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 $progname`
  58 original_dir=`pwd`
  59 CPP=${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 # Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 117 # Should perhaps also add NULL
 118 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 getpgrp getpid getppid getuid isatty link lseek pathconf pause pipe read rmdir setgid setpgid setsid setuid sleep sysconf tcgetpgrp tcsetpgrp ttyname unlink write"
 119
 120 done_dirs=""
 121 echo "" >fixproto.list
 122
 123 for code in ALL STD ; do
 124
 125   subdirs="."
 126
 127   case $code in
 128     ALL)
 129       rel_source_dir=$src_dir_all
 130
 131       dirs="."
 132       levels=2
 133       while $LINKS && test -n "$dirs" -a $levels -gt 0
 134       do
 135         levels=`expr $levels - 1`
 136         newdirs=
 137         for d in $dirs ; do
 138           # Find all directories under $d, relative to $d, excluding $d itself.
 139           # Assume directory names ending in CC or containing ++ are
 140           # for C++, so skip those.
 141           subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
 142                    sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
 143                      -e '/CC$/d' -e '/\+\+/d'`
 144           links=
 145           links=`cd $rel_source_dir; find $d/. -type l -print | \
 146                        sed -e "s|$d/./|$d/|" -e 's|^\./||'`
 147           for link in $links --dummy-- ; do
 148             test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
 149           done
 150         done
 151         dirs="$newdirs"
 152         subdirs="$subdirs $newdirs"
 153       done
 154       ;;
 155     STD)
 156       rel_source_dir=$src_dir_std
 157       ;;
 158   esac
 159
 160   if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
 161     abs_source_dir=$original_dir/$rel_source_dir
 162   else
 163     abs_source_dir=$rel_source_dir
 164   fi
 165
 166   if [ \! -d $abs_source_dir ] ; then
 167     echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
 168     continue
 169   fi
 170
 171   for rel_source_subdir in $subdirs; do
 172
 173       abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
 174       if [ \! -d $abs_target_subdir ] ; then
 175         mkdir $abs_target_subdir
 176       fi
 177       # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
 178       rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
 179
 180       case $code in
 181         ALL)
 182           # The 'sed' is in case the *.h matches nothing, which yields "*.h"
 183           # which would then get re-globbed in the current directory.  Sigh.
 184           rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
 185           ;;
 186
 187         STD)
 188           files_to_check="$std_files"
 189           rel_source_files=""
 190
 191           # Also process files #included by the $std_files.
 192           while [ -n "${files_to_check}" ]
 193           do
 194             new_files_to_check=""
 195             for file in $files_to_check ; do
 196               xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
 197               # Create the dir where this file will go when fixed.
 198               xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
 199               if [ \! -d $abs_target_subdir/$xxdir ] ; then
 200                 mkdir $abs_target_subdir/$xxdir
 201               fi
 202               # Just in case we have edited out a symbolic link
 203               if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
 204                 file=$xxfile
 205               fi
 206               case " $rel_source_files " in
 207                 *" ${file} "*)
 208                   # Already seen $file; nothing to do
 209                   ;;
 210                 *)
 211                   if test -f $src_dir_std/$file ; then
 212                     rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
 213                     # For #include "foo.h", that might be either "foo.h"
 214                     # or "${rel_dir}foo.h (or something bogus).
 215                     new_files_to_check="$new_files_to_check "`sed -n \
 216                         -e 's@  @ @g' \
 217                         -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
 218                         's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
 219                         <$src_dir_std/$file`
 220                     rel_source_files="$rel_source_files $file"
 221                   fi
 222                   ;;
 223               esac
 224             done
 225             files_to_check="$new_files_to_check"
 226           done
 227           rel_source_files="$rel_source_files"
 228           ;;
 229       esac
 230
 231       for filename in $rel_source_files ; do
 232         rel_source_file=${rel_source_prefix}${filename}
 233         abs_source_file=$abs_source_dir/$rel_source_file
 234         abs_target_file=$abs_target_dir/$rel_source_file
 235
 236         if test "$filename" = 'NONE' ; then
 237           echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
 238         # If target file exists, check if was written while processing one
 239         # of the earlier source directories;  if so ignore it.
 240         elif test -f $abs_target_file -a -n "$done_dirs" \
 241           && grep "$rel_source_file" fixproto.list >/dev/null
 242         then true
 243         else
 244           # echo doing $rel_source_file from $abs_source_dir
 245           required_list=
 246           extra_check_list=
 247           case $rel_source_file in
 248             ctype.h)
 249               required_list="isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit tolower toupper" ;;
 250             dirent.h)
 251               required_list="closedir opendir readdir rewinddir" ;;
 252             errno.h)
 253               extra_check_list="errno" ;;
 254             curses.h)
 255               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" ;;
 256             fcntl.h)
 257               required_list="creat fcntl open" ;;
 258             grp.h)
 259               #Maybe also "getgrent fgetgrent setgrent endgrent" */
 260               required_list="getgrgid getgrnam" ;;
 261             limit.h)
 262               required_list= /* Lots of macros */ ;;
 263             locale.h)
 264               required_list="localeconv setlocale" ;;
 265             math.h)
 266               required_list="acos asin atan atan2 ceil cos cosh exp fabs floor fmod frexp ldexp log10 log modf pow sin sinh sqrt tan tanh"
 267               extra_check_list="HUGE_VAL" ;;
 268             pwd.h)
 269               required_list="getpwnam getpwuid" ;;
 270             setjmp.h)
 271               # Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.
 272               required_list="longjmp setjmp" ;;
 273             signal.h)
 274               # Left out signal() - its prototype is too complex for us!
 275               # Also left out "sigaction sigaddset sigdelset sigemptyset
 276               # sigfillset sigismember sigpending sigprocmask sigsuspend"
 277               # because these need sigset_t or struct sigaction.
 278               # Most systems that provide them will also declare them.
 279               required_list="kill raise" ;;
 280             stdio.h)
 281               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 vprintf vsprintf vfprintf tmpfile tmpnam ungetc"
 282               if grep '[^_a-zA-Z0-9]_flsbuf' <$abs_source_file >/dev/null; then
 283                 required_list="$required_list _flsbuf _filbuf"
 284               fi
 285               # Should perhaps also handle NULL, EOF, ... ?
 286               ;;
 287             stdlib.h)
 288               required_list="$required_stdlib_h" ;;
 289             string.h)
 290               required_list="memchr memcmp memcpy memmove memset strcat strchr strcmp strcoll strcpy strcspn strerror strlen strncat strncmp" ;;
 291 # Should perhaps also add NULL and size_t
 292             sys/stat.h)
 293               required_list="chmod fstat mkdir mkfifo stat lstat umask"
 294               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" ;;
 295             sys/times.h)
 296               required_list="times" ;;
 297 # "sys/types.h" add types (not in old g++-include)
 298             sys/utsname.h)
 299               required_list="uname" ;;
 300             sys/wait.h)
 301               required_list="wait waitpid"
 302               extra_check_list="WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED WSTOPSIG WTERMSIG WNOHANG WNOTRACED" ;;
 303             tar.h)
 304               required_list=  ;;
 305             termios.h)
 306               required_list="cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain tcflow tcflush tcgetattr tcsendbreak tcsetattr" ;;
 307             time.h)
 308               required_list="asctime clock ctime difftime gmtime localtime mktime strftime time tzset" ;;
 309             unistd.h)
 310               required_list="$required_unistd_h" ;;
 311           esac
 312           rm -f fixtmp.c fixtmp.i
 313           echo "#include <${rel_source_file}>" >fixtmp.c
 314           for macro in ${required_list} ${extra_check_list}
 315           do
 316             echo "#ifdef ${macro}" >>fixtmp.c
 317             echo "__DEFINED_MACRO_${macro};" >>fixtmp.c
 318             echo "#endif" >>fixtmp.c
 319           done
 320           if ${CPP} -D__STDC__ -D__cplusplus -D_POSIX_SOURCE $include_path fixtmp.c >fixtmp.i 2>/dev/null
 321           then
 322            $original_dir/fix-header $rel_source_file $abs_source_file $abs_target_file "$required_list" <fixtmp.i
 323           else
 324             echo "${progname}: cpp could not parse ${abs_source_file} (ignored)"
 325           fi
 326           echo "${rel_source_file}" >>fixproto.list
 327         fi
 328       done
 329       rm -f fixtmp.c fixtmp.i
 330     done
 331     # check for broken assert.h that needs stdio.h
 332     if test -f $abs_source_dir/assert.h -a \! -f $abs_target_dir/assert.h; then
 333       if grep 'stderr' $abs_source_dir/assert.h >/dev/null ; then
 334         if grep 'include.*stdio.h' $abs_source_dir/assert.h >/dev/null ; then
 335           true
 336         else
 337           echo 'Fixing broken assert.h (needs stdio.h)'
 338           cat $abs_source_dir/assert.h >$abs_target_dir/assert.h
 339           echo '#include <stdio.h>' >>$abs_target_dir/assert.h
 340         fi
 341       fi
 342       if grep 'exit *(' $abs_source_dir/assert.h >/dev/null ||
 343          grep 'abort *(' $abs_source_dir/assert.h >/dev/null ; then
 344         if grep 'include.*stdlib.h' $abs_source_dir/assert.h >/dev/null ; then
 345           true
 346         else
 347           echo 'Fixing broken assert.h (needs stdlib.h)'
 348           if test ! -f $abs_target_dir/assert.h ; then
 349             cat $abs_source_dir/assert.h >$abs_target_dir/assert.h
 350           fi
 351           echo '#include <stdlib.h>' >>$abs_target_dir/assert.h
 352         fi
 353       fi
 354     fi
 355     done_dirs="$done_dir $rel_source_dir"
 356 done
 357
 358 # This might be more cleanly moved into the main loop, by adding
 359 # a <dummy> source directory at the end.  FIXME!
 360 for rel_source_file in unistd.h stdlib.h
 361 do
 362   if grep "$rel_source_file" fixproto.list >/dev/null
 363   then true
 364   else
 365     echo Adding missing $rel_source_file
 366     rel_source_ident=`echo $rel_source_file | tr ./ __`
 367     required_list=`eval echo '${required_'${rel_source_ident}'-}'`
 368     cat >tmp.h <<EOF
 369 #ifndef ${rel_source_ident}
 370 #define ${rel_source_ident}
 371 #endif
 372 EOF
 373     $original_dir/fix-header $rel_source_file tmp.h $abs_target_dir/$rel_source_file "$required_list" </dev/null
 374     rm tmp.h
 375   fi
 376 done
 377 exit 0