libiberty/maint-tool

   1 #!/usr/bin/perl
   2 # -*- perl -*-
   3
   4 #   Copyright (C) 2001-2020 Free Software Foundation, Inc.
   5 #
   6 # This file is part of the libiberty library.
   7 # Libiberty is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Library General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2 of the License, or (at your option) any later version.
  11 #
  12 # Libiberty is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # Library General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU Library General Public
  18 # License along with libiberty; see the file COPYING.LIB.  If not,
  19 # write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  20 # Boston, MA 02110-1301, USA.
  21 #
  22 # Originally written by DJ Delorie <dj@redhat.com>
  23
  24
  25 # This is a trivial script which checks the lists of C and O files in
  26 # the Makefile for consistency.
  27
  28 $mode = shift;
  29 $srcdir = ".";
  30
  31 if ($mode eq "-s") {
  32     $srcdir = shift;
  33     $mode = shift;
  34 }
  35
  36 &missing() if $mode eq "missing";
  37 &undoc() if $mode eq "undoc";
  38 &deps() if $mode eq "deps";
  39
  40 exit 0;
  41
  42 format STDOUT =
  43 ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<~
  44 $out
  45         ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<~~
  46 $out
  47 .
  48
  49 ######################################################################
  50
  51 sub missing {
  52
  53     opendir(S, $srcdir);
  54     while ($f = readdir S) {
  55         $have{$f} = 1;
  56     }
  57     closedir(S);
  58     opendir(S, ".");
  59     while ($f = readdir S) {
  60         $have{$f} = 1;
  61     }
  62     closedir(S);
  63
  64     for $a (@ARGV) {
  65         $listed{$a} = 1;
  66         $have{$a} = 0;
  67     }
  68
  69     for $f (sort keys %have) {
  70         next unless $have{$f};
  71         if ($f =~ /\.c$/) {
  72             print "S $f\n";
  73         }
  74     }
  75     for $f (sort keys %listed) {
  76         if ($f =~ /(.*)\.c$/) {
  77             $base = $1;
  78             if (! $listed{"./$base.o"}) {
  79                 print "O $f\n";
  80             }
  81         }
  82     }
  83 }
  84
  85 ######################################################################
  86
  87 sub undoc {
  88
  89     opendir(S, $srcdir);
  90     while ($file = readdir S) {
  91         if ($file =~ /\.texi$/) {
  92             open(T, "$srcdir/$file");
  93             while (<T>) {
  94                 if (/^\@deftype[^\(]* ([^\s\(]+) *\(/) {
  95                     $documented{$1} = 1;
  96                 }
  97             }
  98             close(T);
  99         }
 100         if ($file =~ /\.c$/) {
 101             open(C, "$srcdir/$file");
 102             while (<C>) {
 103                 if (/\@undocumented (\S+)/) {
 104                     $documented{$1} = 1;
 105                 }
 106                 if (/^static /) {
 107                     if (! /[\(;]/) {
 108                         s/[\r\n]+$/ /;
 109                         $_ .= <C>;
 110                     }
 111                     while ($_ =~ /\([^\)]*$/) {
 112                         s/[\r\n]+$/ /;
 113                         $_ .= <C>;
 114                     }
 115                 }
 116                 s/ VPARAMS([ \(])/$1/;
 117                 s/PREFIX\(([^\)]*)\)/byte_$1/;
 118                 if (/^static [^\(]* ([^\s\(]+) *\(.*\)$/) {
 119                     $documented{$1} = 1;
 120                 }
 121             }
 122         }
 123     }
 124     closedir(D);
 125
 126     # $out = join(' ', sort keys %documented);
 127     # write;
 128     # print "\n";
 129
 130     system "etags $srcdir/*.c $srcdir/../include/*.h";
 131     open(TAGS, "TAGS");
 132     while (<TAGS>) {
 133         s/[\r\n]+$//;
 134         if (/^\014$/) {
 135             $filename = <TAGS>;
 136             $filename =~ s/[\r\n]+$//;
 137             $filename =~ s/,\d+$//;
 138             $filename =~ s@.*[/\\]@@;
 139             next;
 140         }
 141         if ($filename =~ /\.c$/ ) {
 142             next unless /^[_a-zA-Z]/;
 143         } else {
 144             next unless /^\# *define/;
 145             s/\# *define *//;
 146         }
 147
 148         s/ VPARAMS//;
 149         s/ *\177.*//;
 150         s/,$//;
 151         s/DEFUN\(//;
 152         s/\(//;
 153
 154         next if /^static /;
 155         next if /\s/;
 156         next if /^_/;
 157         next if $documented{$_};
 158         next if /_H_?$/;
 159
 160         if ($seen_in{$_} ne $filename) {
 161             $saw{$_} ++;
 162         }
 163         $seen_in{$_} = $filename;
 164     }
 165
 166     for $k (keys %saw) {
 167         delete $saw{$k} if $saw{$k} > 1;
 168     }
 169
 170     for $k (sort keys %saw) {
 171         $fromfile{$seen_in{$k}} .= " " if $fromfile{$seen_in{$k}};
 172         $fromfile{$seen_in{$k}} .= $k;
 173     }
 174
 175     for $f (sort keys %fromfile) {
 176         $out = "$f: $fromfile{$f}";
 177         write;
 178     }
 179 }
 180
 181 ######################################################################
 182
 183 sub deps_for {
 184     my($f) = @_;
 185     my(%d);
 186     open(F, $f);
 187     %d = ();
 188     while (<F>) {
 189         if (/^#\s*include\s+["<](.*)[">]/) {
 190             $d{$1} = 1;
 191         }
 192     }
 193     close(F);
 194     return keys %d;
 195 }
 196
 197 sub canonicalize {
 198     my ($p) = @_;
 199     0 while $p =~ s@/\./@/@g;
 200     0 while $p =~ s@^\./@@g;
 201     0 while $p =~ s@/[^/]+/\.\./@/@g;
 202     return $p;
 203 }
 204
 205 sub locals_first {
 206     my ($a,$b) = @_;
 207     return -1 if $a eq "config.h";
 208     return  1 if $b eq "config.h";
 209     return $a cmp $b;
 210 }
 211
 212 sub deps {
 213
 214     $crule  = "\tif [ x\"\$(PICFLAG)\" != x ]; then \\\n";
 215     $crule .= "\t  \$(COMPILE.c) \$(PICFLAG) \$< -o pic/\$@; \\\n";
 216     $crule .= "\telse true; fi\n";
 217     $crule .= "\tif [ x\"\$(NOASANFLAG)\" != x ]; then \\\n";
 218     $crule .= "\t  \$(COMPILE.c) \$(PICFLAG) \$(NOASANFLAG) \$< -o noasan/\$@; \\\n";
 219     $crule .= "\telse true; fi\n";
 220     $crule .= "\t\$(COMPILE.c) \$< \$(OUTPUT_OPTION)\n";
 221     $crule .= "\n";
 222
 223     $incdir = shift @ARGV;
 224
 225     opendir(INC, $incdir);
 226     while ($f = readdir INC) {
 227         next unless $f =~ /\.h$/ || $f =~ /\.def$/;
 228         $mine{$f} = "\$(INCDIR)/$f";
 229         $deps{$f} = join(' ', &deps_for("$incdir/$f"));
 230     }
 231     $mine{'config.h'} = "config.h";
 232
 233     opendir(INC, $srcdir);
 234     while ($f = readdir INC) {
 235         next unless $f =~ /\.h$/;
 236         $mine{$f} = "\$(srcdir)/$f";
 237         $deps{$f} = join(' ', &deps_for("$srcdir/$f"));
 238     }
 239     $mine{'config.h'} = "config.h";
 240
 241     open(IN, "$srcdir/Makefile.in");
 242     open(OUT, ">$srcdir/Makefile.tmp");
 243     while (<IN>) {
 244         last if /remainder of this file/;
 245         print OUT;
 246     }
 247     print OUT "# The dependencies in the remainder of this file are automatically\n";
 248     print OUT "# generated by \"make maint-deps\".  Manual edits will be lost.\n\n";
 249
 250     opendir(S, $srcdir);
 251     for $f (sort readdir S) {
 252         if ($f =~ /\.c$/) {
 253
 254             %scanned = ();
 255             @pending = &deps_for("$srcdir/$f");
 256             while (@pending) {
 257                 @tmp = @pending;
 258                 @pending = ();
 259                 for $p (@tmp) {
 260                     next unless $mine{$p};
 261                     if (!$scanned{$p}) {
 262                         push(@pending, split(' ', $deps{$p}));
 263                         $scanned{$p} = 1;
 264                     }
 265                 }
 266             }
 267             @deps = sort { &locals_first($a,$b) } keys %scanned;
 268             $obj = $f;
 269             $obj =~ s/\.c$/.\$(objext)/;
 270             $obj = "./$obj:";
 271             if ($#deps >= 0) {
 272                 print OUT "$obj \$(srcdir)/$f";
 273                 $len = length("$obj $f");
 274                 for $dt (@deps) {
 275                     $d = $mine{$dt};
 276                     if ($len + length($d) > 70) {
 277                         printf OUT " \\\n\t$d";
 278                         $len = 8 + length($d);
 279                     } else {
 280                         print OUT " $d";
 281                         $len += length($d) + 1;
 282                     }
 283                 }
 284                 print OUT "\n";
 285             } else {
 286                 print OUT "$obj \$(srcdir)/$f\n";
 287             }
 288             $c = $crule;
 289             $c =~ s@\$\<@\$\(srcdir\)\/$f@g;
 290             print OUT $c;
 291         }
 292     }
 293     closedir(S);
 294     close(IN);
 295     close(OUT);
 296
 297     rename("$srcdir/Makefile.tmp", "$srcdir/Makefile.in");
 298 }