utils/GenLibDeps.pl

   1 #!/usr/bin/perl -w
   2 #
   3 # Program:  GenLibDeps.pl
   4 #
   5 # Synopsis: Generate HTML output that shows the dependencies between a set of
   6 #           libraries. The output of this script should periodically replace
   7 #           the similar content in the UsingLibraries.html document.
   8 #
   9 # Syntax:   GenLibDeps.pl [-flat] <directory_with_libraries_in_it> [path_to_nm_binary]
  10 #
  11 use strict;
  12 use warnings;
  13 # Parse arguments...
  14 my $FLAT = 0;
  15 my $WHY = 0;
  16 my $PEROBJ = 0;
  17 my $PEROBJINCL = 0;
  18 while (scalar(@ARGV) and ($_ = $ARGV[0], /^[-+]/)) {
  19   shift;
  20   last if /^--$/;  # Stop processing arguments on --
  21
  22   # List command line options here...
  23   if (/^-flat$/)     { $FLAT = 1; next; }
  24   if (/^-why/)       { $WHY = 1; $FLAT = 1; next; }
  25   if (/^-perobj$/)    { $PEROBJ = 1; next; }
  26   if (/^-perobjincl/) { $PEROBJINCL = 1; next;}
  27   print "Unknown option: $_ : ignoring!\n";
  28 }
  29
  30 # Give first option a name.
  31 my $Directory = $ARGV[0];
  32 if (!defined($Directory) || ! -d "$Directory") {
  33   die "First argument must specify the directory containing LLVM libs\n";
  34 }
  35
  36 my $nmPath = $ARGV[1];
  37
  38 # Find the "dot" program
  39 my $DotPath="";
  40 if (!$FLAT) {
  41   chomp($DotPath = `which dot`);
  42   die "Can't find 'dot'" if (! -x "$DotPath");
  43 }
  44
  45 if (defined($ENV{NM})) {
  46   chomp($nmPath=$ENV{NM});
  47 }
  48
  49 if (!defined($nmPath) || $nmPath eq "") {
  50   chomp($nmPath=`which nm`);
  51   die "Can't find 'nm'" if (! -x "$nmPath");
  52 }
  53
  54 my $ranlibPath;
  55 if ($PEROBJ) {
  56   $ranlibPath = $ARGV[2];
  57   if (defined($ENV{RANLIB})) {
  58     chomp($ranlibPath=$ENV{RANLIB});
  59   }
  60
  61   if (!defined($ranlibPath) || $ranlibPath eq "") {
  62     chomp($ranlibPath=`which ranlib`);
  63     die "Can't find 'ranlib'" if (! -x "$ranlibPath");
  64   }
  65 }
  66
  67 # Open the directory and read its contents, sorting by name and differentiating
  68 # by whether its a library (.a) or an object file (.o)
  69 opendir DIR,$Directory;
  70 my @files = readdir DIR;
  71 closedir DIR;
  72 my @libs = grep(/libLLVM.*\.(dylib|so|a)$/,sort(@files));
  73 # Omit the all-of-llvm shared library.
  74 @libs = grep(!/libLLVM-\d\.\d(svn)?\.(dylib|so)/, @libs);
  75 my @objs = grep(/LLVM.*\.o$/,sort(@files));
  76
  77 # Declare the hashes we will use to keep track of the library and object file
  78 # symbol definitions.
  79 my %libdefs;
  80 my %objdefs;
  81
  82 my %libobjs;
  83 my %objdeps=();
  84 # Gather library definitions at object file granularity (optional)
  85 if ($PEROBJ) {
  86   foreach my $lib (@libs ) {
  87     `$ranlibPath $Directory/$lib`;
  88     my $libpath = $lib;
  89     $libpath =~ s/^libLLVM(.*)\.a/$1/;
  90     $libpath =~ s/(.+)CodeGen$/Target\/$1/;
  91     $libpath =~ s/(.+)AsmPrinter$/Target\/$1\/AsmPrinter/;
  92     $libpath =~ s/(.+)AsmParser$/Target\/$1\/AsmParser/;
  93     $libpath =~ s/(.+)Info$/Target\/$1\/TargetInfo/;
  94     $libpath =~ s/(.+)Disassembler$/Target\/$1\/Disassembler/;
  95     $libpath =~ s/SelectionDAG/CodeGen\/SelectionDAG/;
  96     $libpath =~ s/^AsmPrinter/CodeGen\/AsmPrinter/;
  97     $libpath =~ s/^BitReader/Bitcode\/Reader/;
  98     $libpath =~ s/^BitWriter/Bitcode\/Writer/;
  99     $libpath =~ s/^CBackend/Target\/CBackend/;
 100     $libpath =~ s/^CppBackend/Target\/CppBackend/;
 101     $libpath =~ s/^MSIL/Target\/MSIL/;
 102     $libpath =~ s/^Core/VMCore/;
 103     $libpath =~ s/^Instrumentation/Transforms\/Instrumentation/;
 104     $libpath =~ s/^Interpreter/ExecutionEngine\/Interpreter/;
 105     $libpath =~ s/^JIT/ExecutionEngine\/JIT/;
 106     $libpath =~ s/^ScalarOpts/Transforms\/Scalar/;
 107     $libpath =~ s/^TransformUtils/Transforms\/Utils/;
 108     $libpath =~ s/^ipa/Analysis\/IPA/;
 109     $libpath =~ s/^ipo/Transforms\/IPO/;
 110     $libpath = "lib/".$libpath."/";
 111     open DEFS, "$nmPath -sg $Directory/$lib|";
 112     while (<DEFS>) {
 113       chomp;
 114       if (/^([^ ]*) in ([^ ]*)/) {
 115         my $objfile = $libpath.$2;
 116         $objdefs{$1} = $objfile;
 117         $objdeps{$objfile} = {};
 118         $libobjs{$lib}{$objfile}=1;
 119 #        my $p = "../llvm/".$objfile;
 120 #        $p =~ s/Support\/reg(.*).o/Support\/reg$1.c/;
 121 #        $p =~ s/.o$/.cpp/;
 122 #        unless (-e $p) {
 123 #          die "$p\n"
 124 #        }
 125       }
 126     }
 127     close DEFS or die "nm failed";
 128   }
 129   foreach my $lib (@libs ) {
 130     my $libpath = $lib;
 131     $libpath =~ s/^libLLVM(.*)\.a/$1/;
 132     $libpath =~ s/(.+)CodeGen$/Target\/$1/;
 133     $libpath =~ s/(.+)AsmPrinter$/Target\/$1\/AsmPrinter/;
 134     $libpath =~ s/(.+)AsmParser$/Target\/$1\/AsmParser/;
 135     $libpath =~ s/(.+)Info$/Target\/$1\/TargetInfo/;
 136     $libpath =~ s/(.+)Disassembler$/Target\/$1\/Disassembler/;
 137     $libpath =~ s/SelectionDAG/CodeGen\/SelectionDAG/;
 138     $libpath =~ s/^AsmPrinter/CodeGen\/AsmPrinter/;
 139     $libpath =~ s/^BitReader/Bitcode\/Reader/;
 140     $libpath =~ s/^BitWriter/Bitcode\/Writer/;
 141     $libpath =~ s/^CBackend/Target\/CBackend/;
 142     $libpath =~ s/^CppBackend/Target\/CppBackend/;
 143     $libpath =~ s/^MSIL/Target\/MSIL/;
 144     $libpath =~ s/^Core/VMCore/;
 145     $libpath =~ s/^Instrumentation/Transforms\/Instrumentation/;
 146     $libpath =~ s/^Interpreter/ExecutionEngine\/Interpreter/;
 147     $libpath =~ s/^JIT/ExecutionEngine\/JIT/;
 148     $libpath =~ s/^ScalarOpts/Transforms\/Scalar/;
 149     $libpath =~ s/^TransformUtils/Transforms\/Utils/;
 150     $libpath =~ s/^ipa/Analysis\/IPA/;
 151     $libpath =~ s/^ipo/Transforms\/IPO/;
 152     $libpath = "lib/".$libpath."/";
 153     open UDEFS, "$nmPath -Aup $Directory/$lib|";
 154     while (<UDEFS>) {
 155       chomp;
 156       if (/:([^:]+):/) {
 157         my $obj = $libpath.$1;
 158         s/[^ ]+: *U //;
 159         if (defined($objdefs{$_})) {
 160           $objdeps{$obj}{$objdefs{$_}}=1;
 161         }
 162       }
 163     }
 164     close UDEFS or die "nm failed"
 165   }
 166 } else {
 167 # Gather definitions from the libraries
 168 foreach my $lib (@libs ) {
 169   open DEFS, "$nmPath -g $Directory/$lib|";
 170   while (<DEFS>) {
 171     next if (! / [ABCDGRST] /);
 172     s/^[^ ]* [ABCDGRST] //;
 173     s/\015?\012//; # not sure if <DEFS> is in binmode and uses LF or CRLF.
 174                    # this strips both LF and CRLF.
 175     $libdefs{$_} = $lib;
 176   }
 177   close DEFS or die "nm failed";
 178 }
 179 }
 180
 181 # Gather definitions from the object files.
 182 foreach my $obj (@objs ) {
 183   open DEFS, "$nmPath -g $Directory/$obj |";
 184   while (<DEFS>) {
 185     next if (! / [ABCDGRST] /);
 186     s/^[^ ]* [ABCDGRST] //;
 187     s/\015?\012//; # not sure if <DEFS> is in binmode and uses LF or CRLF.
 188                    # this strips both LF and CRLF.
 189     $objdefs{$_} = $obj;
 190   }
 191   close DEFS or die "nm failed";
 192 }
 193
 194 # Generate one entry in the <dl> list. This generates the <dt> and <dd> elements
 195 # for one library or object file. The <dt> provides the name of the library or
 196 # object. The <dd> provides a list of the libraries/objects it depends on.
 197 sub gen_one_entry {
 198   my $lib = $_[0];
 199   my $lib_ns = $lib;
 200   $lib_ns =~ s/(.*)\.[oa]/$1/;
 201   if ($FLAT) {
 202     print "$lib:";
 203     if ($WHY) { print "\n"; }
 204   } else {
 205     print "  <dt><b>$lib</b</dt><dd><ul>\n";
 206   }
 207   open UNDEFS,
 208     "$nmPath -u $Directory/$lib | sed -e 's/^[ 0]* U //' | sort | uniq |";
 209   my %DepLibs;
 210   while (<UNDEFS>) {
 211     chomp;
 212     my $lib_printed = 0;
 213     if (defined($libdefs{$_}) && $libdefs{$_} ne $lib) {
 214       $DepLibs{$libdefs{$_}} = [] unless exists $DepLibs{$libdefs{$_}};
 215       push(@{$DepLibs{$libdefs{$_}}}, $_);
 216     } elsif (defined($objdefs{$_}) && $objdefs{$_} ne $lib) {
 217       if ($PEROBJ && !$PEROBJINCL) {
 218         # -perobjincl makes .a files depend on .o files they contain themselves
 219         # default is don't depend on these.
 220         next if defined $libobjs{$lib}{$objdefs{$_}};
 221       }
 222       my $libroot = $lib;
 223       $libroot =~ s/lib(.*).a/$1/;
 224       if ($objdefs{$_} ne "$libroot.o") {
 225         $DepLibs{$objdefs{$_}} = [] unless exists $DepLibs{$objdefs{$_}};
 226         push(@{$DepLibs{$objdefs{$_}}}, $_);
 227       }
 228     }
 229   }
 230   close UNDEFS or die "nm failed";
 231   unless(keys %DepLibs) {
 232     # above failed
 233     open UNDEFS, "$nmPath -u $Directory/$lib |";
 234     while (<UNDEFS>) {
 235       # to bypass non-working sed
 236       if ('  ' eq substr($_,0,2) and index($_,'U ')) {
 237         $_ = substr($_,index($_,'U ')+2)
 238       };
 239       $_ = substr($_,index($_,'  *U ')+5) if -1!=index($_,'  *U ');
 240
 241       chomp;
 242       my $lib_printed = 0;
 243       if (defined($libdefs{$_}) && $libdefs{$_} ne $lib) {
 244         $DepLibs{$libdefs{$_}} = [] unless exists $DepLibs{$libdefs{$_}};
 245         push(@{$DepLibs{$libdefs{$_}}}, $_);
 246       } elsif (defined($objdefs{$_}) && $objdefs{$_} ne $lib) {
 247         my $libroot = $lib;
 248         $libroot =~ s/lib(.*).a/$1/;
 249         if ($objdefs{$_} ne "$libroot.o") {
 250           $DepLibs{$objdefs{$_}} = [] unless exists $DepLibs{$objdefs{$_}};
 251           push(@{$DepLibs{$objdefs{$_}}}, $_);
 252         }
 253       }
 254     }
 255     close UNDEFS or die "nm failed";
 256   }
 257   if ($PEROBJINCL) {
 258      # include the .a's objects
 259      for my $obj (keys %{$libobjs{$lib}}) {
 260         $DepLibs{$obj} = ["<.a object>"] unless exists $DepLibs{$obj};
 261      }
 262      my $madechange = 1;
 263      while($madechange) {
 264       $madechange = 0;
 265       my %temp = %DepLibs;
 266       foreach my $obj (keys %DepLibs) {
 267         foreach my $objdeps (keys %{$objdeps{$obj}}) {
 268           next if defined $temp{$objdeps};
 269           push(@{$temp{$objdeps}}, $obj);
 270           $madechange = 1;
 271         }
 272       }
 273       %DepLibs = %temp;
 274      }
 275   }
 276
 277   for my $key (sort keys %DepLibs) {
 278     if ($FLAT) {
 279       print " $key";
 280       if ($WHY) {
 281         print "\n";
 282         my @syms = @{$DepLibs{$key}};
 283         foreach my $sym (@syms) {
 284           print "  $sym\n";
 285         }
 286       }
 287     } else {
 288       print "    <li>$key</li>\n";
 289     }
 290     my $suffix = substr($key,length($key)-1,1);
 291     $key =~ s/(.*)\.[oa]/$1/;
 292     if ($suffix eq "a") {
 293       if (!$FLAT) { print DOT "$lib_ns -> $key [ weight=0 ];\n" };
 294     } else {
 295       if (!$FLAT) { print DOT "$lib_ns -> $key [ weight=10];\n" };
 296     }
 297   }
 298   if ($FLAT) {
 299     if (!$WHY) {
 300       print "\n";
 301     }
 302   } else {
 303     print "  </ul></dd>\n";
 304   }
 305 }
 306
 307 # Make sure we flush on write. This is slower but correct based on the way we
 308 # write I/O in gen_one_entry.
 309 $| = 1;
 310
 311 # Print the definition list tag
 312 if (!$FLAT) {
 313     print "<dl>\n";
 314
 315   open DOT, "| $DotPath -Tgif > libdeps.gif";
 316
 317   print DOT "digraph LibDeps {\n";
 318   print DOT "  size=\"40,15\"; \n";
 319   print DOT "  ratio=\"1.33333\"; \n";
 320   print DOT "  margin=\"0.25\"; \n";
 321   print DOT "  rankdir=\"LR\"; \n";
 322   print DOT "  mclimit=\"50.0\"; \n";
 323   print DOT "  ordering=\"out\"; \n";
 324   print DOT "  center=\"1\";\n";
 325   print DOT "node [shape=\"box\",\n";
 326   print DOT "      color=\"#000088\",\n";
 327   print DOT "      fillcolor=\"#FFFACD\",\n";
 328   print DOT "      fontcolor=\"#3355BB\",\n";
 329   print DOT "      style=\"filled\",\n";
 330   print DOT "      fontname=\"sans\",\n";
 331   print DOT "      fontsize=\"24\"\n";
 332   print DOT "];\n";
 333   print DOT "edge [dir=\"forward\",style=\"solid\",color=\"#000088\"];\n";
 334 }
 335
 336 # Print libraries first
 337 foreach my $lib (@libs) {
 338   gen_one_entry($lib);
 339 }
 340
 341 if ($PEROBJ) {
 342   foreach my $obj (keys %objdeps) {
 343      print "$obj:";
 344      if (!$PEROBJINCL) {
 345       foreach my $dep (keys %{$objdeps{$obj}}) {
 346           print " $dep";
 347       }
 348     }
 349      print "\n";
 350   }
 351 }
 352
 353 if (!$FLAT) {
 354   print DOT "}\n";
 355   close DOT;
 356   open DOT, "| $DotPath -Tgif > objdeps.gif";
 357   print DOT "digraph ObjDeps {\n";
 358   print DOT "  size=\"8,10\";\n";
 359   print DOT "  margin=\"0.25\";\n";
 360   print DOT "  rankdir=\"LR\";\n";
 361   print DOT "  mclimit=\"50.0\";\n";
 362   print DOT "  ordering=\"out\";\n";
 363   print DOT "  center=\"1\";\n";
 364   print DOT "node [shape=\"box\",\n";
 365   print DOT "      color=\"#000088\",\n";
 366   print DOT "      fillcolor=\"#FFFACD\",\n";
 367   print DOT "      fontcolor=\"#3355BB\",\n";
 368   print DOT "      fontname=\"sans\",\n";
 369   print DOT "      style=\"filled\",\n";
 370   print DOT "      fontsize=\"24\"\n";
 371   print DOT "];\n";
 372   print DOT "edge [dir=\"forward\",style=\"solid\",color=\"#000088\"];\n";
 373 }
 374
 375 # Print objects second
 376 foreach my $obj (@objs) {
 377   gen_one_entry($obj);
 378 }
 379
 380 if (!$FLAT) {
 381   print DOT "}\n";
 382   close DOT;
 383
 384 # Print end tag of definition list element
 385   print "</dl>\n";
 386 }