PR ld/11843
[binutils.git] / ylwrap
blob84d563405e6e29a64a4ffdb07da262e2e5628dba
1 #! /bin/sh
2 # ylwrap - wrapper for lex/yacc invocations.
4 scriptversion=2009-04-28.21; # UTC
6 # Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
7 # 2007, 2009 Free Software Foundation, Inc.
9 # Written by Tom Tromey <tromey@cygnus.com>.
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 2, or (at your option)
14 # any later version.
16 # This program is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
21 # You should have received a copy of the GNU General Public License
22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
24 # As a special exception to the GNU General Public License, if you
25 # distribute this file as part of a program that contains a
26 # configuration script generated by Autoconf, you may include it under
27 # the same distribution terms that you use for the rest of that program.
29 # This file is maintained in Automake, please report
30 # bugs to <bug-automake@gnu.org> or send patches to
31 # <automake-patches@gnu.org>.
33 case "$1" in
34 '')
35 echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
36 exit 1
38 --basedir)
39 basedir=$2
40 shift 2
42 -h|--h*)
43 cat <<\EOF
44 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
46 Wrapper for lex/yacc invocations, renaming files as desired.
48 INPUT is the input file
49 OUTPUT is one file PROG generates
50 DESIRED is the file we actually want instead of OUTPUT
51 PROGRAM is program to run
52 ARGS are passed to PROG
54 Any number of OUTPUT,DESIRED pairs may be used.
56 Report bugs to <bug-automake@gnu.org>.
57 EOF
58 exit $?
60 -v|--v*)
61 echo "ylwrap $scriptversion"
62 exit $?
64 esac
67 # The input.
68 input="$1"
69 shift
70 case "$input" in
71 [\\/]* | ?:[\\/]*)
72 # Absolute path; do nothing.
75 # Relative path. Make it absolute.
76 input="`pwd`/$input"
78 esac
80 pairlist=
81 while test "$#" -ne 0; do
82 if test "$1" = "--"; then
83 shift
84 break
86 pairlist="$pairlist $1"
87 shift
88 done
90 # The program to run.
91 prog="$1"
92 shift
93 # Make any relative path in $prog absolute.
94 case "$prog" in
95 [\\/]* | ?:[\\/]*) ;;
96 *[\\/]*) prog="`pwd`/$prog" ;;
97 esac
99 # FIXME: add hostname here for parallel makes that run commands on
100 # other machines. But that might take us over the 14-char limit.
101 dirname=ylwrap$$
102 trap "cd '`pwd`'; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
103 mkdir $dirname || exit 1
105 cd $dirname
107 case $# in
108 0) "$prog" "$input" ;;
109 *) "$prog" "$@" "$input" ;;
110 esac
111 ret=$?
113 if test $ret -eq 0; then
114 set X $pairlist
115 shift
116 first=yes
117 # Since DOS filename conventions don't allow two dots,
118 # the DOS version of Bison writes out y_tab.c instead of y.tab.c
119 # and y_tab.h instead of y.tab.h. Test to see if this is the case.
120 y_tab_nodot="no"
121 if test -f y_tab.c || test -f y_tab.h; then
122 y_tab_nodot="yes"
125 # The directory holding the input.
126 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
127 # Quote $INPUT_DIR so we can use it in a regexp.
128 # FIXME: really we should care about more than `.' and `\'.
129 input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
131 while test "$#" -ne 0; do
132 from="$1"
133 # Handle y_tab.c and y_tab.h output by DOS
134 if test $y_tab_nodot = "yes"; then
135 if test $from = "y.tab.c"; then
136 from="y_tab.c"
137 else
138 if test $from = "y.tab.h"; then
139 from="y_tab.h"
143 if test -f "$from"; then
144 # If $2 is an absolute path name, then just use that,
145 # otherwise prepend `../'.
146 case "$2" in
147 [\\/]* | ?:[\\/]*) target="$2";;
148 *) target="../$2";;
149 esac
151 # We do not want to overwrite a header file if it hasn't
152 # changed. This avoid useless recompilations. However the
153 # parser itself (the first file) should always be updated,
154 # because it is the destination of the .y.c rule in the
155 # Makefile. Divert the output of all other files to a temporary
156 # file so we can compare them to existing versions.
157 if test $first = no; then
158 realtarget="$target"
159 target="tmp-`echo $target | sed s/.*[\\/]//g`"
161 # Edit out `#line' or `#' directives.
163 # We don't want the resulting debug information to point at
164 # an absolute srcdir; it is better for it to just mention the
165 # .y file with no path.
167 # We want to use the real output file name, not yy.lex.c for
168 # instance.
170 # We want the include guards to be adjusted too.
171 FROM=`echo "$from" | sed \
172 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
173 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
174 TARGET=`echo "$2" | sed \
175 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
176 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
178 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
179 -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
181 # Check whether header files must be updated.
182 if test $first = no; then
183 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
184 echo "$2" is unchanged
185 rm -f "$target"
186 else
187 echo updating "$2"
188 mv -f "$target" "$realtarget"
191 else
192 # A missing file is only an error for the first file. This
193 # is a blatant hack to let us support using "yacc -d". If -d
194 # is not specified, we don't want an error when the header
195 # file is "missing".
196 if test $first = yes; then
197 ret=1
200 shift
201 shift
202 first=no
203 done
204 else
205 ret=$?
208 # Remove the directory.
209 cd ..
210 rm -rf $dirname
212 exit $ret
214 # Local Variables:
215 # mode: shell-script
216 # sh-indentation: 2
217 # eval: (add-hook 'write-file-hooks 'time-stamp)
218 # time-stamp-start: "scriptversion="
219 # time-stamp-format: "%:y-%02m-%02d.%02H"
220 # time-stamp-time-zone: "UTC"
221 # time-stamp-end: "; # UTC"
222 # End: