Cleanup autoconfigury of vfork().

gdb/ChangeLog

@@ -1,3 +1,13 @@
+Tue Jan 30 17:27:11 2001  Andrew Cagney  <cagney@redhat.com>
+
+	* configure.in (AC_CHECK_FUNCS): Replace vfork test with
+ 	AC_FUNC_VFORK macro.
+	* config.in, configure: Re-generate.
+
+	* gdb_vfork.h: New file.
+	* ser-pipe.c (pipe_open): Update. Include "gdb_vfork.h".
+	* fork-child.c (fork_inferior): Ditto.
+	
 Tue Jan 30 17:09:07 2001  Andrew Cagney  <cagney@redhat.com>
 
 	* defs.h (strsave): Delete declaration.

gdb/config.in

@@ -29,12 +29,18 @@
 /* Define if you have a working `mmap' system call.  */
 #undef HAVE_MMAP
 
+/* Define if you have <vfork.h>.  */
+#undef HAVE_VFORK_H
+
 /* Define as __inline if that's what the C compiler calls it.  */
 #undef inline
 
 /* Define to `long' if <sys/types.h> doesn't define.  */
 #undef off_t
 
+/* Define to `int' if <sys/types.h> doesn't define.  */
+#undef pid_t
+
 /* Define if you need to in order for stat and other things to work.  */
 #undef _POSIX_SOURCE
 
@@ -59,6 +65,9 @@
 /* Define if you have the ANSI C header files.  */
 #undef STDC_HEADERS
 
+/* Define vfork as fork if vfork does not work.  */
+#undef vfork
+
 /* Define if compiling on Solaris 7. */
 #undef _MSE_INT_H
 
@@ -225,9 +234,6 @@
 /* Define if you have the strchr function.  */
 #undef HAVE_STRCHR
 
-/* Define if you have the vfork function.  */
-#undef HAVE_VFORK
-
 /* Define if you have the <argz.h> header file.  */
 #undef HAVE_ARGZ_H
 

gdb/configure.in

@@ -130,7 +130,8 @@ AC_HEADER_STAT
 
 AC_C_CONST
 
-AC_CHECK_FUNCS(setpgid sbrk sigaction isascii bzero bcopy btowc poll sigprocmask vfork)
+AC_CHECK_FUNCS(setpgid sbrk sigaction isascii bzero bcopy btowc poll sigprocmask)
+AC_FUNC_VFORK
 AC_FUNC_ALLOCA
 
 # See if machine/reg.h supports the %fs and %gs i386 segment registers.

gdb/fork-child.c

@@ -25,6 +25,7 @@
 #include "inferior.h"
 #include "target.h"
 #include "gdb_wait.h"
+#include "gdb_vfork.h"
 #include "gdbcore.h"
 #include "terminal.h"
 #include "gdbthread.h"
@@ -244,14 +245,10 @@ fork_inferior (char *exec_file, char *allargs, char **env,
   if (pre_trace_fun != NULL)
     (*pre_trace_fun) ();
 
-#ifdef HAVE_VFORK
   if (debug_fork)
     pid = fork ();
   else
     pid = vfork ();
-#else
-  pid = fork ();
-#endif
 
   if (pid < 0)
     perror_with_name ("vfork");

gdb/gdb_vfork.h

@@ -0,0 +1,28 @@
+/* GDB-friendly replacement for <vfork.h>.
+   Copyright 2001 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef GDB_VFORK_H
+#define GDB_VFORK_H
+
+#if HAVE_VFORK_H
+#include <vfork.h>
+#endif
+
+#endif /* GDB_VFORK_H */

gdb/ser-pipe.c

@@ -24,6 +24,8 @@
 #include "serial.h"
 #include "ser-unix.h"
 
+#include "gdb_vfork.h"
+
 #include <sys/types.h>
 #include "gdb_wait.h"
 #include <sys/socket.h>
@@ -64,11 +66,7 @@ pipe_open (serial_t scb, const char *name)
   if (socketpair (AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
     return -1;
 
-#ifdef HAVE_VFORK
   pid = vfork ();
-#else
-  pid = fork ();
-#endif
   
   /* Error. */
   if (pid == -1)