Configurations/common.tmpl

   1 {- # -*- Mode: perl -*-
   2
   3  use File::Basename;
   4
   5  # A cache of objects for which a recipe has already been generated
   6  my %cache;
   7
   8  # resolvedepends and reducedepends work in tandem to make sure
   9  # there are no duplicate dependencies and that they are in the
  10  # right order.  This is especially used to sort the list of
  11  # libraries that a build depends on.
  12  sub extensionlesslib {
  13      my @result = map { $_ =~ /(\.a)?$/; $` } @_;
  14      return @result if wantarray;
  15      return $result[0];
  16  }
  17  sub resolvedepends {
  18      my $thing = shift;
  19      my $extensionlessthing = extensionlesslib($thing);
  20      my @listsofar = @_;    # to check if we're looping
  21      my @list = @{$unified_info{depends}->{$extensionlessthing}};
  22      my @newlist = ();
  23      if (scalar @list) {
  24          foreach my $item (@list) {
  25              my $extensionlessitem = extensionlesslib($item);
  26              # It's time to break off when the dependency list starts looping
  27              next if grep { extensionlesslib($_) eq $extensionlessitem } @listsofar;
  28              push @newlist, $item, resolvedepends($item, @listsofar, $item);
  29          }
  30      }
  31      @newlist;
  32  }
  33  sub reducedepends {
  34      my @list = @_;
  35      my @newlist = ();
  36      while (@list) {
  37          my $item = shift @list;
  38          my $extensionlessitem = extensionlesslib($item);
  39          push @newlist, $item
  40              unless grep { $extensionlessitem eq extensionlesslib($_) } @list;
  41      }
  42      @newlist;
  43  }
  44
  45  # is_installed checks if a given file will be installed (i.e. they are
  46  # not defined _NO_INST in build.info)
  47  sub is_installed {
  48      my $product = shift;
  49      if (grep { $product eq $_ }
  50          map { (@{$unified_info{install}->{$_}}) }
  51          keys %{$unified_info{install}}) {
  52          return 1;
  53      }
  54      return 0;
  55  }
  56
  57  # dogenerate is responsible for producing all the recipes that build
  58  # generated source files.  It recurses in case a dependency is also a
  59  # generated source file.
  60  sub dogenerate {
  61      my $src = shift;
  62      return "" if $cache{$src};
  63      my $obj = shift;
  64      my $bin = shift;
  65      my %opts = @_;
  66      if ($unified_info{generate}->{$src}) {
  67          die "$src is generated by Configure, should not appear in build file\n"
  68              if ref $unified_info{generate}->{$src} eq "";
  69          my $script = $unified_info{generate}->{$src}->[0];
  70          $OUT .= generatesrc(src => $src,
  71                              generator => $unified_info{generate}->{$src},
  72                              generator_incs => $unified_info{includes}->{$script},
  73                              generator_deps => $unified_info{depends}->{$script},
  74                              deps => $unified_info{depends}->{$src},
  75                              incs => [ @{$unified_info{includes}->{$bin}},
  76                                        @{$unified_info{includes}->{$obj}} ],
  77                              %opts);
  78          foreach (@{$unified_info{depends}->{$src}}) {
  79              dogenerate($_, $obj, $bin, %opts);
  80          }
  81      }
  82      $cache{$src} = 1;
  83  }
  84
  85  # doobj is responsible for producing all the recipes that build
  86  # object files as well as dependency files.
  87  sub doobj {
  88      my $obj = shift;
  89      return "" if $cache{$obj};
  90      (my $obj_no_o = $obj) =~ s|\.o$||;
  91      my $bin = shift;
  92      my %opts = @_;
  93      if (@{$unified_info{sources}->{$obj}}) {
  94          $OUT .= src2obj(obj => $obj_no_o,
  95                          product => $bin,
  96                          srcs => $unified_info{sources}->{$obj},
  97                          deps => $unified_info{depends}->{$obj},
  98                          incs => [ @{$unified_info{includes}->{$bin}},
  99                                    @{$unified_info{includes}->{$obj}} ],
 100                          %opts);
 101          foreach ((@{$unified_info{sources}->{$obj}},
 102                    @{$unified_info{depends}->{$obj}})) {
 103              dogenerate($_, $obj, $bin, %opts);
 104          }
 105      }
 106      $cache{$obj} = 1;
 107  }
 108
 109  # dolib is responsible for building libraries.  It will call
 110  # libobj2shlib is shared libraries are produced, and obj2lib in all
 111  # cases.  It also makes sure all object files for the library are
 112  # built.
 113  sub dolib {
 114      my $lib = shift;
 115      return "" if $cache{$lib};
 116      unless ($disabled{shared}) {
 117          my %ordinals =
 118              $unified_info{ordinals}->{$lib}
 119              ? (ordinals => $unified_info{ordinals}->{$lib}) : ();
 120          $OUT .= libobj2shlib(shlib => $unified_info{sharednames}->{$lib},
 121                               lib => $lib,
 122                               objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
 123                                         (@{$unified_info{sources}->{$lib}},
 124                                          @{$unified_info{shared_sources}->{$lib}}) ],
 125                               deps => [ reducedepends(resolvedepends($lib)) ],
 126                               installed => is_installed($lib),
 127                               %ordinals);
 128          foreach (@{$unified_info{shared_sources}->{$lib}}) {
 129              doobj($_, $lib, intent => "lib", installed => is_installed($lib));
 130          }
 131      }
 132      $OUT .= obj2lib(lib => $lib,
 133                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
 134                                @{$unified_info{sources}->{$lib}} ]);
 135      foreach (@{$unified_info{sources}->{$lib}}) {
 136          doobj($_, $lib, intent => "lib");
 137      }
 138      $cache{$lib} = 1;
 139  }
 140
 141  # doengine is responsible for building engines.  It will call
 142  # obj2dso, and also makes sure all object files for the library
 143  # are built.
 144  sub doengine {
 145      my $lib = shift;
 146      return "" if $cache{$lib};
 147      $OUT .= obj2dso(lib => $lib,
 148                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
 149                                (@{$unified_info{sources}->{$lib}},
 150                                 @{$unified_info{shared_sources}->{$lib}}) ],
 151                      deps => [ resolvedepends($lib) ],
 152                      installed => is_installed($lib));
 153      foreach ((@{$unified_info{sources}->{$lib}},
 154                @{$unified_info{shared_sources}->{$lib}})) {
 155          doobj($_, $lib, intent => "dso", installed => is_installed($lib));
 156      }
 157      $cache{$lib} = 1;
 158  }
 159
 160  # dobin is responsible for building programs.  It will call obj2bin,
 161  # and also makes sure all object files for the library are built.
 162  sub dobin {
 163      my $bin = shift;
 164      return "" if $cache{$bin};
 165      my $deps = [ reducedepends(resolvedepends($bin)) ];
 166      $OUT .= obj2bin(bin => $bin,
 167                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
 168                                @{$unified_info{sources}->{$bin}} ],
 169                      deps => $deps,
 170                      installed => is_installed($bin));
 171      foreach (@{$unified_info{sources}->{$bin}}) {
 172          doobj($_, $bin, intent => "bin", installed => is_installed($bin));
 173      }
 174      $cache{$bin} = 1;
 175  }
 176
 177  # dobin is responsible for building scripts from templates.  It will
 178  # call in2script.
 179  sub doscript {
 180      my $script = shift;
 181      return "" if $cache{$script};
 182      $OUT .= in2script(script => $script,
 183                        sources => $unified_info{sources}->{$script},
 184                        installed => is_installed($script));
 185      $cache{$script} = 1;
 186  }
 187
 188  sub dodir {
 189      my $dir = shift;
 190      return "" if !exists(&generatedir) or $cache{$dir};
 191      $OUT .= generatedir(dir => $dir,
 192                          deps => $unified_info{dirinfo}->{$dir}->{deps},
 193                          %{$unified_info{dirinfo}->{$_}->{products}});
 194      $cache{$dir} = 1;
 195  }
 196
 197  # Start with populating the cache with all the overrides
 198  %cache = map { $_ => 1 } @{$unified_info{overrides}};
 199
 200  # For convenience collect information regarding directories where
 201  # files are generated, those generated files and the end product
 202  # they end up in where applicable.  Then, add build rules for those
 203  # directories
 204  if (exists &generatedir) {
 205      my %loopinfo = ( "dso" => [ @{$unified_info{engines}} ],
 206                       "lib" => [ @{$unified_info{libraries}} ],
 207                       "bin" => [ @{$unified_info{programs}} ],
 208                       "script" => [ @{$unified_info{scripts}} ] );
 209      foreach my $type (keys %loopinfo) {
 210          foreach my $product (@{$loopinfo{$type}}) {
 211              my %dirs = ();
 212              my $pd = dirname($product);
 213
 214              # We already have a "test" target, and the current directory
 215              # is just silly to make a target for
 216              $dirs{$pd} = 1 unless $pd eq "test" || $pd eq ".";
 217
 218              foreach (@{$unified_info{sources}->{$product}}) {
 219                  my $d = dirname($_);
 220
 221                  # We don't want to create targets for source directories
 222                  # when building out of source
 223                  next if ($config{sourcedir} ne $config{builddir}
 224                           && $d =~ m|^\Q$config{sourcedir}\E|);
 225                  # We already have a "test" target, and the current directory
 226                  # is just silly to make a target for
 227                  next if $d eq "test" || $d eq ".";
 228
 229                  $dirs{$d} = 1;
 230                  push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
 231                      if $d ne $pd;
 232              }
 233              foreach (keys %dirs) {
 234                  push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
 235                  $product;
 236              }
 237          }
 238      }
 239  }
 240
 241  # Build mandatory generated headers
 242  foreach (@{$unified_info{depends}->{""}}) { dogenerate($_); }
 243
 244  # Build all known libraries, engines, programs and scripts.
 245  # Everything else will be handled as a consequence.
 246  foreach (@{$unified_info{libraries}}) { dolib($_);    }
 247  foreach (@{$unified_info{engines}})   { doengine($_); }
 248  foreach (@{$unified_info{programs}})  { dobin($_);    }
 249  foreach (@{$unified_info{scripts}})   { doscript($_); }
 250
 251  foreach (sort keys %{$unified_info{dirinfo}})  { dodir($_); }
 252
 253  # Finally, should there be any applicable BEGINRAW/ENDRAW sections,
 254  # they are added here.
 255  $OUT .= $_."\n" foreach @{$unified_info{rawlines}};
 256 -}