Configurations/common.tmpl

   1 {- # -*- Mode: perl -*-
   2
   3      # A cache of objects for which a recipe has already been generated
   4      my %cache;
   5
   6  # resolvedepends and reducedepends work in tandem to make sure
   7  # there are no duplicate dependencies and that they are in the
   8  # right order.  This is especially used to sort the list of
   9  # libraries that a build depends on.
  10  sub resolvedepends {
  11      my $thing = shift;
  12      my @listsofar = @_;    # to check if we're looping
  13      my @list = @{$unified_info{depends}->{$thing}};
  14      my @newlist = ();
  15      if (scalar @list) {
  16          foreach my $item (@list) {
  17              # It's time to break off when the dependency list starts looping
  18              next if grep { $_ eq $item } @listsofar;
  19              push @newlist, $item, resolvedepends($item, @listsofar, $item);
  20          }
  21      }
  22      @newlist;
  23  }
  24  sub reducedepends {
  25      my @list = @_;
  26      my @newlist = ();
  27      while (@list) {
  28          my $item = shift @list;
  29          push @newlist, $item
  30              unless grep { $item eq $_ } @list;
  31      }
  32      @newlist;
  33  }
  34
  35  # doobj is responsible for producing all the recipes that build
  36  # object files as well as dependency files.
  37  sub doobj {
  38      my $obj = shift;
  39      return "" if $cache{$obj};
  40      (my $obj_no_o = $obj) =~ s|\.o$||;
  41      my $bin = shift;
  42      my %opts = @_;
  43      if (@{$unified_info{sources}->{$obj}}) {
  44          $OUT .= src2obj(obj => $obj_no_o,
  45                          srcs => $unified_info{sources}->{$obj},
  46                          deps => [ reducedepends(resolvedepends($obj)) ],
  47                          incs => [ @{$unified_info{includes}->{$bin}},
  48                                    @{$unified_info{includes}->{$obj}} ],
  49                          %opts);
  50      }
  51      $cache{$obj} = 1;
  52  }
  53
  54  # dolib is responsible for building libraries.  It will call
  55  # libobj2shlib is shared libraries are produced, and obj2lib in all
  56  # cases.  It also makes sure all object files for the library are
  57  # built.
  58  sub dolib {
  59      my $lib = shift;
  60      return "" if $cache{$lib};
  61      unless ($disabled{shared}) {
  62          my %ordinals =
  63              $unified_info{ordinals}->{$lib}
  64              ? (ordinals => $unified_info{ordinals}->{$lib}) : ();
  65          $OUT .= libobj2shlib(shlib => $unified_info{sharednames}->{$lib},
  66                               lib => $lib,
  67                               objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
  68                                         @{$unified_info{sources}->{$lib}} ],
  69                               deps => [ reducedepends(resolvedepends($lib)) ],
  70                               %ordinals);
  71      }
  72      $OUT .= obj2lib(lib => $lib,
  73                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
  74                                @{$unified_info{sources}->{$lib}} ]);
  75      map { doobj($_, $lib, intent => "lib") } @{$unified_info{sources}->{$lib}};
  76      $cache{$lib} = 1;
  77  }
  78
  79  # doengine is responsible for building engines.  It will call
  80  # obj2dso, and also makes sure all object files for the library
  81  # are built.
  82  sub doengine {
  83      my $lib = shift;
  84      return "" if $cache{$lib};
  85      $OUT .= obj2dso(lib => $lib,
  86                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
  87                                @{$unified_info{sources}->{$lib}} ],
  88                      deps => [ resolvedepends($lib) ]);
  89      map { doobj($_, $lib, intent => "dso") } @{$unified_info{sources}->{$lib}};
  90      $cache{$lib} = 1;
  91  }
  92
  93  # dobin is responsible for building programs.  It will call obj2bin,
  94  # and also makes sure all object files for the library are built.
  95  sub dobin {
  96      my $bin = shift;
  97      return "" if $cache{$bin};
  98      my $deps = [ reducedepends(resolvedepends($bin)) ];
  99      $OUT .= obj2bin(bin => $bin,
 100                      objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
 101                                @{$unified_info{sources}->{$bin}} ],
 102                      deps => $deps);
 103      map { doobj($_, $bin, intent => "bin") } @{$unified_info{sources}->{$bin}};
 104      $cache{$bin} = 1;
 105  }
 106
 107  # dobin is responsible for building scripts from templates.  It will
 108  # call in2script.
 109  sub doscript {
 110      my $script = shift;
 111      return "" if $cache{$script};
 112      $OUT .= in2script(script => $script,
 113                        sources => $unified_info{sources}->{$script});
 114      $cache{$script} = 1;
 115  }
 116
 117  # Build all known libraries, engines, programs and scripts.
 118  # Everything else will be handled as a consequence.
 119  map { dolib($_) } @{$unified_info{libraries}};
 120  map { doengine($_) } @{$unified_info{engines}};
 121  map { dobin($_) } @{$unified_info{programs}};
 122  map { doscript($_) } @{$unified_info{scripts}};
 123
 124  # Finally, should there be any applicable BEGINRAW/ENDRAW sections,
 125  # they are added here.
 126  $OUT .= $_."\n" foreach(@{$unified_info{rawlines}});
 127 -}