Import ylwrap from automake-1.5, as we're going to make some custom changes

to it.

svn path=/trunk/yasm/; revision=742

diff --git a/config/ylwrap b/config/ylwrap
new file mode 100755 (executable)
index 0000000..5ea68e4
--- /dev/null
+++ b/config/ylwrap
@@ -0,0 +1,143 @@
+#! /bin/sh
+# ylwrap - wrapper for lex/yacc invocations.
+# Copyright 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# 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, 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.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Usage:
+#     ylwrap INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
+# * INPUT is the input file
+# * OUTPUT is file PROG generates
+# * DESIRED is file we actually want
+# * PROGRAM is program to run
+# * ARGS are passed to PROG
+# Any number of OUTPUT,DESIRED pairs may be used.
+
+# The input.
+input="$1"
+shift
+case "$input" in
+ [\\/]* | ?:[\\/]*)
+    # Absolute path; do nothing.
+    ;;
+ *)
+    # Relative path.  Make it absolute.
+    input="`pwd`/$input"
+    ;;
+esac
+
+# The directory holding the input.
+input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
+# Quote $INPUT_DIR so we can use it in a regexp.
+# FIXME: really we should care about more than `.' and `\'.
+input_rx=`echo "$input_dir" | sed -e 's,\\\\,\\\\\\\\,g' -e 's,\\.,\\\\.,g'`
+
+echo "got $input_rx"
+
+pairlist=
+while test "$#" -ne 0; do
+   if test "$1" = "--"; then
+      shift
+      break
+   fi
+   pairlist="$pairlist $1"
+   shift
+done
+
+# The program to run.
+prog="$1"
+shift
+# Make any relative path in $prog absolute.
+case "$prog" in
+ [\\/]* | ?:[\\/]*) ;;
+ *[\\/]*) prog="`pwd`/$prog" ;;
+esac
+
+# FIXME: add hostname here for parallel makes that run commands on
+# other machines.  But that might take us over the 14-char limit.
+dirname=ylwrap$$
+trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
+mkdir $dirname || exit 1
+
+cd $dirname
+
+$prog ${1+"$@"} "$input"
+status=$?
+
+if test $status -eq 0; then
+   set X $pairlist
+   shift
+   first=yes
+   # Since DOS filename conventions don't allow two dots,
+   # the DOS version of Bison writes out y_tab.c instead of y.tab.c
+   # and y_tab.h instead of y.tab.h. Test to see if this is the case.
+   y_tab_nodot="no"
+   if test -f y_tab.c || test -f y_tab.h; then
+      y_tab_nodot="yes"
+   fi
+
+   while test "$#" -ne 0; do
+      from="$1"
+      # Handle y_tab.c and y_tab.h output by DOS
+      if test $y_tab_nodot = "yes"; then
+        if test $from = "y.tab.c"; then
+           from="y_tab.c"
+        else
+           if test $from = "y.tab.h"; then
+              from="y_tab.h"
+           fi
+        fi
+      fi
+      if test -f "$from"; then
+         # If $2 is an absolute path name, then just use that,
+         # otherwise prepend `../'.
+         case "$2" in
+          [\\/]* | ?:[\\/]*) target="$2";;
+          *) target="../$2";;
+        esac
+
+        # Edit out `#line' or `#' directives.  We don't want the
+        # resulting debug information to point at an absolute srcdir;
+        # it is better for it to just mention the .y file with no
+        # path.
+        sed -e "/^#/ s,$input_rx,," "$from" > "$target" || status=$?
+      else
+        # A missing file is only an error for the first file.  This
+        # is a blatant hack to let us support using "yacc -d".  If -d
+        # is not specified, we don't want an error when the header
+        # file is "missing".
+        if test $first = yes; then
+           status=1
+        fi
+      fi
+      shift
+      shift
+      first=no
+   done
+else
+   status=$?
+fi
+
+# Remove the directory.
+cd ..
+rm -rf $dirname
+
+exit $status