Configurations/common.tmpl

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