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1#!/bin/sh
2#
3# SYNOPSIS
d7943819 4# fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
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5#
6# COPYRIGHT
7# Copyright (C) 1993 Free Software Foundation, Inc.
8# This file is part of GNU CC.
9#
10# GNU CC is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2, or (at your option)
13# any later version.
14#
15# GNU CC is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with GNU CC; see the file COPYING. If not, write to
22# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24# DESCRIPTION
25# Adjunct script for GNU CC to populate a directory with ANSI,
26# Posix.1, and C++ compatible header files.
27#
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28# Each file found under SOURCE-DIR-ALL is analyzed and "fixed."
29# Only standard ANSI/POSIX files found under SOURCE-DIR-STD
30# are analyzed and "fixed."
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31# The SOURCE-DIRs are searched in order; a file found
32# under multiple SOURCE-DIRs is only handled for the first one.
33#
34# STRATEGY
35# Each include file is fed through cpp, and the scan-decls program
36# parses it, and emits any found function declarations.
aab7bd19 37# The fix-header program analyzes the scan-decls output,
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38# together with the original include file, and writes a "fixed"
39# include file, if needed.
40#
aab7bd19 41# The comment at the beginning of fix-header.c lists specifically
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42# what kind of changes are made.
43#
44# NOTE
45# Some file space will be wasted, because the original header
46# files are copied. An earlier version just included the original
47# by "reference", using GNU cpp's #include_next mechanism.
48# This is currently not done, partly because #include_next is
49# fragile (susceptible to version incompatibilties, and depends
50# and GCC-specific features), and partly for performance reasons.
51#
52# AUTHORS
53# Ron Guilmette (rfg@netcom.com) (original idea and code)
54# Per Bothner (bothner@cygnus.com) (major re-write)
55
56progname=$0
57progname=`basename $progname`
58original_dir=`pwd`
7afe1b4d 59CPP=${CPP-./cpp}
e9cd0b25 60
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61if [ `echo $1 | wc -w` = 0 ] ; then
62 echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
63 exit 1
64fi
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65
66std_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/stat.h sys/times.h sys/resource.h sys/utsname.h sys/wait.h tar.h termios.h time.h unistd.h"
67
7afe1b4d 68rel_target_dir=$1
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69# All files in $src_dir_all (normally same as $rel_target_dir) are
70# processed.
71src_dir_all=$2
72# In $src_dir_std (normally same as /usr/include), only the
73# "standard" ANSI/POSIX files listed in $std_files are processed.
74src_dir_std=$3
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75
76if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
77 abs_target_dir=$original_dir/$rel_target_dir
78else
79 abs_target_dir=$rel_target_dir
80fi
81
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82# Determine whether this system has symbolic links.
83if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
84 rm -f $rel_target_dir/ShouldNotExist
85 LINKS=true
86elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
87 rm -f /tmp/ShouldNotExist
88 LINKS=true
89else
90 LINKS=false
91fi
92
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93if [ \! -d $abs_target_dir ] ; then
94 echo $progname\: creating directory $rel_target_dir
95 mkdir $abs_target_dir
96fi
97
98echo $progname\: populating \`$rel_target_dir\'
99
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100include_path=""
101
102if [ `echo $* | wc -w` != 0 ] ; then
d7943819 103 for rel_source_dir in $src_dir_all $src_dir_std; do
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104 if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
105 abs_source_dir=$original_dir/$rel_source_dir
106 else
107 abs_source_dir=$rel_source_dir
108 fi
109 include_path="$include_path -I$abs_source_dir"
110 done
111fi
112
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113required_stdlib_h="abort abs atexit atof atoi atol bsearch calloc exit free getenv labs malloc qsort rand realloc srand strtod strtol strtoul system"
114# "div ldiv", - ignored because these depend on div_t, ldiv_t
115# ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
116# Should perhaps also add NULL
117required_unistd_h="_exit access alarm chdir chown close ctermid cuserid dup dup2 execl execle execlp execv execve execvp fork fpathconf getcwd getegid geteuid getgid getgroups getlogin getpgrp getpid getppid getuid isatty link lseek pathconf pause pipe read rmdir setgid setpgid setsid setuid sleep sysconf tcgetpgrp tcsetpgrp ttyname unlink write"
118
7afe1b4d 119done_dirs=""
e9cd0b25 120echo "" >fixproto.list
7afe1b4d 121
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122for code in ALL STD ; do
123
124 subdirs="."
125
126 case $code in
127 ALL)
128 rel_source_dir=$src_dir_all
e9cd0b25 129
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130 dirs="."
131 levels=2
132 while $LINKS && test -n "$dirs" -a $levels -gt 0
133 do
134 levels=`expr $levels - 1`
135 newdirs=
136 for d in $dirs ; do
137 # Find all directories under $d, relative to $d, excluding $d itself.
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138 # Assume directory names ending in CC or containing ++ are
139 # for C++, so skip those.
d7943819 140 subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
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141 sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
142 -e '/CC$/d' -e '/\+\+/d'`
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143 links=
144 links=`cd $rel_source_dir; find $d/. -type l -print | \
e9cd0b25 145 sed -e "s|$d/./|$d/|" -e 's|^\./||'`
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146 for link in $links --dummy-- ; do
147 test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
148 done
e9cd0b25 149 done
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150 dirs="$newdirs"
151 subdirs="$subdirs $newdirs"
7afe1b4d 152 done
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153 ;;
154 STD)
155 rel_source_dir=$src_dir_std
156 ;;
157 esac
158
159 if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
160 abs_source_dir=$original_dir/$rel_source_dir
161 else
162 abs_source_dir=$rel_source_dir
163 fi
164
165 if [ \! -d $abs_source_dir ] ; then
166 echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
167 continue
168 fi
169
170 for rel_source_subdir in $subdirs; do
e9cd0b25 171
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172 abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
173 if [ \! -d $abs_target_subdir ] ; then
174 mkdir $abs_target_subdir
175 fi
176 # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
177 rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
7afe1b4d 178
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179 case $code in
180 ALL)
181 # The 'sed' is in case the *.h matches nothing, which yields "*.h"
182 # which would then get re-globbed in the current directory. Sigh.
183 rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
184 ;;
185
186 STD)
187 files_to_check="$std_files"
188 rel_source_files=""
189
190 # Also process files #included by the $std_files.
191 while [ -n "${files_to_check}" ]
192 do
193 new_files_to_check=""
194 for file in $files_to_check ; do
195 case " $rel_source_files " in
196 *" ${file} "*)
197 # Already seen $file; nothing to do
198 ;;
199 *)
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200 if test -f $src_dir_std/$file ; then
201 rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
202 # For #include "foo.h", that might be either "foo.h"
203 # or "${rel_dir}foo.h (or something bogus).
204 new_files_to_check="$new_files_to_check "`sed -n \
d7943819 205 -e 's@ @ @g' \
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206 -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
207 's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
208 <$src_dir_std/$file`
209 rel_source_files="$rel_source_files $file"
210 fi
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211 ;;
212 esac
213 done
214 files_to_check="$new_files_to_check"
215 done
216 rel_source_files="$rel_source_files"
217 ;;
218 esac
7afe1b4d 219
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220 for filename in $rel_source_files ; do
221 rel_source_file=${rel_source_prefix}${filename}
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222 abs_source_file=$abs_source_dir/$rel_source_file
223 abs_target_file=$abs_target_dir/$rel_source_file
224
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225 if test "$filename" = 'NONE' ; then
226 echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
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227 # If target file exists, check if was written while processing one
228 # of the earlier source directories; if so ignore it.
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229 elif test -f $abs_target_file -a -n "$done_dirs" \
230 && grep "$rel_source_file" fixproto.list >/dev/null
231 then true
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232 else
233 # echo doing $rel_source_file from $abs_source_dir
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234 required_list=
235 extra_check_list=
236 case $rel_source_file in
237 ctype.h)
238 required_list="isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit tolower toupper" ;;
239 dirent.h)
240 required_list="closedir opendir readdir rewinddir" ;;
241 errno.h)
242 extra_check_list="errno" ;;
243 curses.h)
244 required_list="box delwin endwin getcurx getcury initscr mvcur mvwprintw mvwscanw newwin overlay overwrite scroll subwin touchwin waddstr wclear wclrtobot wclrtoeol waddch wdelch wdeleteln werase wgetch wgetstr winsch winsertln wmove wprintw wrefresh wscanw wstandend wstandout" ;;
245 fcntl.h)
246 required_list="creat fcntl open" ;;
247 grp.h)
248 #Maybe also "getgrent fgetgrent setgrent endgrent" */
249 required_list="getgrgid getgrnam" ;;
250 limit.h)
251 required_list= /* Lots of macros */ ;;
252 locale.h)
253 required_list="localeconv setlocale" ;;
254 math.h)
255 required_list="acos asin atan atan2 ceil cos cosh exp fabs floor fmod frexp ldexp log10 log modf pow sin sinh sqrt tan tanh"
256 extra_check_list="HUGE_VAL" ;;
257 pwd.h)
258 required_list="getpwnam getpwuid" ;;
259 setjmp.h)
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260 # Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.
261 required_list="longjmp setjmp" ;;
e9cd0b25 262 signal.h)
e9cd0b25 263 # Left out signal() - its prototype is too complex for us!
fc51af1a
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264 # Also left out "sigaction sigaddset sigdelset sigemptyset
265 # sigfillset sigismember sigpending sigprocmask sigsuspend"
266 # because these need sigset_t or struct sigaction.
267 # Most systems that provide them will also declare them.
268 required_list="kill raise" ;;
e9cd0b25 269 stdio.h)
328070bb
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270 # Omitted vfprintf, vprintf, vsprintf because it's hard
271 # to specify the right data type, and because not all systems
272 # have them.
273 required_list="clearerr fclose feof ferror fflush fgetc fgetpos fgets fopen fprintf fputc fputs fread freopen fscanf fseek fsetpos ftell fwrite getc getchar gets perror printf putc putchar puts remove rename rewind scanf setbuf setvbuf sprintf sscanf tmpfile tmpnam ungetc"
41b21cfc 274 if grep '[^_a-zA-Z0-9]_flsbuf' <$abs_source_file >/dev/null; then
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275 required_list="$required_list _flsbuf _filbuf"
276 fi
277 # Should perhaps also handle NULL, EOF, ... ?
278 ;;
279 stdlib.h)
280 required_list="$required_stdlib_h" ;;
281 string.h)
282 required_list="memchr memcmp memcpy memmove memset strcat strchr strcmp strcoll strcpy strcspn strerror strlen strncat strncmp" ;;
283# Should perhaps also add NULL and size_t
284 sys/stat.h)
285 required_list="chmod fstat mkdir mkfifo stat umask"
286 extra_check_list="S_ISDIR S_ISBLK S_ISCHR S_ISFIFO S_ISREG S_ISLNK S_IFDIR S_IFBLK S_IFCHR S_IFIFO S_IFREG S_IFLNK" ;;
287 sys/times.h)
288 required_list="times" ;;
289# "sys/types.h" add types (not in old g++-include)
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290 sys/utsname.h)
291 required_list="uname" ;;
292 sys/wait.h)
293 required_list="wait waitpid"
294 extra_check_list="WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED WSTOPSIG WTERMSIG WNOHANG WNOTRACED" ;;
295 tar.h)
296 required_list= ;;
297 termios.h)
298 required_list="cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain tcflow tcflush tcgetattr tcsendbreak tcsetattr" ;;
299 time.h)
300 required_list="asctime clock ctime difftime gmtime localtime mktime strftime time tzset" ;;
301 unistd.h)
302 required_list="$required_unistd_h" ;;
303 esac
304 rm -f fixtmp.c fixtmp.i
305 echo "#include <${rel_source_file}>" >fixtmp.c
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306 for macro in ${required_list} ${extra_check_list}
307 do
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308 echo "#ifdef ${macro}" >>fixtmp.c
309 echo "__DEFINED_MACRO_${macro};" >>fixtmp.c
310 echo "#endif" >>fixtmp.c
7afe1b4d 311 done
e9cd0b25 312 if ${CPP} -D__STDC__ -D__cplusplus -D_POSIX_SOURCE $include_path fixtmp.c >fixtmp.i 2>/dev/null
7afe1b4d 313 then
aab7bd19 314 $original_dir/fix-header $rel_source_file $abs_source_file $abs_target_file "$required_list" <fixtmp.i
7afe1b4d 315 else
e9cd0b25 316 echo "${progname}: cpp could not parse ${abs_source_file} (ignored)"
7afe1b4d 317 fi
e9cd0b25 318 echo "${rel_source_file}" >>fixproto.list
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319 fi
320 done
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321 rm -f fixtmp.c fixtmp.i
322 done
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323 # check for broken assert.h that needs stdio.h
324 if test -f $abs_source_dir/assert.h -a \! -f $abs_target_dir/assert.h \
325 && grep 'stderr' $abs_source_dir/assert.h >/dev/null
326 then
327 if grep 'include.*stdio.h' $abs_source_dir/assert.h >/dev/null
328 then true
329 else
330 echo 'Fixing broken assert.h (needs stdio.h)'
331 cat $abs_source_dir/assert.h >$abs_target_dir/assert.h
332 echo '#include <stdio.h>' >>$abs_target_dir/assert.h
333 fi
334 fi
335 done_dirs="$done_dir $rel_source_dir"
d7943819 336done
7afe1b4d 337
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338# This might be more cleanly moved into the main loop, by adding
339# a <dummy> source directory at the end. FIXME!
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340for rel_source_file in unistd.h stdlib.h
341do
e9cd0b25 342 if grep "$rel_source_file" fixproto.list >/dev/null
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343 then true
344 else
345 echo Adding missing $rel_source_file
e9cd0b25 346 rel_source_ident=`echo $rel_source_file | tr ./ __`
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347 required_list=`eval echo '${required_'${rel_source_ident}'-}'`
348 cat >tmp.h <<EOF
349#ifndef ${rel_source_ident}
350#define ${rel_source_ident}
351#endif
352EOF
aab7bd19 353 $original_dir/fix-header $rel_source_file tmp.h $abs_target_dir/$rel_source_file "$required_list" </dev/null
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354 rm tmp.h
355 fi
356done
357exit 0
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