Hi, here's a little patch to make acm-4.7 compile under Linux.
It works for me, I hope it will for you but I'm not responsible for
any damge this could do etc.

just use patch -p0 < 'thispatch'
while you're in the acm parent source directory (ie ls => acm-4.7)

Have fun!

			Jeremie PETIT
			petit@aurora.unice.fr

Note: I've sent this patch to the author, but he didn't reply, so I put it
here.

------------------ patch file --------------------------------(snip)---

diff -c -r acm-4.7/V/lib/VReadObject.c acm-4.7+/V/lib/VReadObject.c
*** acm-4.7/V/lib/VReadObject.c	Tue Mar  1 19:56:51 1994
--- acm-4.7+/V/lib/VReadObject.c	Fri May 26 19:28:34 1995
***************
*** 116,122 ****
--- 116,124 ----
  {
  	register int	c, state = STATE_INITIAL, seen_dot = 0;
  	register struct keyword_info	*q;
+ #ifndef linux
  	extern double atof();
+ #endif
  
  	token_length = 0;
  
diff -c -r acm-4.7/src/acm.c acm-4.7+/src/acm.c
*** acm-4.7/src/acm.c	Fri Jan 28 15:24:37 1994
--- acm-4.7+/src/acm.c	Fri May 26 21:16:44 1995
***************
*** 40,46 ****
  
  jmp_buf	dead;
  
! #ifdef SIGVOID
  void
  #endif
  done () {
--- 40,46 ----
  
  jmp_buf	dead;
  
! #if defined(SIGVOID) || defined(linux)
  void
  #endif
  done () {
***************
*** 63,69 ****
--- 63,73 ----
  #else
  	int	pid;
  #endif
+ #ifndef linux
  	struct passwd	*pwent, *getpwuid();
+ #else
+ 	struct passwd   *pwent;
+ #endif
  	struct sockaddr_in sin;
  	struct hostent	*h = (struct hostent *) NULL;
  
diff -c -r acm-4.7/src/inventory.c acm-4.7+/src/inventory.c
*** acm-4.7/src/inventory.c	Tue Mar  1 19:57:21 1994
--- acm-4.7+/src/inventory.c	Fri May 26 19:29:36 1995
***************
*** 411,417 ****
--- 411,419 ----
  {
  	register int	c, state = STATE_INITIAL;
  	register struct keyword_info	*q;
+ #ifndef linux
  	extern double atof();
+ #endif
  
  	token_length = 0;
  
diff -c -r acm-4.7/src/kill-acms acm-4.7+/src/kill-acms
*** acm-4.7/src/kill-acms	Tue Nov  2 22:58:01 1993
--- acm-4.7+/src/kill-acms	Fri May 26 19:09:29 1995
***************
*** 1,6 ****
--- 1,8 ----
  #! /bin/sh
  if [ "`uname`" = "SunOS" ]; then
    pscmd="ps -aux"
+ elif [ "`uname`" = "Linux" ]; then
+   pscmd="ps -aux"
  else
    pscmd="ps -ef"
  fi
diff -c -r acm-4.7/src/manifest.h acm-4.7+/src/manifest.h
*** acm-4.7/src/manifest.h	Tue Oct  4 16:35:52 1994
--- acm-4.7+/src/manifest.h	Fri May 26 16:32:57 1995
***************
*** 32,38 ****
  #ifdef hpux
  #define sigvec sigvector
  #else
! #ifdef SVR4
  #define sigvec                sigaction
  #define sv_handler    sa_handler
  #define sv_mask               sa_mask
--- 32,38 ----
  #ifdef hpux
  #define sigvec sigvector
  #else
! #if defined(SVR4) || defined(linux)
  #define sigvec                sigaction
  #define sv_handler    sa_handler
  #define sv_mask               sa_mask
diff -c -r acm-4.7/src/server.c acm-4.7+/src/server.c
*** acm-4.7/src/server.c	Thu Sep 29 17:31:18 1994
--- acm-4.7+/src/server.c	Fri May 26 19:30:38 1995
***************
*** 60,66 ****
--- 60,68 ----
  int sdebug = 1;
  int listen_socket;
  char *sceneFile = (char *) NULL;
+ #ifndef linux
  extern double atof();
+ #endif
  
  void parseinfo (s, a, b, c)
  char *s, *a, *b, *c; {