A local copy of OpenSSL from GitHub
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{- # -*- Mode: perl -*-
# 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}) {
$OUT .= generatesrc(src => $src,
generator => $unified_info{generate}->{$src},
deps => $unified_info{depends}->{$src},
incs => [ @{$unified_info{includes}->{$bin}},
@{$unified_info{includes}->{$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 => [ @{$unified_info{includes}->{$bin}},
@{$unified_info{includes}->{$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);
map { doobj($_, $lib, intent => "lib") } @{$unified_info{shared_sources}->{$lib}};
}
$OUT .= obj2lib(lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@{$unified_info{sources}->{$lib}} ]);
map { doobj($_, $lib, intent => "lib") } @{$unified_info{sources}->{$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) ]);
map { doobj($_, $lib, intent => "dso") } (@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}});
$cache{$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 => $deps);
map { doobj($_, $bin, intent => "bin") } @{$unified_info{sources}->{$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;
}
# Start with populating the cache with all the overrides
%cache = map { $_ => 1 } @{$unified_info{overrides}};
# Build all known libraries, engines, programs and scripts.
# Everything else will be handled as a consequence.
map { dolib($_) } @{$unified_info{libraries}};
map { doengine($_) } @{$unified_info{engines}};
map { dobin($_) } @{$unified_info{programs}};
map { doscript($_) } @{$unified_info{scripts}};
# Finally, should there be any applicable BEGINRAW/ENDRAW sections,
# they are added here.
$OUT .= $_."\n" foreach(@{$unified_info{rawlines}});
-}