4f858293a9
'DEPEND[]=file.h' becomes a special way to say that 'file.h' must be generated before anything else is built. It's likely that a number of source files depend on these header files, this provides a simple way to make sure they are always generated even it the dependency data hasn't been added to the build file yet. Reviewed-by: Rich Salz <rsalz@openssl.org>
231 lines
8.7 KiB
Perl
231 lines
8.7 KiB
Perl
{- # -*- Mode: perl -*-
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use File::Basename;
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# A cache of objects for which a recipe has already been generated
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my %cache;
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# resolvedepends and reducedepends work in tandem to make sure
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# there are no duplicate dependencies and that they are in the
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# right order. This is especially used to sort the list of
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# libraries that a build depends on.
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sub resolvedepends {
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my $thing = shift;
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my @listsofar = @_; # to check if we're looping
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my @list = @{$unified_info{depends}->{$thing}};
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my @newlist = ();
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if (scalar @list) {
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foreach my $item (@list) {
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# It's time to break off when the dependency list starts looping
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next if grep { $_ eq $item } @listsofar;
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push @newlist, $item, resolvedepends($item, @listsofar, $item);
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}
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}
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@newlist;
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}
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sub reducedepends {
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my @list = @_;
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my @newlist = ();
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while (@list) {
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my $item = shift @list;
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push @newlist, $item
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unless grep { $item eq $_ } @list;
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}
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@newlist;
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}
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# dogenerate is responsible for producing all the recipes that build
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# generated source files. It recurses in case a dependency is also a
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# generated source file.
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sub dogenerate {
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my $src = shift;
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return "" if $cache{$src};
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my $obj = shift;
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my $bin = shift;
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my %opts = @_;
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if ($unified_info{generate}->{$src}) {
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die "$src is generated by Configure, should not appear in build file\n"
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if ref $unified_info{generate}->{$src} eq "";
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my $script = $unified_info{generate}->{$src}->[0];
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$OUT .= generatesrc(src => $src,
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generator => $unified_info{generate}->{$src},
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generator_incs => $unified_info{includes}->{$script},
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generator_deps => $unified_info{depends}->{$script},
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deps => $unified_info{depends}->{$src},
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incs => [ @{$unified_info{includes}->{$bin}},
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@{$unified_info{includes}->{$obj}} ],
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%opts);
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foreach (@{$unified_info{depends}->{$src}}) {
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dogenerate($_, $obj, $bin, %opts);
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}
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}
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$cache{$src} = 1;
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}
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# doobj is responsible for producing all the recipes that build
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# object files as well as dependency files.
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sub doobj {
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my $obj = shift;
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return "" if $cache{$obj};
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(my $obj_no_o = $obj) =~ s|\.o$||;
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my $bin = shift;
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my %opts = @_;
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if (@{$unified_info{sources}->{$obj}}) {
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$OUT .= src2obj(obj => $obj_no_o,
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srcs => $unified_info{sources}->{$obj},
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deps => $unified_info{depends}->{$obj},
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incs => [ @{$unified_info{includes}->{$bin}},
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@{$unified_info{includes}->{$obj}} ],
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%opts);
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foreach ((@{$unified_info{sources}->{$obj}},
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@{$unified_info{depends}->{$obj}})) {
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dogenerate($_, $obj, $bin, %opts);
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}
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}
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$cache{$obj} = 1;
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}
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# dolib is responsible for building libraries. It will call
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# libobj2shlib is shared libraries are produced, and obj2lib in all
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# cases. It also makes sure all object files for the library are
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# built.
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sub dolib {
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my $lib = shift;
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return "" if $cache{$lib};
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unless ($disabled{shared}) {
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my %ordinals =
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$unified_info{ordinals}->{$lib}
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? (ordinals => $unified_info{ordinals}->{$lib}) : ();
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$OUT .= libobj2shlib(shlib => $unified_info{sharednames}->{$lib},
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lib => $lib,
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objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
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(@{$unified_info{sources}->{$lib}},
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@{$unified_info{shared_sources}->{$lib}}) ],
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deps => [ reducedepends(resolvedepends($lib)) ],
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%ordinals);
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foreach (@{$unified_info{shared_sources}->{$lib}}) {
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doobj($_, $lib, intent => "lib");
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}
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}
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$OUT .= obj2lib(lib => $lib,
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objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
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@{$unified_info{sources}->{$lib}} ]);
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foreach (@{$unified_info{sources}->{$lib}}) {
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doobj($_, $lib, intent => "lib");
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}
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$cache{$lib} = 1;
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}
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# doengine is responsible for building engines. It will call
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# obj2dso, and also makes sure all object files for the library
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# are built.
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sub doengine {
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my $lib = shift;
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return "" if $cache{$lib};
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$OUT .= obj2dso(lib => $lib,
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objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
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(@{$unified_info{sources}->{$lib}},
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@{$unified_info{shared_sources}->{$lib}}) ],
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deps => [ resolvedepends($lib) ]);
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foreach ((@{$unified_info{sources}->{$lib}},
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@{$unified_info{shared_sources}->{$lib}})) {
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doobj($_, $lib, intent => "dso");
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}
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$cache{$lib} = 1;
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}
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# dobin is responsible for building programs. It will call obj2bin,
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# and also makes sure all object files for the library are built.
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sub dobin {
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my $bin = shift;
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return "" if $cache{$bin};
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my $deps = [ reducedepends(resolvedepends($bin)) ];
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$OUT .= obj2bin(bin => $bin,
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objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
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@{$unified_info{sources}->{$bin}} ],
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deps => $deps);
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foreach (@{$unified_info{sources}->{$bin}}) {
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doobj($_, $bin, intent => "bin");
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}
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$cache{$bin} = 1;
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}
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# dobin is responsible for building scripts from templates. It will
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# call in2script.
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sub doscript {
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my $script = shift;
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return "" if $cache{$script};
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$OUT .= in2script(script => $script,
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sources => $unified_info{sources}->{$script});
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$cache{$script} = 1;
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}
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sub dodir {
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my $dir = shift;
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return "" if !exists(&generatedir) or $cache{$dir};
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$OUT .= generatedir(dir => $dir,
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deps => $unified_info{dirinfo}->{$dir}->{deps},
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%{$unified_info{dirinfo}->{$_}->{products}});
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$cache{$dir} = 1;
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}
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# Start with populating the cache with all the overrides
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%cache = map { $_ => 1 } @{$unified_info{overrides}};
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# For convenience collect information regarding directories where
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# files are generated, those generated files and the end product
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# they end up in where applicable. Then, add build rules for those
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# directories
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if (exists &generatedir) {
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my %loopinfo = ( "dso" => [ @{$unified_info{engines}} ],
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"lib" => [ @{$unified_info{libraries}} ],
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"bin" => [ @{$unified_info{programs}} ],
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"script" => [ @{$unified_info{scripts}} ] );
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foreach my $type (keys %loopinfo) {
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foreach my $product (@{$loopinfo{$type}}) {
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my %dirs = ();
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my $pd = dirname($product);
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# We already have a "test" target, and the current directory
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# is just silly to make a target for
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$dirs{$pd} = 1 unless $pd eq "test" || $pd eq ".";
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foreach (@{$unified_info{sources}->{$product}}) {
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my $d = dirname($_);
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# We don't want to create targets for source directories
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# when building out of source
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next if ($config{sourcedir} ne $config{builddir}
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&& $d =~ m|^\Q$config{sourcedir}\E|);
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# We already have a "test" target, and the current directory
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# is just silly to make a target for
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next if $d eq "test" || $d eq ".";
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$dirs{$d} = 1;
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push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
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if $d ne $pd;
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}
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foreach (keys %dirs) {
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push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
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$product;
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}
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}
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}
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}
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# Build mandatory generated headers
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foreach (@{$unified_info{depends}->{""}}) { dogenerate($_); }
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# Build all known libraries, engines, programs and scripts.
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# Everything else will be handled as a consequence.
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foreach (@{$unified_info{libraries}}) { dolib($_); }
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foreach (@{$unified_info{engines}}) { doengine($_); }
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foreach (@{$unified_info{programs}}) { dobin($_); }
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foreach (@{$unified_info{scripts}}) { doscript($_); }
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foreach (sort keys %{$unified_info{dirinfo}}) { dodir($_); }
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# Finally, should there be any applicable BEGINRAW/ENDRAW sections,
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# they are added here.
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$OUT .= $_."\n" foreach @{$unified_info{rawlines}};
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-}
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