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 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 $progname`
  58 original_dir=`pwd`
  59 CPP=${CPP-./cpp}
  60
  61 if [ `echo $1 | wc -w` = 0 ] ; then
  62   echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
  63   exit 1
  64 fi
  65
  66 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"
  67
  68 rel_target_dir=$1
  69 # All files in $src_dir_all (normally same as $rel_target_dir) are
  70 # processed.
  71 src_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.
  74 src_dir_std=$3
  75
  76 if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
  77   abs_target_dir=$original_dir/$rel_target_dir
  78 else
  79   abs_target_dir=$rel_target_dir
  80 fi
  81
  82 # Determine whether this system has symbolic links.
  83 if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
  84   rm -f $rel_target_dir/ShouldNotExist
  85   LINKS=true
  86 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
  87   rm -f /tmp/ShouldNotExist
  88   LINKS=true
  89 else
  90   LINKS=false
  91 fi
  92
  93 if [ \! -d $abs_target_dir ] ; then
  94   echo $progname\: creating directory $rel_target_dir
  95   mkdir $abs_target_dir
  96 fi
  97
  98 echo $progname\: populating \`$rel_target_dir\'
  99
 100 include_path=""
 101
 102 if [ `echo $* | wc -w` != 0 ] ; then
 103   for rel_source_dir in $src_dir_all $src_dir_std; do
 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
 111 fi
 112
 113 required_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
 117 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 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
 119 done_dirs=""
 120 echo "" >fixproto.list
 121
 122 for code in ALL STD ; do
 123
 124   subdirs="."
 125
 126   case $code in
 127     ALL)
 128       rel_source_dir=$src_dir_all
 129
 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 $d itself.
 138           # Assume directory names ending in CC or containing ++ are
 139           # for C++, so skip those.
 140           subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
 141                    sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
 142                      -e '/CC$/d' -e '/\+\+/d'`
 143           links=
 144           links=`cd $rel_source_dir; find $d/. -type l -print | \
 145                        sed -e "s|$d/./|$d/|" -e 's|^\./||'`
 146           for link in $links --dummy-- ; do
 147             test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
 148           done
 149         done
 150         dirs="$newdirs"
 151         subdirs="$subdirs $newdirs"
 152       done
 153       ;;
 154     STD)
 155       rel_source_dir=$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 $subdirs; do
 171
 172       abs_target_subdir=${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|^./||'`
 178
 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               xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
 196               # Just in case we have edited out a symbolic link
 197               if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
 198                 file=$xxfile
 199               fi
 200               case " $rel_source_files " in
 201                 *" ${file} "*)
 202                   # Already seen $file; nothing to do
 203                   ;;
 204                 *)
 205                   if test -f $src_dir_std/$file ; then
 206                     rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
 207                     # For #include "foo.h", that might be either "foo.h"
 208                     # or "${rel_dir}foo.h (or something bogus).
 209                     new_files_to_check="$new_files_to_check "`sed -n \
 210                         -e 's@  @ @g' \
 211                         -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
 212                         's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
 213                         <$src_dir_std/$file`
 214                     rel_source_files="$rel_source_files $file"
 215                   fi
 216                   ;;
 217               esac
 218             done
 219             files_to_check="$new_files_to_check"
 220           done
 221           rel_source_files="$rel_source_files"
 222           ;;
 223       esac
 224
 225       for filename in $rel_source_files ; do
 226         rel_source_file=${rel_source_prefix}${filename}
 227         abs_source_file=$abs_source_dir/$rel_source_file
 228         abs_target_file=$abs_target_dir/$rel_source_file
 229
 230         if test "$filename" = 'NONE' ; then
 231           echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
 232         # If target file exists, check if was written while processing one
 233         # of the earlier source directories;  if so ignore it.
 234         elif test -f $abs_target_file -a -n "$done_dirs" \
 235           && grep "$rel_source_file" fixproto.list >/dev/null
 236         then true
 237         else
 238           # echo doing $rel_source_file from $abs_source_dir
 239           required_list=
 240           extra_check_list=
 241           case $rel_source_file in
 242             ctype.h)
 243               required_list="isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit tolower toupper" ;;
 244             dirent.h)
 245               required_list="closedir opendir readdir rewinddir" ;;
 246             errno.h)
 247               extra_check_list="errno" ;;
 248             curses.h)
 249               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" ;;
 250             fcntl.h)
 251               required_list="creat fcntl open" ;;
 252             grp.h)
 253               #Maybe also "getgrent fgetgrent setgrent endgrent" */
 254               required_list="getgrgid getgrnam" ;;
 255             limit.h)
 256               required_list= /* Lots of macros */ ;;
 257             locale.h)
 258               required_list="localeconv setlocale" ;;
 259             math.h)
 260               required_list="acos asin atan atan2 ceil cos cosh exp fabs floor fmod frexp ldexp log10 log modf pow sin sinh sqrt tan tanh"
 261               extra_check_list="HUGE_VAL" ;;
 262             pwd.h)
 263               required_list="getpwnam getpwuid" ;;
 264             setjmp.h)
 265               # Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.
 266               required_list="longjmp setjmp" ;;
 267             signal.h)
 268               # Left out signal() - its prototype is too complex for us!
 269               # Also left out "sigaction sigaddset sigdelset sigemptyset
 270               # sigfillset sigismember sigpending sigprocmask sigsuspend"
 271               # because these need sigset_t or struct sigaction.
 272               # Most systems that provide them will also declare them.
 273               required_list="kill raise" ;;
 274             stdio.h)
 275               # Omitted vfprintf, vprintf, vsprintf because it's hard
 276               # to specify the right data type, and because not all systems
 277               # have them.
 278               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"
 279               if grep '[^_a-zA-Z0-9]_flsbuf' <$abs_source_file >/dev/null; then
 280                 required_list="$required_list _flsbuf _filbuf"
 281               fi
 282               # Should perhaps also handle NULL, EOF, ... ?
 283               ;;
 284             stdlib.h)
 285               required_list="$required_stdlib_h" ;;
 286             string.h)
 287               required_list="memchr memcmp memcpy memmove memset strcat strchr strcmp strcoll strcpy strcspn strerror strlen strncat strncmp" ;;
 288 # Should perhaps also add NULL and size_t
 289             sys/stat.h)
 290               required_list="chmod fstat mkdir mkfifo stat umask"
 291               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" ;;
 292             sys/times.h)
 293               required_list="times" ;;
 294 # "sys/types.h" add types (not in old g++-include)
 295             sys/utsname.h)
 296               required_list="uname" ;;
 297             sys/wait.h)
 298               required_list="wait waitpid"
 299               extra_check_list="WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED WSTOPSIG WTERMSIG WNOHANG WNOTRACED" ;;
 300             tar.h)
 301               required_list=  ;;
 302             termios.h)
 303               required_list="cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain tcflow tcflush tcgetattr tcsendbreak tcsetattr" ;;
 304             time.h)
 305               required_list="asctime clock ctime difftime gmtime localtime mktime strftime time tzset" ;;
 306             unistd.h)
 307               required_list="$required_unistd_h" ;;
 308           esac
 309           rm -f fixtmp.c fixtmp.i
 310           echo "#include <${rel_source_file}>" >fixtmp.c
 311           for macro in ${required_list} ${extra_check_list}
 312           do
 313             echo "#ifdef ${macro}" >>fixtmp.c
 314             echo "__DEFINED_MACRO_${macro};" >>fixtmp.c
 315             echo "#endif" >>fixtmp.c
 316           done
 317           if ${CPP} -D__STDC__ -D__cplusplus -D_POSIX_SOURCE $include_path fixtmp.c >fixtmp.i 2>/dev/null
 318           then
 319            $original_dir/fix-header $rel_source_file $abs_source_file $abs_target_file "$required_list" <fixtmp.i
 320           else
 321             echo "${progname}: cpp could not parse ${abs_source_file} (ignored)"
 322           fi
 323           echo "${rel_source_file}" >>fixproto.list
 324         fi
 325       done
 326       rm -f fixtmp.c fixtmp.i
 327     done
 328     # check for broken assert.h that needs stdio.h
 329     if test -f $abs_source_dir/assert.h -a \! -f $abs_target_dir/assert.h \
 330       && grep 'stderr' $abs_source_dir/assert.h >/dev/null
 331     then
 332       if grep 'include.*stdio.h' $abs_source_dir/assert.h >/dev/null
 333       then true
 334       else
 335         echo 'Fixing broken assert.h (needs stdio.h)'
 336         cat $abs_source_dir/assert.h >$abs_target_dir/assert.h
 337         echo '#include <stdio.h>' >>$abs_target_dir/assert.h
 338       fi
 339     fi
 340     done_dirs="$done_dir $rel_source_dir"
 341 done
 342
 343 # This might be more cleanly moved into the main loop, by adding
 344 # a <dummy> source directory at the end.  FIXME!
 345 for rel_source_file in unistd.h stdlib.h
 346 do
 347   if grep "$rel_source_file" fixproto.list >/dev/null
 348   then true
 349   else
 350     echo Adding missing $rel_source_file
 351     rel_source_ident=`echo $rel_source_file | tr ./ __`
 352     required_list=`eval echo '${required_'${rel_source_ident}'-}'`
 353     cat >tmp.h <<EOF
 354 #ifndef ${rel_source_ident}
 355 #define ${rel_source_ident}
 356 #endif
 357 EOF
 358     $original_dir/fix-header $rel_source_file tmp.h $abs_target_dir/$rel_source_file "$required_list" </dev/null
 359     rm tmp.h
 360   fi
 361 done
 362 exit 0