Daily bump.
[official-gcc.git] / gcc / fixproto
bloba12349e5d9e38e623823b5feeb599d8f78e05f0e
1 #!/bin/sh
3 # SYNOPSIS
4 # fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
6 # COPYRIGHT
7 # Copyright (C) 1993, 1994, 1997, 1998, 2002, 2003, 2007
8 # Free Software Foundation, Inc.
9 # This file is part of GCC.
11 # GCC 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 3, or (at your option)
14 # any later version.
16 # GCC 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 GCC; see the file COPYING3. If not see
23 # <http://www.gnu.org/licenses/>.
25 # DESCRIPTION
26 # Adjunct script for GCC to populate a directory with ANSI,
27 # Posix.1, and C++ compatible header files.
29 # Each file found under SOURCE-DIR-ALL is analyzed and "fixed."
30 # Only standard ANSI/POSIX files found under SOURCE-DIR-STD
31 # are analyzed and "fixed."
32 # The SOURCE-DIRs are searched in order; a file found
33 # under multiple SOURCE-DIRs is only handled for the first one.
35 # STRATEGY
36 # Each include file is fed through cpp, and the scan-decls program
37 # parses it, and emits any found function declarations.
38 # The fix-header program analyzes the scan-decls output,
39 # together with the original include file, and writes a "fixed"
40 # include file, if needed.
42 # The comment at the beginning of fix-header.c lists specifically
43 # what kind of changes are made.
45 # NOTE
46 # Some file space will be wasted, because the original header
47 # files are copied. An earlier version just included the original
48 # by "reference", using GNU cpp's #include_next mechanism.
49 # This is currently not done, partly because #include_next is
50 # fragile (susceptible to version incompatibilities, and depends
51 # and GCC-specific features), and partly for performance reasons.
53 # AUTHORS
54 # Ron Guilmette (rfg@netcom.com) (original idea and code)
55 # Per Bothner (bothner@cygnus.com) (major re-write)
57 dirname=`echo "$0" | sed 's,^[^/]*$,.,;s,//*[^/]*$,,'`
58 progname=`echo "$0" | sed 's,.*/,,'`
59 original_dir=`${PWDCMD-pwd}`
60 FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
61 DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
63 if mkdir -p . 2> /dev/null; then
64 # Great, mkdir accepts -p
65 mkinstalldirs="mkdir -p"
66 else
67 # We expect mkinstalldirs to be passed in the environment.
68 # If it is not, assume it is in the directory that contains this script.
69 mkinstalldirs=${mkinstalldirs-"/bin/sh $dirname/mkinstalldirs"}
70 if $mkinstalldirs . 2> /dev/null; then
72 else
73 # But, in case of failure, fallback to plain mkdir, and hope it works
74 mkinstalldirs=mkdir
78 if [ `echo $1 | wc -w` = 0 ] ; then
79 echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
80 exit 1
83 std_files="ctype.h dirent.h errno.h curses.h fcntl.h grp.h locale.h math.h pwd.h setjmp.h signal.h stdio.h stdlib.h string.h sys/socket.h sys/stat.h sys/times.h sys/resource.h sys/utsname.h sys/wait.h tar.h termios.h time.h unistd.h utime.h"
85 rel_target_dir=$1
86 # All files in $src_dir_all (normally same as $rel_target_dir) are
87 # processed.
88 src_dir_all=$2
89 # In $src_dir_std (normally same as /usr/include), only the
90 # "standard" ANSI/POSIX files listed in $std_files are processed.
91 src_dir_std=$3
93 case $rel_target_dir in
94 /* | [A-Za-z]:[\\/]*)
95 abs_target_dir=$rel_target_dir
98 abs_target_dir=$original_dir/$rel_target_dir
100 esac
102 # Determine whether this system has symbolic links.
103 if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
104 rm -f $rel_target_dir/ShouldNotExist
105 LINKS=true
106 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
107 rm -f /tmp/ShouldNotExist
108 LINKS=true
109 else
110 LINKS=false
113 if [ \! -d $abs_target_dir ] ; then
114 echo $progname\: creating directory $rel_target_dir
115 $mkinstalldirs $abs_target_dir
118 echo $progname\: populating \`$rel_target_dir\'
120 include_path=""
122 if [ `echo $* | wc -w` != 0 ] ; then
123 for rel_source_dir in $src_dir_all $src_dir_std; do
124 case $rel_source_dir in
125 /* | [A-Za-z]:[\\/]*)
126 abs_source_dir=$rel_source_dir
129 abs_source_dir=$original_dir/$rel_source_dir
131 esac
132 include_path="$include_path -I$abs_source_dir"
133 done
136 done_dirs=""
137 subdirs_made=""
138 echo "" >fixproto.list
140 for code in ALL STD ; do
142 subdirs="."
144 case $code in
145 ALL)
146 rel_source_dir=$src_dir_all
148 dirs="."
149 levels=2
150 while $LINKS && test -n "$dirs" -a $levels -gt 0
152 levels=`expr $levels - 1`
153 newdirs=
154 for d in $dirs ; do
155 # Find all directories under $d, relative to $d, excluding $d itself.
156 # Assume directory names ending in CC or containing ++ are
157 # for C++, so skip those.
158 subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
159 sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
160 -e '/CC$/d' -e '/[+][+]/d'`
161 links=
162 links=`cd $rel_source_dir; find $d/. -type l -print | \
163 sed -e "s|$d/./|$d/|" -e 's|^\./||'`
164 for link in $links --dummy-- ; do
165 test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
166 done
167 done
168 dirs="$newdirs"
169 subdirs="$subdirs $newdirs"
170 done
172 STD)
173 rel_source_dir=$src_dir_std
175 esac
177 case $rel_source_dir in
178 /* | [A-Za-z]:[\\/]*)
179 abs_source_dir=$rel_source_dir
182 abs_source_dir=$original_dir/$rel_source_dir
184 esac
186 if [ \! -d $abs_source_dir ] ; then
187 echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
188 continue
191 for rel_source_subdir in $subdirs; do
193 abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
194 if [ \! -d $abs_target_subdir ] ; then
195 if $mkinstalldirs $abs_target_subdir ; then
196 subdirs_made="$abs_target_subdir $subdirs_made"
199 # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
200 rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
202 case $code in
203 ALL)
204 # The 'sed' is in case the *.h matches nothing, which yields "*.h"
205 # which would then get re-globbed in the current directory. Sigh.
206 rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
209 STD)
210 files_to_check="$std_files"
211 rel_source_files=""
213 # Also process files #included by the $std_files.
214 while [ -n "${files_to_check}" ]
216 new_files_to_check=""
217 for file in $files_to_check ; do
218 xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
219 # Create the dir where this file will go when fixed.
220 xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
221 if [ \! -d $abs_target_subdir/$xxdir ] ; then
222 if $mkinstalldirs $abs_target_subdir/$xxdir ; then
223 subdirs_made="$abs_target_subdir/$xxdir $subdirs_made"
226 # Just in case we have edited out a symbolic link
227 if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
228 file=$xxfile
230 case " $rel_source_files " in
231 *" ${file} "*)
232 # Already seen $file; nothing to do
235 if test -f $src_dir_std/$file ; then
236 rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
237 # For #include "foo.h", that might be either "foo.h"
238 # or "${rel_dir}foo.h (or something bogus).
239 new_files_to_check="$new_files_to_check "`sed -n \
240 -e 's@ @ @g' \
241 -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
242 's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
243 <$src_dir_std/$file`
244 rel_source_files="$rel_source_files $file"
247 esac
248 done
249 files_to_check="$new_files_to_check"
250 done
251 rel_source_files="$rel_source_files"
253 esac
255 for filename in $rel_source_files ; do
256 rel_source_file=${rel_source_prefix}${filename}
257 abs_source_file=$abs_source_dir/$rel_source_file
258 abs_target_file=$abs_target_dir/$rel_source_file
260 if test "$filename" = 'NONE' ; then
261 echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
262 # If target file exists, check if was written while processing one
263 # of the earlier source directories; if so ignore it.
264 elif test -f $abs_target_file -a -n "$done_dirs" \
265 && grep "$rel_source_file" fixproto.list >/dev/null
266 then true
267 else
268 $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
269 if test $? != 0 ; then exit 1 ; fi
270 echo "${rel_source_file}" >>fixproto.list
272 done
273 done
274 done_dirs="$done_dir $rel_source_dir"
275 done
277 # This might be more cleanly moved into the main loop, by adding
278 # a <dummy> source directory at the end. FIXME!
280 # All the headers we create define size_t and NULL.
281 for rel_source_file in unistd.h stdlib.h string.h time.h ; do
282 if grep "$rel_source_file" fixproto.list >/dev/null ; then
283 : # It exists, we don't need to make it
284 else
285 echo Adding missing $rel_source_file
286 rel_source_ident=`echo $rel_source_file | tr ./ __`
287 cat >tmp.h <<EOF
288 /* Fake ${rel_source_file}, created by GCC.
289 The functions declared in this file do not necessarily exist in
290 your C library. */
291 #ifndef __${rel_source_ident}
292 #define __${rel_source_ident}
294 #define __need_NULL
295 #define __need_size_t
296 #include <stddef.h>
298 # Insert special stuff for particular files here.
299 case ${rel_source_file} in
300 time.h)
301 # If time.h doesn't exist, find out if sys/time.h does.
302 if test -f $src_dir_std/sys/time.h \
303 || grep "sys/time.h" fixproto.list >/dev/null ; then
304 # It does; include it and hope it has the needed declarations.
305 # Some versions require sys/types.h.
306 cat >>tmp.h <<EOF
308 #include <sys/types.h>
309 #include <sys/time.h>
311 else
312 # It doesn't. Make up plausible definitions for time_t, clock_t.
313 # Forward-declare struct tm. Hope nobody tries to use it. (Odds
314 # are they won't.)
315 cat >>tmp.h <<EOF
317 typedef long time_t;
318 typedef long clock_t;
319 struct tm;
321 fi ;;
322 esac
323 cat >>tmp.h <<EOF
325 #endif /* __${rel_source_ident} */
327 ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
328 if test $? != 0 ; then exit 1 ; fi
329 if test -f $abs_target_dir/$rel_source_file ; then
330 rm tmp.h
331 else
332 mv tmp.h $abs_target_dir/$rel_source_file
335 done
337 # Remove any directories that we made that are still empty.
338 rmdir $subdirs_made 2>/dev/null
340 exit 0