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|
{- # -*- Mode: perl -*-
use File::Basename;
# A cache of objects for which a recipe has already been generated
my %cache;
# resolvedepends and reducedepends work in tandem to make sure
# there are no duplicate dependencies and that they are in the
# right order. This is especially used to sort the list of
# libraries that a build depends on.
sub resolvedepends {
my $thing = shift;
my @listsofar = @_; # to check if we're looping
my @list = @{$unified_info{depends}->{$thing}};
my @newlist = ();
if (scalar @list) {
foreach my $item (@list) {
# It's time to break off when the dependency list starts looping
next if grep { $_ eq $item } @listsofar;
push @newlist, $item, resolvedepends($item, @listsofar, $item);
}
}
@newlist;
}
sub reducedepends {
my @list = @_;
my @newlist = ();
while (@list) {
my $item = shift @list;
push @newlist, $item
unless grep { $item eq $_ } @list;
}
@newlist;
}
# dogenerate is responsible for producing all the recipes that build
# generated source files. It recurses in case a dependency is also a
# generated source file.
sub dogenerate {
my $src = shift;
return "" if $cache{$src};
my $obj = shift;
my $bin = shift;
my %opts = @_;
if ($unified_info{generate}->{$src}) {
die "$src is generated by Configure, should not appear in build file\n"
if ref $unified_info{generate}->{$src} eq "";
my $script = $unified_info{generate}->{$src}->[0];
$OUT .= generatesrc(src => $src,
generator => $unified_info{generate}->{$src},
generator_incs => $unified_info{includes}->{$script},
generator_deps => $unified_info{depends}->{$script},
deps => $unified_info{depends}->{$src},
incs => $unified_info{includes}->{$obj},
%opts);
foreach (@{$unified_info{depends}->{$src}}) {
dogenerate($_, $obj, $bin, %opts);
}
}
$cache{$src} = 1;
}
# doobj is responsible for producing all the recipes that build
# object files as well as dependency files.
sub doobj {
my $obj = shift;
return "" if $cache{$obj};
(my $obj_no_o = $obj) =~ s|\.o$||;
my $bin = shift;
my %opts = @_;
if (@{$unified_info{sources}->{$obj}}) {
$OUT .= src2obj(obj => $obj_no_o,
srcs => $unified_info{sources}->{$obj},
deps => $unified_info{depends}->{$obj},
incs => $unified_info{includes}->{$obj},
%opts);
foreach ((@{$unified_info{sources}->{$obj}},
@{$unified_info{depends}->{$obj}})) {
dogenerate($_, $obj, $bin, %opts);
}
}
$cache{$obj} = 1;
}
# dolib is responsible for building libraries. It will call
# libobj2shlib is shared libraries are produced, and obj2lib in all
# cases. It also makes sure all object files for the library are
# built.
sub dolib {
my $lib = shift;
return "" if $cache{$lib};
unless ($disabled{shared}) {
my %ordinals =
$unified_info{ordinals}->{$lib}
? (ordinals => $unified_info{ordinals}->{$lib}) : ();
$OUT .= libobj2shlib(shlib => $unified_info{sharednames}->{$lib},
lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
(@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}}) ],
deps => [ reducedepends(resolvedepends($lib)) ],
%ordinals);
foreach (@{$unified_info{shared_sources}->{$lib}}) {
doobj($_, $lib, intent => "lib");
}
}
$OUT .= obj2lib(lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@{$unified_info{sources}->{$lib}} ]);
foreach (@{$unified_info{sources}->{$lib}}) {
doobj($_, $lib, intent => "lib");
}
$cache{$lib} = 1;
}
# doengine is responsible for building engines. It will call
# obj2dso, and also makes sure all object files for the library
# are built.
sub doengine {
my $lib = shift;
return "" if $cache{$lib};
$OUT .= obj2dso(lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
(@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}}) ],
deps => [ resolvedepends($lib) ]);
foreach ((@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}})) {
doobj($_, $lib, intent => "dso");
}
$cache{$lib} = 1;
}
# dobin is responsible for building programs. It will call obj2bin,
# and also makes sure all object files for the library are built.
sub dobin {
my $bin = shift;
return "" if $cache{$bin};
my $deps = [ reducedepends(resolvedepends($bin)) ];
$OUT .= obj2bin(bin => $bin,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@{$unified_info{sources}->{$bin}} ],
deps => $deps);
foreach (@{$unified_info{sources}->{$bin}}) {
doobj($_, $bin, intent => "bin");
}
$cache{$bin} = 1;
}
# dobin is responsible for building scripts from templates. It will
# call in2script.
sub doscript {
my $script = shift;
return "" if $cache{$script};
$OUT .= in2script(script => $script,
sources => $unified_info{sources}->{$script});
$cache{$script} = 1;
}
sub dodir {
my $dir = shift;
return "" if !exists(&generatedir) or $cache{$dir};
$OUT .= generatedir(dir => $dir,
deps => $unified_info{dirinfo}->{$dir}->{deps},
%{$unified_info{dirinfo}->{$_}->{products}});
$cache{$dir} = 1;
}
# Start with populating the cache with all the overrides
%cache = map { $_ => 1 } @{$unified_info{overrides}};
# For convenience collect information regarding directories where
# files are generated, those generated files and the end product
# they end up in where applicable. Then, add build rules for those
# directories
if (exists &generatedir) {
my %loopinfo = ( "dso" => [ @{$unified_info{engines}} ],
"lib" => [ @{$unified_info{libraries}} ],
"bin" => [ @{$unified_info{programs}} ],
"script" => [ @{$unified_info{scripts}} ] );
foreach my $type (keys %loopinfo) {
foreach my $product (@{$loopinfo{$type}}) {
my %dirs = ();
my $pd = dirname($product);
# We already have a "test" target, and the current directory
# is just silly to make a target for
$dirs{$pd} = 1 unless $pd eq "test" || $pd eq ".";
foreach (@{$unified_info{sources}->{$product}}) {
my $d = dirname($_);
# We don't want to create targets for source directories
# when building out of source
next if ($config{sourcedir} ne $config{builddir}
&& $d =~ m|^\Q$config{sourcedir}\E|);
# We already have a "test" target, and the current directory
# is just silly to make a target for
next if $d eq "test" || $d eq ".";
$dirs{$d} = 1;
push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
if $d ne $pd;
}
foreach (keys %dirs) {
push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
$product;
}
}
}
}
# Build mandatory generated headers
foreach (@{$unified_info{depends}->{""}}) { dogenerate($_); }
# Build all known libraries, engines, programs and scripts.
# Everything else will be handled as a consequence.
foreach (@{$unified_info{libraries}}) { dolib($_); }
foreach (@{$unified_info{engines}}) { doengine($_); }
foreach (@{$unified_info{programs}}) { dobin($_); }
foreach (@{$unified_info{scripts}}) { doscript($_); }
foreach (sort keys %{$unified_info{dirinfo}}) { dodir($_); }
# Finally, should there be any applicable BEGINRAW/ENDRAW sections,
# they are added here.
$OUT .= $_."\n" foreach @{$unified_info{rawlines}};
-}
|
