re PR bootstrap/38580 (Bootstrap broken on mingw32)

	PR bootstrap/38580
	* gcc.c (process_command): Replace call to execvp with calls
	to pex_one and exit.

From-SVN: r143330

gcc/ChangeLog

+2009-01-13  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	PR bootstrap/38580
+	* gcc.c (process_command): Replace call to execvp with calls
+	to pex_one and exit.
+
 2009-01-03  Anatoly Sokolov  <aesok@post.ru>
 
 	PR target/29141

gcc/gcc.c

 /* Compiler driver program that can handle many languages.
    Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -3382,6 +3382,9 @@ process_command (int argc, const char **argv)
       char **new_argv;
       char *new_argv0;
       int baselen;
+      int status = 0;
+      int err = 0;
+      const char *errmsg;
 
       while (argc > 1 && argv[1][0] == '-'
 	     && (argv[1][1] == 'V'
@@ -3424,8 +3427,18 @@ process_command (int argc, const char **argv)
       new_argv = XDUPVEC (char *, argv, argc + 1);
       new_argv[0] = new_argv0;
 
-      execvp (new_argv0, new_argv);
-      fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
+      errmsg = pex_one (PEX_SEARCH, new_argv0, new_argv, progname, NULL,
+			NULL, &status, &err);
+
+      if (errmsg)
+	{
+	  if (err == 0)
+	    fatal ("couldn't run '%s': %s", new_argv0, errmsg);
+	  else
+	    fatal ("couldn't run '%s': %s: %s", new_argv0, errmsg,
+		    xstrerror (err));
+        }
+      exit (status);
     }
 
   /* Set up the default search paths.  If there is no GCC_EXEC_PREFIX,