libiberty/maint-tool

   1 #!/usr/bin/perl
   2 # -*- perl -*-
   3
   4 #   Copyright (C) 2001, 2007, 2010, 2014
   5 #   Free Software Foundation
   6 #
   7 # This file is part of the libiberty library.
   8 # Libiberty is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU Library General Public
  10 # License as published by the Free Software Foundation; either
  11 # version 2 of the License, or (at your option) any later version.
  12 #
  13 # Libiberty is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 # Library General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Library General Public
  19 # License along with libiberty; see the file COPYING.LIB.  If not,
  20 # write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  21 # Boston, MA 02110-1301, USA.
  22 #
  23 # Originally written by DJ Delorie <dj@redhat.com>
  24
  25
  26 # This is a trivial script which checks the lists of C and O files in
  27 # the Makefile for consistency.
  28
  29 $mode = shift;
  30 $srcdir = ".";
  31
  32 if ($mode eq "-s") {
  33     $srcdir = shift;
  34     $mode = shift;
  35 }
  36
  37 &missing() if $mode eq "missing";
  38 &undoc() if $mode eq "undoc";
  39 &deps() if $mode eq "deps";
  40
  41 exit 0;
  42
  43 format STDOUT =
  44 ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<~
  45 $out
  46         ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<~~
  47 $out
  48 .
  49
  50 ######################################################################
  51
  52 sub missing {
  53
  54     opendir(S, $srcdir);
  55     while ($f = readdir S) {
  56         $have{$f} = 1;
  57     }
  58     closedir(S);
  59     opendir(S, ".");
  60     while ($f = readdir S) {
  61         $have{$f} = 1;
  62     }
  63     closedir(S);
  64
  65     for $a (@ARGV) {
  66         $listed{$a} = 1;
  67         $have{$a} = 0;
  68     }
  69
  70     for $f (sort keys %have) {
  71         next unless $have{$f};
  72         if ($f =~ /\.c$/) {
  73             print "S $f\n";
  74         }
  75     }
  76     for $f (sort keys %listed) {
  77         if ($f =~ /(.*)\.c$/) {
  78             $base = $1;
  79             if (! $listed{"./$base.o"}) {
  80                 print "O $f\n";
  81             }
  82         }
  83     }
  84 }
  85
  86 ######################################################################
  87
  88 sub undoc {
  89
  90     opendir(S, $srcdir);
  91     while ($file = readdir S) {
  92         if ($file =~ /\.texi$/) {
  93             open(T, "$srcdir/$file");
  94             while (<T>) {
  95                 if (/^\@deftype[^\(]* ([^\s\(]+) *\(/) {
  96                     $documented{$1} = 1;
  97                 }
  98             }
  99             close(T);
 100         }
 101         if ($file =~ /\.c$/) {
 102             open(C, "$srcdir/$file");
 103             while (<C>) {
 104                 if (/\@undocumented (\S+)/) {
 105                     $documented{$1} = 1;
 106                 }
 107                 if (/^static /) {
 108                     if (! /[\(;]/) {
 109                         s/[\r\n]+$/ /;
 110                         $_ .= <C>;
 111                     }
 112                     while ($_ =~ /\([^\)]*$/) {
 113                         s/[\r\n]+$/ /;
 114                         $_ .= <C>;
 115                     }
 116                 }
 117                 s/ VPARAMS([ \(])/$1/;
 118                 s/PREFIX\(([^\)]*)\)/byte_$1/;
 119                 if (/^static [^\(]* ([^\s\(]+) *\(.*\)$/) {
 120                     $documented{$1} = 1;
 121                 }
 122             }
 123         }
 124     }
 125     closedir(D);
 126
 127     # $out = join(' ', sort keys %documented);
 128     # write;
 129     # print "\n";
 130
 131     system "etags $srcdir/*.c $srcdir/../include/*.h";
 132     open(TAGS, "TAGS");
 133     while (<TAGS>) {
 134         s/[\r\n]+$//;
 135         if (/^\014$/) {
 136             $filename = <TAGS>;
 137             $filename =~ s/[\r\n]+$//;
 138             $filename =~ s/,\d+$//;
 139             $filename =~ s@.*[/\\]@@;
 140             next;
 141         }
 142         if ($filename =~ /\.c$/ ) {
 143             next unless /^[_a-zA-Z]/;
 144         } else {
 145             next unless /^\# *define/;
 146             s/\# *define *//;
 147         }
 148
 149         s/ VPARAMS//;
 150         s/ *\177.*//;
 151         s/,$//;
 152         s/DEFUN\(//;
 153         s/\(//;
 154
 155         next if /^static /;
 156         next if /\s/;
 157         next if /^_/;
 158         next if $documented{$_};
 159         next if /_H_?$/;
 160
 161         if ($seen_in{$_} ne $filename) {
 162             $saw{$_} ++;
 163         }
 164         $seen_in{$_} = $filename;
 165     }
 166
 167     for $k (keys %saw) {
 168         delete $saw{$k} if $saw{$k} > 1;
 169     }
 170
 171     for $k (sort keys %saw) {
 172         $fromfile{$seen_in{$k}} .= " " if $fromfile{$seen_in{$k}};
 173         $fromfile{$seen_in{$k}} .= $k;
 174     }
 175
 176     for $f (sort keys %fromfile) {
 177         $out = "$f: $fromfile{$f}";
 178         write;
 179     }
 180 }
 181
 182 ######################################################################
 183
 184 sub deps_for {
 185     my($f) = @_;
 186     my(%d);
 187     open(F, $f);
 188     %d = ();
 189     while (<F>) {
 190         if (/^#\s*include\s+["<](.*)[">]/) {
 191             $d{$1} = 1;
 192         }
 193     }
 194     close(F);
 195     return keys %d;
 196 }
 197
 198 sub canonicalize {
 199     my ($p) = @_;
 200     0 while $p =~ s@/\./@/@g;
 201     0 while $p =~ s@^\./@@g;
 202     0 while $p =~ s@/[^/]+/\.\./@/@g;
 203     return $p;
 204 }
 205
 206 sub locals_first {
 207     my ($a,$b) = @_;
 208     return -1 if $a eq "config.h";
 209     return  1 if $b eq "config.h";
 210     return $a cmp $b;
 211 }
 212
 213 sub deps {
 214
 215     $crule  = "\tif [ x\"\$(PICFLAG)\" != x ]; then \\\n";
 216     $crule .= "\t  \$(COMPILE.c) \$(PICFLAG) \$< -o pic/\$@; \\\n";
 217     $crule .= "\telse true; fi\n";
 218     $crule .= "\tif [ x\"\$(NOASANFLAG)\" != x ]; then \\\n";
 219     $crule .= "\t  \$(COMPILE.c) \$(PICFLAG) \$(NOASANFLAG) \$< -o noasan/\$@; \\\n";
 220     $crule .= "\telse true; fi\n";
 221     $crule .= "\t\$(COMPILE.c) \$< \$(OUTPUT_OPTION)\n";
 222     $crule .= "\n";
 223
 224     $incdir = shift @ARGV;
 225
 226     opendir(INC, $incdir);
 227     while ($f = readdir INC) {
 228         next unless $f =~ /\.h$/ || $f =~ /\.def$/;
 229         $mine{$f} = "\$(INCDIR)/$f";
 230         $deps{$f} = join(' ', &deps_for("$incdir/$f"));
 231     }
 232     $mine{'config.h'} = "config.h";
 233
 234     opendir(INC, $srcdir);
 235     while ($f = readdir INC) {
 236         next unless $f =~ /\.h$/;
 237         $mine{$f} = "\$(srcdir)/$f";
 238         $deps{$f} = join(' ', &deps_for("$srcdir/$f"));
 239     }
 240     $mine{'config.h'} = "config.h";
 241
 242     open(IN, "$srcdir/Makefile.in");
 243     open(OUT, ">$srcdir/Makefile.tmp");
 244     while (<IN>) {
 245         last if /remainder of this file/;
 246         print OUT;
 247     }
 248     print OUT "# The dependencies in the remainder of this file are automatically\n";
 249     print OUT "# generated by \"make maint-deps\".  Manual edits will be lost.\n\n";
 250
 251     opendir(S, $srcdir);
 252     for $f (sort readdir S) {
 253         if ($f =~ /\.c$/) {
 254
 255             %scanned = ();
 256             @pending = &deps_for("$srcdir/$f");
 257             while (@pending) {
 258                 @tmp = @pending;
 259                 @pending = ();
 260                 for $p (@tmp) {
 261                     next unless $mine{$p};
 262                     if (!$scanned{$p}) {
 263                         push(@pending, split(' ', $deps{$p}));
 264                         $scanned{$p} = 1;
 265                     }
 266                 }
 267             }
 268             @deps = sort { &locals_first($a,$b) } keys %scanned;
 269             $obj = $f;
 270             $obj =~ s/\.c$/.\$(objext)/;
 271             $obj = "./$obj:";
 272             if ($#deps >= 0) {
 273                 print OUT "$obj \$(srcdir)/$f";
 274                 $len = length("$obj $f");
 275                 for $dt (@deps) {
 276                     $d = $mine{$dt};
 277                     if ($len + length($d) > 70) {
 278                         printf OUT " \\\n\t$d";
 279                         $len = 8 + length($d);
 280                     } else {
 281                         print OUT " $d";
 282                         $len += length($d) + 1;
 283                     }
 284                 }
 285                 print OUT "\n";
 286             } else {
 287                 print OUT "$obj \$(srcdir)/$f\n";
 288             }
 289             $c = $crule;
 290             $c =~ s@\$\<@\$\(srcdir\)\/$f@g;
 291             print OUT $c;
 292         }
 293     }
 294     closedir(S);
 295     close(IN);
 296     close(OUT);
 297
 298     rename("$srcdir/Makefile.tmp", "$srcdir/Makefile.in");
 299 }