source: trunk/third/gcc/fixproto @ 8834

Revision 8834, 9.0 KB checked in by ghudson, 28 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r8833, which included commits to RCS files with non-trunk default branches.
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1#!/bin/sh
2#
3# SYNOPSIS
4#       fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
5#
6# COPYRIGHT
7#       Copyright (C) 1993, 1994 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, 59 Temple Place - Suite 330,
23#       Boston, MA 02111-1307, USA.
24#
25# DESCRIPTION
26#       Adjunct script for GNU CC to populate a directory with ANSI,
27#       Posix.1, and C++ compatible header files.
28#
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.
34#
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.
41#
42#       The comment at the beginning of fix-header.c lists specifically
43#       what kind of changes are made.
44#
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.
52#
53# AUTHORS
54#       Ron Guilmette (rfg@netcom.com) (original idea and code)
55#       Per Bothner (bothner@cygnus.com) (major re-write)
56
57progname=$0
58progname=`basename $progname`
59original_dir=`pwd`
60FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
61DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
62
63if [ `echo $1 | wc -w` = 0 ] ; then
64  echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
65  exit 1
66fi
67
68std_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"
69
70rel_target_dir=$1
71# All files in $src_dir_all (normally same as $rel_target_dir) are
72# processed.
73src_dir_all=$2
74# In $src_dir_std (normally same as /usr/include), only the
75# "standard" ANSI/POSIX files listed in $std_files are processed.
76src_dir_std=$3
77
78if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
79  abs_target_dir=$original_dir/$rel_target_dir
80else
81  abs_target_dir=$rel_target_dir
82fi
83
84# Determine whether this system has symbolic links.
85if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
86  rm -f $rel_target_dir/ShouldNotExist
87  LINKS=true
88elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
89  rm -f /tmp/ShouldNotExist
90  LINKS=true
91else
92  LINKS=false
93fi
94
95if [ \! -d $abs_target_dir ] ; then
96  echo $progname\: creating directory $rel_target_dir
97  mkdir $abs_target_dir
98fi
99
100echo $progname\: populating \`$rel_target_dir\'
101
102include_path=""
103
104if [ `echo $* | wc -w` != 0 ] ; then
105  for rel_source_dir in $src_dir_all $src_dir_std; do
106    if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
107      abs_source_dir=$original_dir/$rel_source_dir
108    else
109      abs_source_dir=$rel_source_dir
110    fi
111    include_path="$include_path -I$abs_source_dir"
112  done
113fi
114
115required_stdlib_h="abort abs atexit atof atoi atol bsearch calloc exit free getenv labs malloc putenv qsort rand realloc srand strtod strtol strtoul system"
116# "div ldiv", - ignored because these depend on div_t, ldiv_t
117# ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
118# Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
119# Should perhaps also add NULL
120required_unistd_h="_exit access alarm chdir chown close ctermid cuserid dup dup2 execl execle execlp execv execve execvp fork fpathconf getcwd getegid geteuid getgid getlogin getopt getpgrp getpid getppid getuid isatty link lseek pathconf pause pipe read rmdir setgid setpgid setsid setuid sleep sysconf tcgetpgrp tcsetpgrp ttyname unlink write"
121
122done_dirs=""
123echo "" >fixproto.list
124
125for code in ALL STD ; do
126
127  subdirs="."
128
129  case $code in
130    ALL)
131      rel_source_dir=$src_dir_all
132
133      dirs="."
134      levels=2
135      while $LINKS && test -n "$dirs" -a $levels -gt 0
136      do
137        levels=`expr $levels - 1`
138        newdirs=
139        for d in $dirs ; do
140          # Find all directories under $d, relative to $d, excluding $d itself.
141          # Assume directory names ending in CC or containing ++ are
142          # for C++, so skip those.
143          subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
144                   sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
145                     -e '/CC$/d' -e '/\+\+/d'`
146          links=
147          links=`cd $rel_source_dir; find $d/. -type l -print | \
148                       sed -e "s|$d/./|$d/|" -e 's|^\./||'`
149          for link in $links --dummy-- ; do
150            test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
151          done
152        done
153        dirs="$newdirs"
154        subdirs="$subdirs $newdirs"
155      done
156      ;;
157    STD)
158      rel_source_dir=$src_dir_std
159      ;;
160  esac
161
162  if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
163    abs_source_dir=$original_dir/$rel_source_dir
164  else
165    abs_source_dir=$rel_source_dir
166  fi
167
168  if [ \! -d $abs_source_dir ] ; then
169    echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
170    continue
171  fi
172
173  for rel_source_subdir in $subdirs; do
174
175      abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
176      if [ \! -d $abs_target_subdir ] ; then
177        mkdir $abs_target_subdir
178      fi
179      # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
180      rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
181
182      case $code in
183        ALL)
184          # The 'sed' is in case the *.h matches nothing, which yields "*.h"
185          # which would then get re-globbed in the current directory.  Sigh.
186          rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
187          ;;
188
189        STD)
190          files_to_check="$std_files"
191          rel_source_files=""
192
193          # Also process files #included by the $std_files.
194          while [ -n "${files_to_check}" ]
195          do
196            new_files_to_check=""
197            for file in $files_to_check ; do
198              xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
199              # Create the dir where this file will go when fixed.
200              xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
201              if [ \! -d $abs_target_subdir/$xxdir ] ; then
202                mkdir $abs_target_subdir/$xxdir
203              fi
204              # Just in case we have edited out a symbolic link
205              if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
206                file=$xxfile
207              fi
208              case " $rel_source_files " in
209                *" ${file} "*)
210                  # Already seen $file; nothing to do
211                  ;;
212                *)
213                  if test -f $src_dir_std/$file ; then
214                    rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
215                    # For #include "foo.h", that might be either "foo.h"
216                    # or "${rel_dir}foo.h (or something bogus).
217                    new_files_to_check="$new_files_to_check "`sed -n \
218                        -e 's@  @ @g' \
219                        -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
220                        's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
221                        <$src_dir_std/$file`
222                    rel_source_files="$rel_source_files $file"
223                  fi
224                  ;;
225              esac
226            done
227            files_to_check="$new_files_to_check"
228          done
229          rel_source_files="$rel_source_files"
230          ;;
231      esac
232
233      for filename in $rel_source_files ; do
234        rel_source_file=${rel_source_prefix}${filename}
235        abs_source_file=$abs_source_dir/$rel_source_file
236        abs_target_file=$abs_target_dir/$rel_source_file
237
238        if test "$filename" = 'NONE' ; then
239          echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
240        # If target file exists, check if was written while processing one
241        # of the earlier source directories;  if so ignore it.
242        elif test -f $abs_target_file -a -n "$done_dirs" \
243          && grep "$rel_source_file" fixproto.list >/dev/null
244        then true
245        else
246          $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
247          echo "${rel_source_file}" >>fixproto.list
248        fi
249      done
250    done
251    done_dirs="$done_dir $rel_source_dir"
252done
253
254# This might be more cleanly moved into the main loop, by adding
255# a <dummy> source directory at the end.  FIXME!
256for rel_source_file in unistd.h stdlib.h
257do
258  if grep "$rel_source_file" fixproto.list >/dev/null
259  then true
260  else
261    echo Adding missing $rel_source_file
262    rel_source_ident=`echo $rel_source_file | tr ./ __`
263    required_list=`eval echo '${required_'${rel_source_ident}'-}'`
264    cat >tmp.h <<EOF
265#ifndef ${rel_source_ident}
266#define ${rel_source_ident}
267#endif
268EOF
269    ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
270    rm tmp.h
271  fi
272done
273exit 0
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