Annotation of gcc/fixproto, revision 1.1.1.2

1.1       root        1: #!/bin/sh
                      2: #
                      3: # SYNOPSIS
                      4: #      fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
                      5: #
                      6: # COPYRIGHT
1.1.1.2 ! root        7: #      Copyright (C) 1993, 1994 Free Software Foundation, Inc.
1.1       root        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 ([email protected]) (original idea and code)
                     54: #      Per Bothner ([email protected]) (major re-write)
                     55: 
                     56: progname=$0
                     57: progname=`basename $progname`
                     58: original_dir=`pwd`
                     59: CPP=${CPP-./cpp}
1.1.1.2 ! root       60: FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
        !            61: DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
1.1       root       62: 
                     63: if [ `echo $1 | wc -w` = 0 ] ; then
                     64:   echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
                     65:   exit 1
                     66: fi
                     67: 
                     68: 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"
                     69: 
                     70: rel_target_dir=$1
                     71: # All files in $src_dir_all (normally same as $rel_target_dir) are
                     72: # processed.
                     73: src_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.
                     76: src_dir_std=$3
                     77: 
                     78: if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
                     79:   abs_target_dir=$original_dir/$rel_target_dir
                     80: else
                     81:   abs_target_dir=$rel_target_dir
                     82: fi
                     83: 
                     84: # Determine whether this system has symbolic links.
                     85: if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
                     86:   rm -f $rel_target_dir/ShouldNotExist
                     87:   LINKS=true
                     88: elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
                     89:   rm -f /tmp/ShouldNotExist
                     90:   LINKS=true
                     91: else
                     92:   LINKS=false
                     93: fi
                     94: 
                     95: if [ \! -d $abs_target_dir ] ; then
                     96:   echo $progname\: creating directory $rel_target_dir
                     97:   mkdir $abs_target_dir
                     98: fi
                     99: 
                    100: echo $progname\: populating \`$rel_target_dir\'
                    101: 
                    102: include_path=""
                    103: 
                    104: if [ `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
                    113: fi
                    114: 
1.1.1.2 ! root      115: 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"
1.1       root      116: # "div ldiv", - ignored because these depend on div_t, ldiv_t
                    117: # ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
1.1.1.2 ! root      118: # Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
1.1       root      119: # Should perhaps also add NULL
1.1.1.2 ! root      120: 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"
1.1       root      121: 
                    122: done_dirs=""
                    123: echo "" >fixproto.list
                    124: 
                    125: for 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:          # echo doing $rel_source_file from $abs_source_dir
                    247:          required_list=
                    248:          extra_check_list=
                    249:          case $rel_source_file in
                    250:            ctype.h)
                    251:              required_list="isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper isxdigit tolower toupper" ;;
                    252:            dirent.h)
                    253:              required_list="closedir opendir readdir rewinddir" ;;
                    254:            errno.h)
                    255:              extra_check_list="errno" ;;
                    256:            curses.h)
                    257:              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" ;;
                    258:            fcntl.h)
                    259:              required_list="creat fcntl open" ;;
                    260:            grp.h)
                    261:              #Maybe also "getgrent fgetgrent setgrent endgrent" */
                    262:              required_list="getgrgid getgrnam" ;;
                    263:            limit.h)
                    264:              required_list= /* Lots of macros */ ;;
                    265:            locale.h)
                    266:              required_list="localeconv setlocale" ;;
                    267:            math.h)
                    268:              required_list="acos asin atan atan2 ceil cos cosh exp fabs floor fmod frexp ldexp log10 log modf pow sin sinh sqrt tan tanh"
                    269:              extra_check_list="HUGE_VAL" ;;
                    270:            pwd.h)
                    271:              required_list="getpwnam getpwuid" ;;
                    272:            setjmp.h)
                    273:              # Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.
                    274:              required_list="longjmp setjmp" ;;
                    275:            signal.h)
                    276:              # Left out signal() - its prototype is too complex for us!
                    277:              # Also left out "sigaction sigaddset sigdelset sigemptyset
                    278:              # sigfillset sigismember sigpending sigprocmask sigsuspend"
                    279:              # because these need sigset_t or struct sigaction.
                    280:              # Most systems that provide them will also declare them.
                    281:              required_list="kill raise" ;;
                    282:            stdio.h)
1.1.1.2 ! root      283:              required_list="clearerr fclose feof ferror fflush fgetc fgetpos fgets fopen fprintf fputc fputs fread freopen fscanf fseek fsetpos ftell fwrite getc getchar gets pclose perror popen printf putc putchar puts remove rename rewind scanf setbuf setvbuf sprintf sscanf vprintf vsprintf vfprintf tmpfile tmpnam ungetc"
1.1       root      284:              if grep '[^_a-zA-Z0-9]_flsbuf' <$abs_source_file >/dev/null; then
                    285:                required_list="$required_list _flsbuf _filbuf"
                    286:              fi
                    287:              # Should perhaps also handle NULL, EOF, ... ?
                    288:              ;;
                    289:            stdlib.h)
                    290:              required_list="$required_stdlib_h" ;;
                    291:            string.h)
1.1.1.2 ! root      292:              required_list="memchr memcmp memcpy memmove memset strcat strchr strcmp strcoll strcpy strcspn strerror strlen strncat strncmp strncpy strpbrk strrchr strspn strstr strtok strxfrm" ;;
1.1       root      293: # Should perhaps also add NULL and size_t
                    294:            sys/stat.h)
1.1.1.2 ! root      295:              required_list="chmod fstat mkdir mkfifo stat lstat umask"
1.1       root      296:              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" ;;
                    297:            sys/times.h)
                    298:              required_list="times" ;;
                    299: # "sys/types.h" add types (not in old g++-include)
                    300:            sys/utsname.h)
                    301:              required_list="uname" ;;
                    302:            sys/wait.h)
                    303:              required_list="wait waitpid"
                    304:              extra_check_list="WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED WSTOPSIG WTERMSIG WNOHANG WNOTRACED" ;;
                    305:            tar.h)
                    306:              required_list=  ;;
                    307:            termios.h)
                    308:              required_list="cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain tcflow tcflush tcgetattr tcsendbreak tcsetattr" ;;
                    309:            time.h)
                    310:              required_list="asctime clock ctime difftime gmtime localtime mktime strftime time tzset" ;;
                    311:            unistd.h)
                    312:              required_list="$required_unistd_h" ;;
                    313:          esac
                    314:          rm -f fixtmp.c fixtmp.i
                    315:          echo "#include <${rel_source_file}>" >fixtmp.c
                    316:          for macro in ${required_list} ${extra_check_list}
                    317:          do
                    318:            echo "#ifdef ${macro}" >>fixtmp.c
                    319:            echo "__DEFINED_MACRO_${macro};" >>fixtmp.c
                    320:            echo "#endif" >>fixtmp.c
                    321:          done
1.1.1.2 ! root      322:          if ${CPP} ${DEFINES} $include_path fixtmp.c >fixtmp.i 2>/dev/null
1.1       root      323:          then
1.1.1.2 ! root      324:           $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file "$required_list" <fixtmp.i
1.1       root      325:          else
                    326:            echo "${progname}: cpp could not parse ${abs_source_file} (ignored)"
                    327:          fi
                    328:          echo "${rel_source_file}" >>fixproto.list
                    329:        fi
                    330:       done
                    331:       rm -f fixtmp.c fixtmp.i
                    332:     done
                    333:     done_dirs="$done_dir $rel_source_dir"
                    334: done
                    335: 
                    336: # This might be more cleanly moved into the main loop, by adding
                    337: # a <dummy> source directory at the end.  FIXME!
                    338: for rel_source_file in unistd.h stdlib.h
                    339: do
                    340:   if grep "$rel_source_file" fixproto.list >/dev/null
                    341:   then true
                    342:   else
                    343:     echo Adding missing $rel_source_file
                    344:     rel_source_ident=`echo $rel_source_file | tr ./ __`
                    345:     required_list=`eval echo '${required_'${rel_source_ident}'-}'`
                    346:     cat >tmp.h <<EOF
                    347: #ifndef ${rel_source_ident}
                    348: #define ${rel_source_ident}
                    349: #endif
                    350: EOF
1.1.1.2 ! root      351:     ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file "$required_list" </dev/null
1.1       root      352:     rm tmp.h
                    353:   fi
                    354: done
                    355: exit 0

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