha.h
index 82e6332132a..e224bac75ad 100644
--- a/src/m/alpha.h
+++ b/src/m/alpha.h
@@ -1,5 +1,5 @@
 /* machine description file For the alpha chip.
-   Copyright (C) 1994, 1997, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1994, 1997, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -80,15 +80,6 @@ NOTE-END
 
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
-
 /* GNU malloc and the relocating allocator do not work together
    with X.   [Who wrote that?]  */
 
diff --git a/src/m/altos.h b/src/m/altos.h
index 264d65745d1..a20f89ac903 100644
--- a/src/m/altos.h
+++ b/src/m/altos.h
@@ -1,5 +1,5 @@
 /* altos machine description file       Altos 3068 Unix System V Release 2
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -36,18 +36,9 @@ Boston, MA 02111-1307, USA.  */
 
 #define LIB_STANDARD -lc
 
-#ifdef __GNUC__
-#define alloca __builtin_alloca
-#define HAVE_ALLOCA
-#else
-#define C_ALLOCA                /* we have -lPW and alloca but it's broken!
-                                   <vsedev!ron> */
-#endif
-
 #define SWITCH_ENUM_BUG
 
 #define NO_REMAP
-#define STACK_DIRECTION -1
 
 #undef TERMINFO
 
diff --git a/src/m/amdahl.h b/src/m/amdahl.h
index 9b4bb7481a9..b0a35395d9e 100644
--- a/src/m/amdahl.h
+++ b/src/m/amdahl.h
@@ -1,5 +1,5 @@
 /* amdahl machine description file 
-   Copyright (C) 1987, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -90,16 +90,6 @@ compiler is so brain damaged that it is not even worth trying to use it.
 
 /* #define VIRT_ADDR_VARIES*/
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/*#define HAVE_ALLOCA */
-
 #ifdef HAVE_ALLOCA
 #define LIB_STANDARD -lPW -lc
 #endif
@@ -146,8 +136,5 @@ extern int sign_extend_temp;
 #define SEGSIZ 0x10000          /* Should this not be defined elsewhere ? */
 #define SEGMENT_MASK (SEGSIZ - 1)
 
-/* Tell alloca.c which direction stack grows.  */
-#define STACK_DIRECTION -1
-
 /* Compensate for error in signal.h.  */
 #define NSIG_MINIMUM 20
diff --git a/src/m/apollo.h b/src/m/apollo.h
index f8424be88b0..2808e580368 100644
--- a/src/m/apollo.h
+++ b/src/m/apollo.h
@@ -1,5 +1,5 @@
 /* machine description file for Apollo machine.
-   Copyright (C) 1985, 1986, 1994, Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1994, 2002, Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -52,10 +52,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define HAVE_ALLOCA because we use the system's version of alloca.  */
-
-#define HAVE_ALLOCA
-
 /* Prevent -lg from being used for debugging.  Not needed.  */
 
 #define LIBS_DEBUG
diff --git a/src/m/arm.h b/src/m/arm.h
index 3711bdd740c..ad22303eeec 100644
--- a/src/m/arm.h
+++ b/src/m/arm.h
@@ -1,5 +1,5 @@
 /* Machine description file for ARM-based non-RISCiX machines.
-   Copyright (C) 1994 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -51,13 +51,7 @@ Boston, MA 02111-1307, USA.  */
 
 /* Use builtin alloca. Also be sure that no other ones are tried out. */
 #define alloca __builtin_alloca
-#define HAVE_ALLOCA
 
-#else
-#define C_ALLOCA
-#undef HAVE_ALLOCA
 #endif  /* __GNUC__ */
 
 #define NO_REMAP
-
-#define STACK_DIRECTION -1
diff --git a/src/m/att3b.h b/src/m/att3b.h
index 394f3db959f..4d9aab7e6bb 100644
--- a/src/m/att3b.h
+++ b/src/m/att3b.h
@@ -1,5 +1,5 @@
 /* Machine-dependent configuration for GNU Emacs for AT&T 3b machines.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
    Modified by David Robinson (daver@csvax.caltech.edu) 6/6/86
 
@@ -78,17 +78,9 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
 /* SysV has alloca in the PW library */
 
 #define LIB_STANDARD -lPW -lc
-#define HAVE_ALLOCA
 
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
@@ -136,10 +128,6 @@ extern int sign_extend_temp;
 
 #define TEXT_START 0
 
-
-/* For alloca.c (not actually used, since HAVE_ALLOCA) */
-#define STACK_DIRECTION 1
-
 /* (short) negative-int doesn't sign-extend correctly */
 #define SHORT_CAST_BUG
 
diff --git a/src/m/aviion.h b/src/m/aviion.h
index 62802d7a615..c86eb85d02c 100644
--- a/src/m/aviion.h
+++ b/src/m/aviion.h
@@ -1,5 +1,5 @@
 /* machine description file for Data General AViiON.
-   Copyright (C) 1985, 1986, 1991 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1991, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -86,15 +86,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
 #define alloca(x) __builtin_alloca(x)
 
 /* Define NO_REMAP if memory segmentation makes it not work well
diff --git a/src/m/celerity.h b/src/m/celerity.h
index 6e378e84fcc..3ec5e99c1ec 100644
--- a/src/m/celerity.h
+++ b/src/m/celerity.h
@@ -1,5 +1,5 @@
 /* machine description file for Celerity.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -52,9 +52,5 @@ Boston, MA 02111-1307, USA.  */
 
 #define LD_SWITCH_MACHINE -k100000
 
-/* alloca is provided by the system.  */
-
-#define HAVE_ALLOCA
-
 /* (short) negative-int doesn't sign-extend correctly */
 #define SHORT_CAST_BUG
diff --git a/src/m/clipper.h b/src/m/clipper.h
index 7dc5e84b07d..8391d7237ef 100644
--- a/src/m/clipper.h
+++ b/src/m/clipper.h
@@ -1,5 +1,5 @@
 /* machine description file for clipper
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -80,15 +80,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/cnvrgnt.h b/src/m/cnvrgnt.h
index 855055ce33c..5f76da4bb22 100644
--- a/src/m/cnvrgnt.h
+++ b/src/m/cnvrgnt.h
@@ -1,5 +1,5 @@
 /* machine description file for convergent S series.
-   Copyright (C) 1989 Free Software Foundation, Inc.
+   Copyright (C) 1989, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -76,16 +76,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -97,10 +87,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define SWITCH_ENUM_BUG
 
-/* grows towards lower addresses.  */
-
-#define STACK_DIRECTION -1
-
 /* some errno.h's don't actually allocate the variable itself.
    Cause crt0.c to define errno.  */
 
diff --git a/src/m/convex.h b/src/m/convex.h
index a0fbd6223df..44a86bf5d84 100644
--- a/src/m/convex.h
+++ b/src/m/convex.h
@@ -1,5 +1,5 @@
 /* machine description file for Convex (all models).
-   Copyright (C) 1987, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -85,16 +85,6 @@ Boston, MA 02111-1307, USA.  */
 
 /*#define VIRT_ADDR_VARIES*/
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Must use the system's termcap.  It does special things.  */
   
 #define LIBS_TERMCAP -ltermcap
diff --git a/src/m/cydra5.h b/src/m/cydra5.h
index 5c8fe36388f..344e6139301 100644
--- a/src/m/cydra5.h
+++ b/src/m/cydra5.h
@@ -1,5 +1,5 @@
 /* machine description file for Cydrome's CYDRA 5 mini super computer
-   Copyright (C) 1988, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -79,16 +79,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-
 /* The data segment in this machine always starts at address 0x10000000.
    An address of data cannot be stored correctly in a Lisp object;
    we always lose the high bits.  We must tell XPNTR to add them back.  */
@@ -105,9 +95,6 @@ Boston, MA 02111-1307, USA.  */
 #define BROKEN_FIONREAD /* We son't even have it */
 #define LIBS_MACHINE    -lsocket -lnsl
 
-/* Stack grows downward in memory.  */
-#define STACK_DIRECTION -1
-
 /* The data section in a coff file must be aligned in the file.  */
 #define DATA_SECTION_ALIGNMENT  0xFFF
 
diff --git a/src/m/delta.h b/src/m/delta.h
index 8e8498bafd0..a879580d02a 100644
--- a/src/m/delta.h
+++ b/src/m/delta.h
@@ -1,7 +1,7 @@
 /* Machine description file for the Motorola Delta.
    Tested on mvme147 board using R3V7 without X.  Tested with gcc.
    Tested on mvme167 board using R3V7 without X.  Tested with cc, gnucc, gcc.
-   Copyright (C) 1986, 1993, 1994, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1993, 1994, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -84,16 +84,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-/* #define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -163,7 +153,6 @@ Boston, MA 02111-1307, USA.  */
 #ifdef __GNUC__
  /* Use builtin alloca. Also be sure that no other ones are tried out. */
 # define alloca __builtin_alloca
-# define HAVE_ALLOCA
  /* Union lisp objects do not yet work as of 19.15. */
 /* # undef NO_UNION_TYPE */
 
diff --git a/src/m/delta88k.h b/src/m/delta88k.h
index 10bb6c911a5..08eb98e1eaa 100644
--- a/src/m/delta88k.h
+++ b/src/m/delta88k.h
@@ -1,5 +1,5 @@
 /* Machine description file for Motorola System V/88 machines
-   Copyright (C) 1985 Free Software Foundation, Inc.
+   Copyright (C) 1985, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -93,25 +93,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define NO_REMAP
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* BEM:  Distributed asm alloca doesn't work.  Don't know about libPW.a.
-   C ALLOCA is safe and fast enough for now. */
-
-#ifdef __GNUC__
-#define HAVE_ALLOCA   /* ... and be sure that no other ones are tried out. */
-#undef C_ALLOCA
-#else /* not __GNUC__ */
-#undef HAVE_ALLOCA
-#define C_ALLOCA      /* Use the alloca() supplied in alloca.c. */
-#define STACK_DIRECTION -1  /* The stack grows towards lower addresses. */
-#endif /* __GNUC__ */
-
 /* Motorola SysV has PTYs.  Not all usg3-5 systems do, so this is defined
    here. */
 
diff --git a/src/m/dpx2.h b/src/m/dpx2.h
index cb88daf7439..eee18512e6d 100644
--- a/src/m/dpx2.h
+++ b/src/m/dpx2.h
@@ -1,5 +1,5 @@
 /* machine description for Bull DPX/2 range 
-   Copyright (C) 1985, 1986, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -90,16 +90,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES /**/
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/* #define HAVE_ALLOCA /**/
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -190,12 +180,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define TEXT_START 0
 
-/* 
- * Define the direction of stack growth. 
- */
-
-#define STACK_DIRECTION -1
-
 /* we have termios */
 #undef HAVE_TERMIO
 #define HAVE_TERMIOS
diff --git a/src/m/elxsi.h b/src/m/elxsi.h
index dc27d25bad7..b3003000dc5 100644
--- a/src/m/elxsi.h
+++ b/src/m/elxsi.h
@@ -1,5 +1,5 @@
 /* machine description file for Elxsi machine (running enix).
-   Copyright (C) 1986, 1992 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1992, 2002 Free Software Foundation, Inc.
    Adapted by John Salmon
 
 This file is part of GNU Emacs.
@@ -96,16 +96,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/*#define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/gec63.h b/src/m/gec63.h
index c0ca4280911..0a5877bb09e 100644
--- a/src/m/gec63.h
+++ b/src/m/gec63.h
@@ -1,5 +1,5 @@
 /* machine description file for gec63
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -38,7 +38,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* GEC63 has alloca in the PW/ux63 library.  */
 #define LIB_STANDARD -lPW -lc
-#define HAVE_ALLOCA
 
 /* Do not define LOAD_AVE_TYPE or LOAD_AVE_CVT
    since there is no /dev/kmem */
diff --git a/src/m/gould.h b/src/m/gould.h
index e208b9ea996..c2e469db38e 100644
--- a/src/m/gould.h
+++ b/src/m/gould.h
@@ -5,7 +5,7 @@
 * RELEASE2_1 in config.h. This may also be necessary with un-updated
 * official releases of 2.1
 
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -110,16 +110,6 @@ NOTE-END */
 
 #define VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-#define STACK_DIRECTION -1  /* grows towards lower addresses on Gould UTX/32 */
-
 /* No need to extend the user stack. */
 
 /* If this is a 2.1 system, COFF will be predefined by cpp. If it's */
diff --git a/src/m/hp800.h b/src/m/hp800.h
index 26ce5479617..d20abeb24ee 100644
--- a/src/m/hp800.h
+++ b/src/m/hp800.h
@@ -1,5 +1,5 @@
 /* machine description file for hp9000 series 800 machines.
-   Copyright (C) 1987 Free Software Foundation, Inc.
+   Copyright (C) 1987, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -102,8 +102,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef CANNOT_DUMP
 
-#define STACK_DIRECTION 1 
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -117,8 +115,6 @@ Boston, MA 02111-1307, USA.  */
 
 #ifdef GNU_LINUX
 
-#define HAVE_ALLOCA
-
 /* Data type of load average, as read out of kmem.  */
 
 #define LOAD_AVE_TYPE long
@@ -141,16 +137,6 @@ Boston, MA 02111-1307, USA.  */
    numerically.  */
 
 #define VIRT_ADDR_VARIES
-
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/* #define HAVE_ALLOCA */
 
 /* the data segment on this machine always starts at address 0x40000000. */
 
diff --git a/src/m/hp9000s300.h b/src/m/hp9000s300.h
index e4db86a959a..725aa0d9eec 100644
--- a/src/m/hp9000s300.h
+++ b/src/m/hp9000s300.h
@@ -1,5 +1,5 @@
 /* machine description file for hp9000 series 200 or 300 on either HPUX or BSD.
-   Copyright (C) 1985 Free Software Foundation, Inc.
+   Copyright (C) 1985, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -120,8 +120,6 @@ NOTE-END */
 
 #define CRT0_DUMMIES            bogus_a6,
 
-#define HAVE_ALLOCA
-
 #ifndef __GNUC__
 #define LIBS_DEBUG              /* don't have -lg that works */
 #define C_DEBUG_SWITCH          /* don't support -g */
@@ -150,10 +148,6 @@ NOTE-END */
 
 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
 
-#ifdef __GNUC__
-#define HAVE_ALLOCA
-#endif
-
 /* This library is needed with -g, on the 200/300 only.  */
 
 #if !defined(__GNUC__) || defined(__HPUX_ASM__)
diff --git a/src/m/i860.h b/src/m/i860.h
index f1ce0c04fb1..b65b6fdd27d 100644
--- a/src/m/i860.h
+++ b/src/m/i860.h
@@ -1,5 +1,5 @@
 /* machine description file for i860.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,16 +81,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/* #define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/ia64.h b/src/m/ia64.h
index f77d0a89aea..dff99e73496 100644
--- a/src/m/ia64.h
+++ b/src/m/ia64.h
@@ -1,5 +1,5 @@
 /* machine description file for the IA-64 architecture.
-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
      Contributed by David Mosberger <davidm@hpl.hp.com>
 
 This file is part of GNU Emacs.
@@ -87,15 +87,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
-
 /* Define the following if GNU malloc and the relocating allocator do
    not work together with X.  */
 
diff --git a/src/m/ibmps2-aix.h b/src/m/ibmps2-aix.h
index b6b61715e01..36dc0e7cbdc 100644
--- a/src/m/ibmps2-aix.h
+++ b/src/m/ibmps2-aix.h
@@ -1,5 +1,5 @@
 /* machine description file for ibm ps/2 aix386.
-   Copyright (C) 1989 Free Software Foundation, Inc.
+   Copyright (C) 1989, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -187,15 +187,7 @@ so disable it for them.  */
 
 /* Here override various assumptions in ymakefile */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
 #ifdef __GNUC__
-#define HAVE_ALLOCA
 #define alloca(n) __builtin_alloca(n)
 #if __GNUC__ < 2
 #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lbsd -lrts -lc 
@@ -204,8 +196,6 @@ so disable it for them.  */
 /* tranle says that -fstrength-reduce does not help.  */
 #define C_DEBUG_SWITCH
 #else
-#define C_ALLOCA
-#define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
 #define LIBS_MACHINE -lbsd -lrts
 #endif
 
diff --git a/src/m/ibmrs6000.h b/src/m/ibmrs6000.h
index 8500ee9a7a2..51f809c45ff 100644
--- a/src/m/ibmrs6000.h
+++ b/src/m/ibmrs6000.h
@@ -1,5 +1,5 @@
 /* R2 AIX machine/system dependent defines
-   Copyright (C) 1988 Free Software Foundation, Inc.
+   Copyright (C) 1988, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -101,19 +101,6 @@ Boston, MA 02111-1307, USA.  */
 #undef ADDR_CORRECT
 #define ADDR_CORRECT(x) ((int)(x))
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* Note: aix3-2.h defines HAVE_ALLOCA; aix3-1.h doesn't.  */
-#ifndef HAVE_ALLOCA
-#define C_ALLOCA
-#define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
-#endif
-
 /* Specify the font for X to use.
    This used to be Rom14.500; that's nice on the X server shipped with
    the RS/6000, but it's not available on other servers.  */
diff --git a/src/m/ibmrt-aix.h b/src/m/ibmrt-aix.h
index 5ff553636b9..0ae8941007f 100644
--- a/src/m/ibmrt-aix.h
+++ b/src/m/ibmrt-aix.h
@@ -1,5 +1,5 @@
 /* RTPC AIX machine/system dependent defines
-   Copyright (C) 1988, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -86,16 +86,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-#define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
-
 /* AIX has PTYs, so define here, along with macros needed to make them work. */
 
 #define HAVE_PTYS
diff --git a/src/m/ibmrt.h b/src/m/ibmrt.h
index e9404d125c1..e6dfa17117d 100644
--- a/src/m/ibmrt.h
+++ b/src/m/ibmrt.h
@@ -1,5 +1,5 @@
 /* RTPC machine dependent defines 
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -79,15 +79,6 @@ Boston, MA 02111-1307, USA.  */
    numerically.  */
 
 #undef VIRT_ADDR_VARIES
-
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
 
 /* The data segment in this machine starts at a fixed address.
    An address of data cannot be stored correctly in a Lisp object;
diff --git a/src/m/ibms390.h b/src/m/ibms390.h
index ce4e6bcef74..019db37bd80 100644
--- a/src/m/ibms390.h
+++ b/src/m/ibms390.h
@@ -1,5 +1,5 @@
 /* machine description file template.
-   Copyright (C) 1985, 1986, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2001, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,16 +81,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/intel386.h b/src/m/intel386.h
index 6ac58b824df..26be9d6fd97 100644
--- a/src/m/intel386.h
+++ b/src/m/intel386.h
@@ -1,5 +1,5 @@
 /* Machine description file for intel 386.
-   Copyright (C) 1987 Free Software Foundation, Inc.
+   Copyright (C) 1987, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -166,8 +166,6 @@ NOTE-END */
 
 #define NO_REMAP
 
-#define STACK_DIRECTION -1
-
 /* Since cannot purify, use standard Xenix 386 startup code. */
 
 #define START_FILES     /lib/386/Sseg.o pre-crt0.o /lib/386/Scrt0.o
@@ -192,25 +190,14 @@ NOTE-END */
 #endif /* not USG5_4 */
 #endif /* LIB_STANDARD */
 
-/* Paul Abrahams <abrahams@acm.org> says that
-   Unixware does not have alloca when using cc.  */
-#if ! (defined (USG5_4) && ! defined (SOLARIS2) && ! defined (__GNUC__))
-#define HAVE_ALLOCA
-#endif
-
 #define NO_REMAP 
 #define TEXT_START 0
 #endif /* USG */
 #endif /* not XENIX */
 
-#ifdef BSD_SYSTEM
-#define HAVE_ALLOCA
-#endif /* BSD_SYSTEM */
-
 /* If compiling with GCC, let GCC implement alloca.  */
 #if defined(__GNUC__) && !defined(alloca)
 #define alloca(n) __builtin_alloca(n)
-#define HAVE_ALLOCA
 #endif
 
 #ifdef USG5_4
@@ -225,7 +212,6 @@ NOTE-END */
 #define VIRT_ADDR_VARIES
 #define DATA_END        get_data_end ()
 #define DATA_START      get_data_start ()
-#define HAVE_ALLOCA
 #define NO_ARG_ARRAY
 #endif
 
diff --git a/src/m/iris4d.h b/src/m/iris4d.h
index bfbe6a2f131..457f3594636 100644
--- a/src/m/iris4d.h
+++ b/src/m/iris4d.h
@@ -1,5 +1,5 @@
 /* machine description file for Iris-4D machines.  Use with s/irix*.h.
-   Copyright (C) 1987 Free Software Foundation, Inc.
+   Copyright (C) 1987, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -91,16 +91,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */  /* Sjoerd.Mullender@cwi.nl says no need.  */
-/* #define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -168,11 +158,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef FIRST_PTY_LETTER
 #define FIRST_PTY_LETTER 'q'
-
-/* Define STACK_DIRECTION for alloca.c */
-
-#undef STACK_DIRECTION
-#define STACK_DIRECTION -1
 
 #ifndef _LP64
 /* The standard definitions of these macros would work ok,
diff --git a/src/m/irist.h b/src/m/irist.h
index 9de72155458..78111b6a3e1 100644
--- a/src/m/irist.h
+++ b/src/m/irist.h
@@ -1,6 +1,6 @@
 /* machine description file for Silicon Graphics Iris 2500 Turbos;
    also possibly for non-turbo Irises with system release 2.5.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -49,7 +49,7 @@ NOTE-END */
       /* Eric - May 4, 1987 */
       report_file_error ("Worked just find\n", Qnil);
 
-  Without any sort of debugger that works on emacs (I know... but I don't have
+  Without any sort of debugger that works on emacs (I know... but I dont have
   *time* right now to start with gdb), it was quite time consuming to track
   it down to this.
 
@@ -118,16 +118,6 @@ NOTE-END */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/isi-ov.h b/src/m/isi-ov.h
index beb3fdd122a..768b40051f6 100644
--- a/src/m/isi-ov.h
+++ b/src/m/isi-ov.h
@@ -1,5 +1,5 @@
 /* machine description file for ISI 68000's
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -83,7 +83,6 @@ NOTE-END */
 /* A few changes for the newer systems.  */
 
 #ifdef BSD4_3
-#define HAVE_ALLOCA
 /* The following line affects crt0.c.  */
 #undef m68k
 
diff --git a/src/m/m68k.h b/src/m/m68k.h
index d2a1ebff743..54d783eba51 100644
--- a/src/m/m68k.h
+++ b/src/m/m68k.h
@@ -1,5 +1,5 @@
 /* Machine description file for generic Motorola 68k.
-   Copyright (C) 1985, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1995, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -85,5 +85,4 @@ Boston, MA 02111-1307, USA.  */
 /* If compiling with GCC, let GCC implement alloca.  */
 #if defined(__GNUC__) && !defined(alloca)
 #define alloca(n) __builtin_alloca(n)
-#define HAVE_ALLOCA
 #endif
diff --git a/src/m/macppc.h b/src/m/macppc.h
index 860371d34e6..6f8f841a46c 100644
--- a/src/m/macppc.h
+++ b/src/m/macppc.h
@@ -1,5 +1,5 @@
 /* machine description file For the powerpc Macintosh.
-   Copyright (C) 1994, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2001, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -51,15 +51,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
-
 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
  * do not support asynchronous I/O (using SIGIO) on sockets,
  * even though it works fine on tty's.  If you have one of
diff --git a/src/m/masscomp.h b/src/m/masscomp.h
index 5f9aa6ae50b..540fa3e0a8e 100644
--- a/src/m/masscomp.h
+++ b/src/m/masscomp.h
@@ -1,5 +1,5 @@
 /* machine description file for Masscomp 5000 series running RTU, ucb universe.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,25 +81,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* On return from a subroutine, the 68020 compiler restores old contents of
-   register variables relative to sp, so alloca() screws up such routines.
-   The following definitions should work on all Masscomps.  On the MC-5500
-   (a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA.  */
-#ifdef mc500
-#undef C_ALLOCA
-#define HAVE_ALLOCA
-#else
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-#endif
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/mg1.h b/src/m/mg1.h
index 13e4dbeb8bf..7d37959e441 100644
--- a/src/m/mg1.h
+++ b/src/m/mg1.h
@@ -1,5 +1,5 @@
 /* machine description file for Whitechapel Computer Works MG1 (ns16000 based).
-   Copyright (C) 1985 Free Software Foundation, Inc.
+   Copyright (C) 1985, 2002 Free Software Foundation, Inc.
    MG-1 version by L.M.McLoughlin
 
 This file is part of GNU Emacs.
@@ -92,16 +92,6 @@ NOTE-END  */
 /* hmmmm... not sure.  copied sequent.h */
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-/* hmmmm... again not sure.  so copied sequent.h again! */
-#undef C_ALLOCA
-#undef HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/mips-siemens.h b/src/m/mips-siemens.h
index c0bfd7a61f6..a2d20ba6186 100644
--- a/src/m/mips-siemens.h
+++ b/src/m/mips-siemens.h
@@ -1,5 +1,5 @@
 /* m- file for Mips machines.
-   Copyright (C) 1987, 1992, 1993, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1992, 1993, 1995, 2002 Free Software Foundation, Inc.
 
    This file contains some changes for our SVR4 based SINIX-Mips 5.4.
    I hope this is helpful to port the emacs to our RM?00 series and
@@ -104,19 +104,6 @@ NOTE-END  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#ifdef __GNUC__
-#define HAVE_ALLOCA
-#else
-#define C_ALLOCA
-#endif
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/mips.h b/src/m/mips.h
index cd16e8f394f..bed36944316 100644
--- a/src/m/mips.h
+++ b/src/m/mips.h
@@ -1,5 +1,5 @@
 /* m- file for Mips machines.
-   Copyright (C) 1987, 1992, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1992, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -99,19 +99,6 @@ NOTE-END  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#ifdef __GNUC__
-#define HAVE_ALLOCA
-#else
-#define C_ALLOCA
-#endif
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/news-r6.h b/src/m/news-r6.h
index 9279e6aec66..7018dc9571a 100644
--- a/src/m/news-r6.h
+++ b/src/m/news-r6.h
@@ -19,15 +19,6 @@
 
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/news.h b/src/m/news.h
index 8b4c5a8275e..0fdeed10f4e 100644
--- a/src/m/news.h
+++ b/src/m/news.h
@@ -1,5 +1,5 @@
 /* machine description file for Sony's NEWS workstations, NEWS-OS 3.0.
-   Copyright (C) 1985, 1986, 1989 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1989, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -48,10 +48,6 @@ NOTE-END  */
 
 #define NO_UNION_TYPE
 
-/* The News machine has alloca. */
-
-#define HAVE_ALLOCA
-
 /* Data type of load average, as read out of kmem.  */
 
 #define LOAD_AVE_TYPE double
diff --git a/src/m/next.h b/src/m/next.h
index 0c3a2466fae..b2ceb49f434 100644
--- a/src/m/next.h
+++ b/src/m/next.h
@@ -1,5 +1,5 @@
 /* Configuration file for the NeXT machine.
-   Copyright (C) 1990 Free Software Foundation, Inc.
+   Copyright (C) 1990, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -65,8 +65,6 @@ Boston, MA 02111-1307, USA.  */
 #define SEGSIZ 0x20000
 #define SEGMENT_MASK (SEGSIZ - 1)
 
-#define HAVE_ALLOCA
-
 #define SYSTEM_MALLOC
 
 #define HAVE_UNIX_DOMAIN
diff --git a/src/m/nh3000.h b/src/m/nh3000.h
index c124e1bf6c7..eafb560e471 100644
--- a/src/m/nh3000.h
+++ b/src/m/nh3000.h
@@ -1,7 +1,7 @@
 /* machine description for Harris Night Hawk Series 1200 and Series 3000
    MC68030-based systems (FPP on these is custom).  These systems are
    also known as "ecx" and "gcx".
-   Copyright (C) 1994 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -83,16 +83,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/nh4000.h b/src/m/nh4000.h
index df8c80901b0..b5db2802cfa 100644
--- a/src/m/nh4000.h
+++ b/src/m/nh4000.h
@@ -1,6 +1,6 @@
 /* machine description for Harris NightHawk 88k based machines
    (includes nh4000 and nh5000 machines).
-   Copyright (C) 1994 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -82,16 +82,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/ns32000.h b/src/m/ns32000.h
index 345d4174a76..2bacb5702d3 100644
--- a/src/m/ns32000.h
+++ b/src/m/ns32000.h
@@ -1,5 +1,5 @@
 /* machine description file for National Semiconductor 32000, running Genix.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -80,18 +80,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#if defined (__NetBSD__) || defined (__OpenBSD__)
-#define HAVE_ALLOCA
-#endif
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
@@ -101,8 +89,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define TEXT_START 0
 
-#define STACK_DIRECTION -1
-
 #if !defined (__NetBSD__) && !defined (__OpenBSD__)
 #define EXEC_MAGIC 0410
 
diff --git a/src/m/orion.h b/src/m/orion.h
index bfb85cdb6fc..c2b83bc1903 100644
--- a/src/m/orion.h
+++ b/src/m/orion.h
@@ -1,5 +1,5 @@
 /* machine description file for HLH Orion.
-   Copyright (C) 1985 Free Software Foundation, Inc.
+   Copyright (C) 1985, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -64,8 +64,3 @@ Boston, MA 02111-1307, USA.  */
 #define FSCALE 1.0
 #endif
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
-
-/* It is necessary to use the portable imitation of alloca,
-   since a true stack-allocating one is impossible.  */
-
-#define C_ALLOCA
diff --git a/src/m/pfa50.h b/src/m/pfa50.h
index 5b8d47aef53..457ea06ff12 100644
--- a/src/m/pfa50.h
+++ b/src/m/pfa50.h
@@ -1,5 +1,5 @@
 /* Machine description file for PFU A-series.
-   Copyright (C) 1988, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -75,7 +75,6 @@ Boston, MA 02111-1307, USA.  */
 /* SX/A has alloca in the PW library.  */
 
 #define LIB_STANDARD -lPW -lc
-#define HAVE_ALLOCA
 
 /* SX/A uses terminfo and lib/curses   */
 
diff --git a/src/m/plexus.h b/src/m/plexus.h
index b42c93c285a..9f8690127ec 100644
--- a/src/m/plexus.h
+++ b/src/m/plexus.h
@@ -1,5 +1,5 @@
 /* machine description file for the Plexus running System V.2.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,16 +81,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#undef C_ALLOCA
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/pmax.h b/src/m/pmax.h
index 7e9e977b314..c04bfae6331 100644
--- a/src/m/pmax.h
+++ b/src/m/pmax.h
@@ -61,11 +61,6 @@ NOTE-END  */
 #define BROKEN_O_NONBLOCK
 #endif
 
-#if defined (OSF1) || defined (MACH)
-#undef C_ALLOCA
-#define HAVE_ALLOCA
-#endif
-
 #ifndef __NetBSD__
 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
 #ifdef HAVE_LIBDNET
diff --git a/src/m/powerpcle.h b/src/m/powerpcle.h
index 5511548ee0a..f5f29fe3a0e 100644
--- a/src/m/powerpcle.h
+++ b/src/m/powerpcle.h
@@ -1,5 +1,5 @@
 /* machine description file for PowerPC.
-   Copyright (C) 1987 Free Software Foundation, Inc.
+   Copyright (C) 1987, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -54,14 +54,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
 #ifndef NOT_C_CODE
 #if __GNUC__ < 2 /* Modern versions of GCC handle alloca directly.  */
 #include <alloca.h>
diff --git a/src/m/pyrmips.h b/src/m/pyrmips.h
index 7887f6858d2..1489ddaa664 100644
--- a/src/m/pyrmips.h
+++ b/src/m/pyrmips.h
@@ -4,6 +4,5 @@
 #include "m-pyramid.h"
 
 #define SYSTEM_MALLOC
-#define HAVE_ALLOCA
 #define CANNOT_DUMP
 
diff --git a/src/m/sequent-ptx.h b/src/m/sequent-ptx.h
index 112638dbbf1..fdf977075c7 100644
--- a/src/m/sequent-ptx.h
+++ b/src/m/sequent-ptx.h
@@ -1,5 +1,5 @@
 /* machine description file for SEQUENT machines running DYNIX/ptx
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -84,18 +84,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#ifndef __GNUC__
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-#endif
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/sequent.h b/src/m/sequent.h
index 50b585bc75e..2cd06b490d8 100644
--- a/src/m/sequent.h
+++ b/src/m/sequent.h
@@ -1,5 +1,5 @@
 /* machine description file for SEQUENT BALANCE machines
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -100,16 +100,6 @@ NOTE-END */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Name of file the to look in
    for the kernel symbol table (for load average) */
 
diff --git a/src/m/sparc.h b/src/m/sparc.h
index 7b708b954b5..5bd16a0b408 100644
--- a/src/m/sparc.h
+++ b/src/m/sparc.h
@@ -1,5 +1,5 @@
 /* machine description file for Sun 4 SPARC.
-   Copyright (C) 1987 Free Software Foundation, Inc.
+   Copyright (C) 1987, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -59,14 +59,6 @@ NOTE-END  */
 
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define HAVE_ALLOCA
 #ifndef NOT_C_CODE
 #if __GNUC__ < 2 /* Modern versions of GCC handle alloca directly.  */
 #include <alloca.h>
diff --git a/src/m/sr2k.h b/src/m/sr2k.h
index e735668679a..7aed1348377 100644
--- a/src/m/sr2k.h
+++ b/src/m/sr2k.h
@@ -1,5 +1,5 @@
 /* machine description file for Hitachi SR2001/SR2201 machines.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+   Copyright (C) 1996, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -119,16 +119,6 @@ Boston, MA 02111-1307, USA.  */
    numerically.  */
 
 #define VIRT_ADDR_VARIES
-
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/* #define HAVE_ALLOCA */
 
 /* the data segment on this machine always starts at address 0x40000000. */
 
@@ -137,8 +127,6 @@ Boston, MA 02111-1307, USA.  */
 #define DATA_START    0x40000000
 #define TEXT_START    0x00000000
 
-#define STACK_DIRECTION 1 
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/symmetry.h b/src/m/symmetry.h
index 2cbb820b2d8..74ca6c09c26 100644
--- a/src/m/symmetry.h
+++ b/src/m/symmetry.h
@@ -1,5 +1,5 @@
 /* machine description file for SEQUENT SYMMETRY machines
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -44,16 +44,6 @@ Boston, MA 02111-1307, USA.  */
 #define FSCALE  1000.0
 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-/*#define HAVE_ALLOCA*/
-
 /* Name of file the to look in
    for the kernel symbol table (for load average) */
 
diff --git a/src/m/tad68k.h b/src/m/tad68k.h
index eddf1456a9a..78b961d2c77 100644
--- a/src/m/tad68k.h
+++ b/src/m/tad68k.h
@@ -1,5 +1,5 @@
 /* Machine-dependent configuration for GNU Emacs for Tadpole 68k machines
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -75,17 +75,9 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
 /* SysV has alloca in the PW library */
 
 #define LIB_STANDARD -lPW -lc
-#define HAVE_ALLOCA
 
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
diff --git a/src/m/tahoe.h b/src/m/tahoe.h
index fdb89244dbe..5bef9a1a375 100644
--- a/src/m/tahoe.h
+++ b/src/m/tahoe.h
@@ -1,5 +1,5 @@
 /* machine description file for tahoe.
-   Copyright (C) 1985 Free Software Foundation, Inc.
+   Copyright (C) 1985, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -66,7 +66,3 @@ NOTE-END  */
 /* This triggers some stuff to avoid a compiler bug */
 
 #define TAHOE_REGISTER_BUG
-
-/* System provides alloca.  */
-
-#define HAVE_ALLOCA
diff --git a/src/m/targon31.h b/src/m/targon31.h
index 16f29cac10b..86211a6e5a4 100644
--- a/src/m/targon31.h
+++ b/src/m/targon31.h
@@ -1,5 +1,5 @@
 /* targon31 machine description file 
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -82,16 +82,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-/* #define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/tek4300.h b/src/m/tek4300.h
index 30ebbc7d36d..5c88f6ef9bd 100644
--- a/src/m/tek4300.h
+++ b/src/m/tek4300.h
@@ -1,5 +1,5 @@
 /* machine description file for tek4300.
-   Copyright (C) 1988 Free Software Foundation, Inc.
+   Copyright (C) 1988, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -64,11 +64,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define NO_REMAP
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead. */
-
-#define C_ALLOCA
-
 /* setjmp and longjmp can safely replace _setjmp and _longjmp, */
 
 #define _longjmp longjmp
diff --git a/src/m/tekxd88.h b/src/m/tekxd88.h
index 6f67b509c58..c2551be4782 100644
--- a/src/m/tekxd88.h
+++ b/src/m/tekxd88.h
@@ -1,7 +1,7 @@
 /* Configuration file for the Tektronix XD88 running UTekV 3.2e,
    contributed by Kaveh Ghazi  (ghazi@caip.rutgers.edu)  1/15/93.
    You probably need to use gnu make (version 3.63 or higher.)
-   Copyright (C) 1993 Free Software Foundation, Inc.
+   Copyright (C) 1993, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,20 +81,9 @@ Boston, MA 02111-1307, USA.  */
    code will not be sharable; but that's better than failing completely.  */
 #define NO_REMAP
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
 #ifdef __GNUC__
 #  define alloca __builtin_alloca       /* Use the gcc builtin alloca() ... */
-#  define HAVE_ALLOCA   /* ... and be sure that no other ones are tried out. */
-#  undef C_ALLOCA
 #else /* not __GNUC__ */
-#  undef HAVE_ALLOCA
-#  define C_ALLOCA      /* Use the alloca() supplied in alloca.c. */
-#  define STACK_DIRECTION -1  /* The stack grows towards lower addresses. */
 #  define C_OPTIMIZE_SWITCH -O
 #endif /* __GNUC__ */
 
diff --git a/src/m/template.h b/src/m/template.h
index b6a31d2e18a..7683cbfba6e 100644
--- a/src/m/template.h
+++ b/src/m/template.h
@@ -1,5 +1,5 @@
 /* machine description file template.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -79,16 +79,6 @@ Boston, MA 02111-1307, USA.  */
 
 #define VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-#define HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/tower32.h b/src/m/tower32.h
index 31ed5c0da52..9dbb0dc6b6e 100644
--- a/src/m/tower32.h
+++ b/src/m/tower32.h
@@ -1,5 +1,5 @@
 /* machine description file for the NCR Tower 32 running System V.2.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -80,16 +80,6 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
-#define HAVE_ALLOCA
-
 /* Change some things to avoid bugs in compiler */
 
 #define SWITCH_ENUM_BUG 1
diff --git a/src/m/tower32v3.h b/src/m/tower32v3.h
index d85d631b1bb..c7406f38080 100644
--- a/src/m/tower32v3.h
+++ b/src/m/tower32v3.h
@@ -1,5 +1,5 @@
 /* machine description file for the NCR Tower 32 running System V.3.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,27 +81,16 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
 #ifdef __GNUC__
-#define HAVE_ALLOCA
 #define alloca __builtin_alloca
 #define C_OPTIMIZE_SWITCH -O -fstrength-reduce -fomit-frame-pointer
 #define LIB_STANDARD -lc /lib/crtn.o
 #else
 /* This section is correct if you do *not* change src/ymakefile so that
    CFLAGS includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH.  */
-#define HAVE_ALLOCA
 #define C_DEBUG_SWITCH -g -O0
 #define LIB_STANDARD -lc -lPW /lib/crtn.o
 /* This section is correct if you do enable C_OPTIMIZE_SWITCH.  */
-/* #define C_ALLOCA */
-/* #define STACK_DIRECTION -1 */
 /* #define C_OPTIMIZE_SWITCH -O2 */
 /* #define LIB_STANDARD -lc /lib/crtn.o */
 #endif
diff --git a/src/m/ustation.h b/src/m/ustation.h
index 70a9945dd7e..9e8c26a17da 100644
--- a/src/m/ustation.h
+++ b/src/m/ustation.h
@@ -1,5 +1,5 @@
 /* machine description file for U-station (Nihon Unisys, SS5E; Sumitomo Denkoh, U-Station E30).
-   Copyright (C) 1986, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1999, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -82,21 +82,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* On return from a subroutine, the 68020 compiler restores old contents of
-   register variables relative to sp, so alloca() screws up such routines.
-   The following definitions should work on all Masscomps.  On the MC-5500
-   (a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA.  */
-
-#define C_ALLOCA
-#undef HAVE_ALLOCA
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/vax.h b/src/m/vax.h
index 99d06d1c0d9..86ca420f2e4 100644
--- a/src/m/vax.h
+++ b/src/m/vax.h
@@ -1,5 +1,5 @@
 /* machine description file for vax.
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -100,7 +100,6 @@ NOTE-END  */
 
 #ifdef USG
 #define LIB_STANDARD -lPW -lc
-#define HAVE_ALLOCA
 
 /* There is some bug in unexec in for usg 5.2 on a vax
    which nobody who runs such a system has yet tracked down. */
@@ -111,14 +110,6 @@ NOTE-END  */
 #define TEXT_START 0
 #endif /* USG */
 
-#ifdef BSD_SYSTEM
-#define HAVE_ALLOCA
-#endif /* BSD_SYSTEM */
-
-#ifdef VMS
-#define C_ALLOCA
-#endif
-
 #ifdef BSD4_2
 #define HAVE_FTIME
 #endif
diff --git a/src/m/wicat.h b/src/m/wicat.h
index 395ebe2e255..b361418c8d8 100644
--- a/src/m/wicat.h
+++ b/src/m/wicat.h
@@ -1,5 +1,5 @@
 /* machine description file for WICAT machines.
-   Copyright (C) 1986 Free Software Foundation, Inc.
+   Copyright (C) 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -80,18 +80,6 @@ Boston, MA 02111-1307, USA.  */
 
 #undef VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* For the Wicat C compiler version 4.2, this can be removed
-   and the alloca in alloca.s used.  */
-#define C_ALLOCA
-#define STACK_DIRECTION -1  /* grows towards lower addresses on WICAT */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
diff --git a/src/m/windowsnt.h b/src/m/windowsnt.h
index 64206889251..5a3e16ddad1 100644
--- a/src/m/windowsnt.h
+++ b/src/m/windowsnt.h
@@ -1,6 +1,6 @@
 /* Machine description file for Windows NT.
 
-   Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+   Copyright (C) 1993, 1994, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -87,16 +87,8 @@ Boston, MA 02111-1307, USA.  */
 /* Text does precede data space, but this is never a safe assumption.  */
 #define VIRT_ADDR_VARIES
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-/* #define C_ALLOCA */
+/* For alloca.  */
 #include <malloc.h>
-#define HAVE_ALLOCA
 
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
diff --git a/src/m/xps100.h b/src/m/xps100.h
index e712d154030..499182d5509 100644
--- a/src/m/xps100.h
+++ b/src/m/xps100.h
@@ -1,7 +1,7 @@
 /* xps100.h for the Honeywell XPS100 running UNIX System V.2
    Mark J. Hewitt (mjh@uk.co.kernel)
 
-   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -81,23 +81,12 @@ Boston, MA 02111-1307, USA.  */
 
 /* #define VIRT_ADDR_VARIES */
 
-/* Define C_ALLOCA if this machine does not support a true alloca
-   and the one written in C should be used instead.
-   Define HAVE_ALLOCA to say that the system provides a properly
-   working alloca function and it should be used.
-   Define neither one if an assembler-language alloca
-   in the file alloca.s should be used.  */
-
-#define C_ALLOCA
-/* #define HAVE_ALLOCA */
-
 /* Define NO_REMAP if memory segmentation makes it not work well
    to change the boundary between the text section and data section
    when Emacs is dumped.  If you define this, the preloaded Lisp
    code will not be sharable; but that's better than failing completely.  */
 
 #define NO_REMAP
-#define STACK_DIRECTION -1
 #define TERMINFO
 #define SWITCH_ENUM_BUG
 #define LIB_STANDARD  -lc