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1 #!/bin/sh
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2 #
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3 # SYNOPSIS
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4 # fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
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5 #
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6 # COPYRIGHT
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7 # Copyright (C) 1993, 1994, 1997, 1998, 2002, 2003, 2007, 2008
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8 # Free Software Foundation, Inc.
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9 # This file is part of GCC.
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10 #
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11 # GCC is free software; you can redistribute it and/or modify
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12 # it under the terms of the GNU General Public License as published by
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13 # the Free Software Foundation; either version 3, or (at your option)
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14 # any later version.
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15 #
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16 # GCC is distributed in the hope that it will be useful,
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17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 # GNU General Public License for more details.
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20 #
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21 # You should have received a copy of the GNU General Public License
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22 # along with GCC; see the file COPYING3. If not see
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23 # <http://www.gnu.org/licenses/>.
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24 #
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25 # DESCRIPTION
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26 # Adjunct script for GCC to populate a directory with ANSI,
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27 # Posix.1, and C++ compatible header files.
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28 #
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29 # Each file found under SOURCE-DIR-ALL is analyzed and "fixed."
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30 # Only standard ANSI/POSIX files found under SOURCE-DIR-STD
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31 # are analyzed and "fixed."
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32 # The SOURCE-DIRs are searched in order; a file found
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33 # under multiple SOURCE-DIRs is only handled for the first one.
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34 #
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35 # STRATEGY
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36 # Each include file is fed through cpp, and the scan-decls program
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37 # parses it, and emits any found function declarations.
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38 # The fix-header program analyzes the scan-decls output,
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39 # together with the original include file, and writes a "fixed"
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40 # include file, if needed.
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41 #
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42 # The comment at the beginning of fix-header.c lists specifically
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43 # what kind of changes are made.
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44 #
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45 # NOTE
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46 # Some file space will be wasted, because the original header
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47 # files are copied. An earlier version just included the original
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48 # by "reference", using GNU cpp's #include_next mechanism.
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49 # This is currently not done, partly because #include_next is
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50 # fragile (susceptible to version incompatibilities, and depends
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51 # and GCC-specific features), and partly for performance reasons.
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52 #
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53 # AUTHORS
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54 # Ron Guilmette (rfg@netcom.com) (original idea and code)
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55 # Per Bothner (bothner@cygnus.com) (major re-write)
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56
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57 dirname=`echo "$0" | sed 's,^[^/]*$,.,;s,//*[^/]*$,,'`
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58 progname=`echo "$0" | sed 's,.*/,,'`
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59 original_dir=`${PWDCMD-pwd}`
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60 FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
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61 DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
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62
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63 if mkdir -p . 2> /dev/null; then
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64 # Great, mkdir accepts -p
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65 mkinstalldirs="mkdir -p"
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66 else
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67 # We expect mkinstalldirs to be passed in the environment.
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68 # If it is not, assume it is in the directory that contains this script.
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69 mkinstalldirs=${mkinstalldirs-"/bin/sh $dirname/mkinstalldirs"}
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70 if $mkinstalldirs . 2> /dev/null; then
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71 :
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72 else
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73 # But, in case of failure, fallback to plain mkdir, and hope it works
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74 mkinstalldirs=mkdir
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75 fi
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76 fi
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77
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78 if [ `echo $1 | wc -w` = 0 ] ; then
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79 echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
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80 exit 1
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81 fi
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82
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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"
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84
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85 rel_target_dir=$1
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86 # All files in $src_dir_all (normally same as $rel_target_dir) are
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87 # processed.
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88 src_dir_all=$2
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89 # In $src_dir_std (normally same as /usr/include), only the
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90 # "standard" ANSI/POSIX files listed in $std_files are processed.
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91 src_dir_std=$3
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92
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93 case $rel_target_dir in
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94 /* | [A-Za-z]:[\\/]*)
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95 abs_target_dir=$rel_target_dir
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96 ;;
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97 *)
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98 abs_target_dir=$original_dir/$rel_target_dir
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99 ;;
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100 esac
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101
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102 # Determine whether this system has symbolic links.
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103 if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
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104 rm -f $rel_target_dir/ShouldNotExist
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105 LINKS=true
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106 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
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107 rm -f /tmp/ShouldNotExist
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108 LINKS=true
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109 else
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110 LINKS=false
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111 fi
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112
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113 if [ \! -d $abs_target_dir ] ; then
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114 echo $progname\: creating directory $rel_target_dir
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115 $mkinstalldirs $abs_target_dir
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116 fi
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117
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118 echo $progname\: populating \`$rel_target_dir\'
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119
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120 include_path=""
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121
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122 if [ `echo $* | wc -w` != 0 ] ; then
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123 for rel_source_dir in $src_dir_all $src_dir_std; do
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124 case $rel_source_dir in
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125 /* | [A-Za-z]:[\\/]*)
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126 abs_source_dir=$rel_source_dir
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127 ;;
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128 *)
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129 abs_source_dir=$original_dir/$rel_source_dir
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130 ;;
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131 esac
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132 include_path="$include_path -I$abs_source_dir"
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133 done
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134 fi
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135
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136 done_dirs=""
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137 subdirs_made=""
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138 echo "" >fixproto.list
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139
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140 for code in ALL STD ; do
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141
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142 subdirs="."
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143
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144 case $code in
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145 ALL)
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146 rel_source_dir=$src_dir_all
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147
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148 dirs="."
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149 levels=2
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150 while $LINKS && test -n "$dirs" -a $levels -gt 0
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151 do
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152 levels=`expr $levels - 1`
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153 newdirs=
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154 for d in $dirs ; do
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155 # Find all directories under $d, relative to $d, excluding $d itself.
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156 # Assume directory names ending in CC or containing ++ are
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157 # for C++, so skip those.
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158 subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
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159 sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
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160 -e '/CC$/d' -e '/[+][+]/d'`
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161 links=
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162 links=`cd $rel_source_dir; find $d/. -type l -print | \
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163 sed -e "s|$d/./|$d/|" -e 's|^\./||'`
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164 for link in $links --dummy-- ; do
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165 test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
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166 done
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167 done
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168 dirs="$newdirs"
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169 subdirs="$subdirs $newdirs"
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170 done
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171 ;;
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172 STD)
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173 rel_source_dir=$src_dir_std
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174 ;;
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175 esac
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176
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177 case $rel_source_dir in
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178 /* | [A-Za-z]:[\\/]*)
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179 abs_source_dir=$rel_source_dir
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180 ;;
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181 *)
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182 abs_source_dir=$original_dir/$rel_source_dir
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183 ;;
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184 esac
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185
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186 if [ \! -d $abs_source_dir ] ; then
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187 echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
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188 continue
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189 fi
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190
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191 for rel_source_subdir in $subdirs; do
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192
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193 abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
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194 if [ \! -d $abs_target_subdir ] ; then
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195 if $mkinstalldirs $abs_target_subdir ; then
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196 subdirs_made="$abs_target_subdir $subdirs_made"
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197 fi
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198 fi
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199 # Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
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200 rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^\./||'`
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201
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202 case $code in
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203 ALL)
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204 # The 'sed' is in case the *.h matches nothing, which yields "*.h"
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205 # which would then get re-globbed in the current directory. Sigh.
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206 rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
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207 ;;
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208
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209 STD)
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210 files_to_check="$std_files"
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211 rel_source_files=""
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212
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213 # Also process files #included by the $std_files.
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214 while [ -n "${files_to_check}" ]
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215 do
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216 new_files_to_check=""
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217 for file in $files_to_check ; do
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218 xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
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219 # Create the dir where this file will go when fixed.
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220 xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
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221 if [ \! -d $abs_target_subdir/$xxdir ] ; then
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222 if $mkinstalldirs $abs_target_subdir/$xxdir ; then
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223 subdirs_made="$abs_target_subdir/$xxdir $subdirs_made"
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224 fi
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225 fi
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226 # Just in case we have edited out a symbolic link
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227 if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
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228 file=$xxfile
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229 fi
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230 case " $rel_source_files " in
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231 *" ${file} "*)
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232 # Already seen $file; nothing to do
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233 ;;
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234 *)
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235 if test -f $src_dir_std/$file ; then
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236 rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
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237 # For #include "foo.h", that might be either "foo.h"
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238 # or "${rel_dir}foo.h (or something bogus).
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239 new_files_to_check="$new_files_to_check "`sed -n \
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240 -e 's@ @ @g' \
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241 -e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
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242 's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
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243 <$src_dir_std/$file`
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244 rel_source_files="$rel_source_files $file"
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245 fi
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246 ;;
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247 esac
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248 done
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249 files_to_check="$new_files_to_check"
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250 done
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251 rel_source_files="$rel_source_files"
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252 ;;
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253 esac
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254
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255 for filename in $rel_source_files ; do
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256 rel_source_file=${rel_source_prefix}${filename}
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257 abs_source_file=$abs_source_dir/$rel_source_file
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258 abs_target_file=$abs_target_dir/$rel_source_file
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259
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260 if test "$filename" = 'NONE' ; then
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261 echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
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262 # If target file exists, check if was written while processing one
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263 # of the earlier source directories; if so ignore it.
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264 elif test -f $abs_target_file -a -n "$done_dirs" \
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265 && grep "$rel_source_file" fixproto.list >/dev/null
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266 then true
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267 else
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268 $FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
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269 if test $? != 0 ; then exit 1 ; fi
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270 echo "${rel_source_file}" >>fixproto.list
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271 fi
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272 done
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273 done
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274 done_dirs="$done_dir $rel_source_dir"
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275 done
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276
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277 # This might be more cleanly moved into the main loop, by adding
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278 # a <dummy> source directory at the end. FIXME!
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279
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280 # All the headers we create define size_t and NULL.
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281 for rel_source_file in unistd.h stdlib.h string.h time.h ; do
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282 if grep "$rel_source_file" fixproto.list >/dev/null ; then
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283 : # It exists, we don't need to make it
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284 else
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285 echo Adding missing $rel_source_file
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286 rel_source_ident=`echo $rel_source_file | tr ./ __`
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287 cat >tmp.h <<EOF
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288 /* Fake ${rel_source_file}, created by GCC.
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289 The functions declared in this file do not necessarily exist in
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290 your C library. */
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291 #ifndef __${rel_source_ident}
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292 #define __${rel_source_ident}
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293
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294 #define __need_NULL
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295 #define __need_size_t
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296 #include <stddef.h>
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297 EOF
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298 # Insert special stuff for particular files here.
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299 case ${rel_source_file} in
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300 time.h)
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301 # If time.h doesn't exist, find out if sys/time.h does.
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302 if test -f $src_dir_std/sys/time.h \
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303 || grep "sys/time.h" fixproto.list >/dev/null ; then
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304 # It does; include it and hope it has the needed declarations.
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305 # Some versions require sys/types.h.
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306 cat >>tmp.h <<EOF
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307
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308 #include <sys/types.h>
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309 #include <sys/time.h>
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310 EOF
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311 else
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312 # It doesn't. Make up plausible definitions for time_t, clock_t.
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313 # Forward-declare struct tm. Hope nobody tries to use it. (Odds
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314 # are they won't.)
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315 cat >>tmp.h <<EOF
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316
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317 typedef long time_t;
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318 typedef long clock_t;
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319 struct tm;
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320 EOF
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321 fi ;;
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322 esac
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323 cat >>tmp.h <<EOF
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324
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325 #endif /* __${rel_source_ident} */
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326 EOF
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327 ${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
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328 if test $? != 0 ; then exit 1 ; fi
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329 if test -f $abs_target_dir/$rel_source_file ; then
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330 rm tmp.h
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331 else
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332 mv tmp.h $abs_target_dir/$rel_source_file
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333 fi
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334 fi
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335 done
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336
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337 # Remove any directories that we made that are still empty.
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338 rmdir $subdirs_made 2>/dev/null
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339
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340 exit 0
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