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 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 #
  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."
  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.
  37 #       The fix-header program analyzes the scan-decls output,
  38 #       together with the original include file, and writes a "fixed"
  39 #       include file, if needed.
  40 #
  41 #       The comment at the beginning of fix-header.c lists specifically
  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
  56 progname=$0
  57 progname=`basename $progname`
  58 original_dir=`pwd`
  59 FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
  60 DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
  61
  62 if [ `echo $1 | wc -w` = 0 ] ; then
  63   echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
  64   exit 1
  65 fi
  66
  67 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/stat.h sys/times.h sys/resource.h sys/utsname.h sys/wait.h tar.h termios.h time.h unistd.h"
  68
  69 rel_target_dir=$1
  70 # All files in $src_dir_all (normally same as $rel_target_dir) are
  71 # processed.
  72 src_dir_all=$2
  73 # In $src_dir_std (normally same as /usr/include), only the
  74 # "standard" ANSI/POSIX files listed in $std_files are processed.
  75 src_dir_std=$3
  76
  77 if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
  78   abs_target_dir=$original_dir/$rel_target_dir
  79 else
  80   abs_target_dir=$rel_target_dir
  81 fi
  82
  83 # Determine whether this system has symbolic links.
  84 if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
  85   rm -f $rel_target_dir/ShouldNotExist
  86   LINKS=true
  87 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
  88   rm -f /tmp/ShouldNotExist
  89   LINKS=true
  90 else
  91   LINKS=false
  92 fi
  93
  94 if [ \! -d $abs_target_dir ] ; then
  95   echo $progname\: creating directory $rel_target_dir
  96   mkdir $abs_target_dir
  97 fi
  98
  99 echo $progname\: populating \`$rel_target_dir\'
 100
 101 include_path=""
 102
 103 if [ `echo $* | wc -w` != 0 ] ; then
 104   for rel_source_dir in $src_dir_all $src_dir_std; do
 105     if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
 106       abs_source_dir=$original_dir/$rel_source_dir
 107     else
 108       abs_source_dir=$rel_source_dir
 109     fi
 110     include_path="$include_path -I$abs_source_dir"
 111   done
 112 fi
 113
 114 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"
 115 # "div ldiv", - ignored because these depend on div_t, ldiv_t
 116 # ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
 117 # Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 118 # Should perhaps also add NULL
 119 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"
 120
 121 done_dirs=""
 122 echo "" >fixproto.list
 123
 124 for code in ALL STD ; do
 125
 126   subdirs="."
 127
 128   case $code in
 129     ALL)
 130       rel_source_dir=$src_dir_all
 131
 132       dirs="."
 133       levels=2
 134       while $LINKS && test -n "$dirs" -a $levels -gt 0
 135       do
 136         levels=`expr $levels - 1`
 137         newdirs=
 138         for d in $dirs ; do
 139           # Find all directories under $d, relative to $d, excluding $d itself.
 140           # Assume directory names ending in CC or containing ++ are
 141           # for C++, so skip those.
 142           subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
 143                    sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
 144                      -e '/CC$/d' -e '/\+\+/d'`
 145           links=
 146           links=`cd $rel_source_dir; find $d/. -type l -print | \
 147                        sed -e "s|$d/./|$d/|" -e 's|^\./||'`
 148           for link in $links --dummy-- ; do
 149             test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
 150           done
 151         done
 152         dirs="$newdirs"
 153         subdirs="$subdirs $newdirs"
 154       done
 155       ;;
 156     STD)
 157       rel_source_dir=$src_dir_std
 158       ;;
 159   esac
 160
 161   if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
 162     abs_source_dir=$original_dir/$rel_source_dir
 163   else
 164     abs_source_dir=$rel_source_dir
 165   fi
 166
 167   if [ \! -d $abs_source_dir ] ; then
 168     echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
 169     continue
 170   fi
 171
 172   for rel_source_subdir in $subdirs; do
 173
 174       abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
 175       if [ \! -d $abs_target_subdir ] ; then
 176         mkdir $abs_target_subdir
 177       fi
 178       # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
 179       rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
 180
 181       case $code in
 182         ALL)
 183           # The 'sed' is in case the *.h matches nothing, which yields "*.h"
 184           # which would then get re-globbed in the current directory.  Sigh.
 185           rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
 186           ;;
 187
 188         STD)
 189           files_to_check="$std_files"
 190           rel_source_files=""
 191
 192           # Also process files #included by the $std_files.
 193           while [ -n "${files_to_check}" ]
 194           do
 195             new_files_to_check=""
 196             for file in $files_to_check ; do
 197               xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
 198               # Create the dir where this file will go when fixed.
 199               xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
 200               if [ \! -d $abs_target_subdir/$xxdir ] ; then
 201                 mkdir $abs_target_subdir/$xxdir
 202               fi
 203               # Just in case we have edited out a symbolic link
 204               if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
 205                 file=$xxfile
 206               fi
 207               case " $rel_source_files " in
 208                 *" ${file} "*)
 209                   # Already seen $file; nothing to do
 210                   ;;
 211                 *)
 212                   if test -f $src_dir_std/$file ; then
 213                     rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
 214                     # For #include "foo.h", that might be either "foo.h"
 215                     # or "${rel_dir}foo.h (or something bogus).
 216                     new_files_to_check="$new_files_to_check "`sed -n \
 217                         -e 's@  @ @g' \
 218                         -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
 219                         's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
 220                         <$src_dir_std/$file`
 221                     rel_source_files="$rel_source_files $file"
 222                   fi
 223                   ;;
 224               esac
 225             done
 226             files_to_check="$new_files_to_check"
 227           done
 228           rel_source_files="$rel_source_files"
 229           ;;
 230       esac
 231
 232       for filename in $rel_source_files ; do
 233         rel_source_file=${rel_source_prefix}${filename}
 234         abs_source_file=$abs_source_dir/$rel_source_file
 235         abs_target_file=$abs_target_dir/$rel_source_file
 236
 237         if test "$filename" = 'NONE' ; then
 238           echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
 239         # If target file exists, check if was written while processing one
 240         # of the earlier source directories;  if so ignore it.
 241         elif test -f $abs_target_file -a -n "$done_dirs" \
 242           && grep "$rel_source_file" fixproto.list >/dev/null
 243         then true
 244         else
 245           $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
 246           echo "${rel_source_file}" >>fixproto.list
 247         fi
 248       done
 249     done
 250     done_dirs="$done_dir $rel_source_dir"
 251 done
 252
 253 # This might be more cleanly moved into the main loop, by adding
 254 # a <dummy> source directory at the end.  FIXME!
 255 for rel_source_file in unistd.h stdlib.h
 256 do
 257   if grep "$rel_source_file" fixproto.list >/dev/null
 258   then true
 259   else
 260     echo Adding missing $rel_source_file
 261     rel_source_ident=`echo $rel_source_file | tr ./ __`
 262     required_list=`eval echo '${required_'${rel_source_ident}'-}'`
 263     cat >tmp.h <<EOF
 264 #ifndef ${rel_source_ident}
 265 #define ${rel_source_ident}
 266 #endif
 267 EOF
 268     ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
 269     rm tmp.h
 270   fi
 271 done
 272 exit 0