gcc/fixproto

   1 #!/bin/sh
   2 #
   3 # SYNOPSIS
   4 #       fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
   5 #
   6 # COPYRIGHT
   7 #       Copyright (C) 1993, 1994, 1997, 1998 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
  57 dirname=`echo "$0" | sed 's,^[^/]*$,.,;s,//*[^/]*$,,'`
  58 progname=`echo "$0" | sed 's,.*/,,'`
  59 original_dir=`pwd`
  60 FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
  61 DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
  62
  63 if mkdir -p . 2> /dev/null; then
  64   # Great, mkdir accepts -p
  65   mkinstalldirs="mkdir -p"
  66 else
  67   # We expect mkinstalldirs to be passed in the environment.
  68   # If it is not, assume it is in the directory that contains this script.
  69   mkinstalldirs=${mkinstalldirs-"/bin/sh $dirname/mkinstalldirs"}
  70   if $mkinstalldirs . 2> /dev/null; then
  71     :
  72   else
  73     # But, in case of failure, fallback to plain mkdir, and hope it works
  74     mkinstalldirs=mkdir
  75   fi
  76 fi
  77
  78 if [ `echo $1 | wc -w` = 0 ] ; then
  79   echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
  80   exit 1
  81 fi
  82
  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"
  84
  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
  92
  93 if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
  94   abs_target_dir=$original_dir/$rel_target_dir
  95 else
  96   abs_target_dir=$rel_target_dir
  97 fi
  98
  99 # Determine whether this system has symbolic links.
 100 if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
 101   rm -f $rel_target_dir/ShouldNotExist
 102   LINKS=true
 103 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
 104   rm -f /tmp/ShouldNotExist
 105   LINKS=true
 106 else
 107   LINKS=false
 108 fi
 109
 110 if [ \! -d $abs_target_dir ] ; then
 111   echo $progname\: creating directory $rel_target_dir
 112   $mkinstalldirs $abs_target_dir
 113 fi
 114
 115 echo $progname\: populating \`$rel_target_dir\'
 116
 117 include_path=""
 118
 119 if [ `echo $* | wc -w` != 0 ] ; then
 120   for rel_source_dir in $src_dir_all $src_dir_std; do
 121     if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
 122       abs_source_dir=$original_dir/$rel_source_dir
 123     else
 124       abs_source_dir=$rel_source_dir
 125     fi
 126     include_path="$include_path -I$abs_source_dir"
 127   done
 128 fi
 129
 130 required_stdlib_h="abort abs atexit atof atoi atol bsearch calloc exit free getenv labs malloc putenv qsort rand realloc srand strtod strtol strtoul system"
 131 # "div ldiv", - ignored because these depend on div_t, ldiv_t
 132 # ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
 133 # Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 134 # Should perhaps also add NULL
 135 required_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"
 136
 137 done_dirs=""
 138 subdirs_made=""
 139 echo "" >fixproto.list
 140
 141 for code in ALL STD ; do
 142
 143   subdirs="."
 144
 145   case $code in
 146     ALL)
 147       rel_source_dir=$src_dir_all
 148
 149       dirs="."
 150       levels=2
 151       while $LINKS && test -n "$dirs" -a $levels -gt 0
 152       do
 153         levels=`expr $levels - 1`
 154         newdirs=
 155         for d in $dirs ; do
 156           # Find all directories under $d, relative to $d, excluding $d itself.
 157           # Assume directory names ending in CC or containing ++ are
 158           # for C++, so skip those.
 159           subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
 160                    sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
 161                      -e '/CC$/d' -e '/[+][+]/d'`
 162           links=
 163           links=`cd $rel_source_dir; find $d/. -type l -print | \
 164                        sed -e "s|$d/./|$d/|" -e 's|^\./||'`
 165           for link in $links --dummy-- ; do
 166             test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
 167           done
 168         done
 169         dirs="$newdirs"
 170         subdirs="$subdirs $newdirs"
 171       done
 172       ;;
 173     STD)
 174       rel_source_dir=$src_dir_std
 175       ;;
 176   esac
 177
 178   if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
 179     abs_source_dir=$original_dir/$rel_source_dir
 180   else
 181     abs_source_dir=$rel_source_dir
 182   fi
 183
 184   if [ \! -d $abs_source_dir ] ; then
 185     echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
 186     continue
 187   fi
 188
 189   for rel_source_subdir in $subdirs; do
 190
 191       abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
 192       if [ \! -d $abs_target_subdir ] ; then
 193         if $mkinstalldirs $abs_target_subdir ; then
 194           subdirs_made="$abs_target_subdir $subdirs_made"
 195         fi
 196       fi
 197       # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
 198       rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
 199
 200       case $code in
 201         ALL)
 202           # The 'sed' is in case the *.h matches nothing, which yields "*.h"
 203           # which would then get re-globbed in the current directory.  Sigh.
 204           rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
 205           ;;
 206
 207         STD)
 208           files_to_check="$std_files"
 209           rel_source_files=""
 210
 211           # Also process files #included by the $std_files.
 212           while [ -n "${files_to_check}" ]
 213           do
 214             new_files_to_check=""
 215             for file in $files_to_check ; do
 216               xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
 217               # Create the dir where this file will go when fixed.
 218               xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
 219               if [ \! -d $abs_target_subdir/$xxdir ] ; then
 220                 if $mkinstalldirs $abs_target_subdir/$xxdir ; then
 221                   subdirs_made="$abs_target_subdir/$xxdir $subdirs_made"
 222                 fi
 223               fi
 224               # Just in case we have edited out a symbolic link
 225               if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
 226                 file=$xxfile
 227               fi
 228               case " $rel_source_files " in
 229                 *" ${file} "*)
 230                   # Already seen $file; nothing to do
 231                   ;;
 232                 *)
 233                   if test -f $src_dir_std/$file ; then
 234                     rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
 235                     # For #include "foo.h", that might be either "foo.h"
 236                     # or "${rel_dir}foo.h (or something bogus).
 237                     new_files_to_check="$new_files_to_check "`sed -n \
 238                         -e 's@  @ @g' \
 239                         -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
 240                         's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
 241                         <$src_dir_std/$file`
 242                     rel_source_files="$rel_source_files $file"
 243                   fi
 244                   ;;
 245               esac
 246             done
 247             files_to_check="$new_files_to_check"
 248           done
 249           rel_source_files="$rel_source_files"
 250           ;;
 251       esac
 252
 253       for filename in $rel_source_files ; do
 254         rel_source_file=${rel_source_prefix}${filename}
 255         abs_source_file=$abs_source_dir/$rel_source_file
 256         abs_target_file=$abs_target_dir/$rel_source_file
 257
 258         if test "$filename" = 'NONE' ; then
 259           echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
 260         # If target file exists, check if was written while processing one
 261         # of the earlier source directories;  if so ignore it.
 262         elif test -f $abs_target_file -a -n "$done_dirs" \
 263           && grep "$rel_source_file" fixproto.list >/dev/null
 264         then true
 265         else
 266           $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
 267           echo "${rel_source_file}" >>fixproto.list
 268         fi
 269       done
 270     done
 271     done_dirs="$done_dir $rel_source_dir"
 272 done
 273
 274 # This might be more cleanly moved into the main loop, by adding
 275 # a <dummy> source directory at the end.  FIXME!
 276 for rel_source_file in unistd.h stdlib.h
 277 do
 278   if grep "$rel_source_file" fixproto.list >/dev/null
 279   then true
 280   else
 281     echo Adding missing $rel_source_file
 282     rel_source_ident=`echo $rel_source_file | tr ./ __`
 283     required_list=`eval echo '${required_'${rel_source_ident}'-}'`
 284     cat >tmp.h <<EOF
 285 #ifndef __${rel_source_ident}
 286 #define __${rel_source_ident}
 287 EOF
 288     if test $rel_source_file = stdlib.h
 289     then
 290       # Make sure it contains a definition of size_t.
 291       cat >>tmp.h <<EOF
 292
 293 #define __need_size_t
 294 #include <stddef.h>
 295 EOF
 296     fi
 297     cat >>tmp.h <<EOF
 298
 299 #endif /* __${rel_source_ident} */
 300 EOF
 301     ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
 302     rm tmp.h
 303   fi
 304 done
 305
 306 # Remove any directories that we made that are still empty.
 307 rmdir $subdirs_made 2>/dev/null
 308
 309 exit 0