use 5.006;
use strict;
use warnings;
use Cwd 'abs_path';
my $PACKAGE_NAME = q{@PACKAGE_NAME@};
my $VERSION = q{@PACKAGE_VERSION@};
my $PREFIX = q{@LLVM_PREFIX@};
my $LLVM_CONFIGTIME = q{@LLVM_CONFIGTIME@};
my $LLVM_SRC_ROOT = q{@abs_top_srcdir@};
my $LLVM_OBJ_ROOT = q{@abs_top_builddir@};
my $ARCH = lc(q{@ARCH@});
my $TARGET_TRIPLE = q{@target@};
my $TARGETS_TO_BUILD = q{@TARGETS_TO_BUILD@};
my $TARGET_HAS_JIT = q{@TARGET_HAS_JIT@};
my @TARGETS_BUILT = map { lc($_) } qw{@TARGETS_TO_BUILD@};
$ARCH = "x86" if $ARCH eq "x86_64";
my $CPPFLAGS = q{@LLVM_CPPFLAGS@};
my $CFLAGS = q{@LLVM_CFLAGS@};
my $CXXFLAGS = q{@LLVM_CXXFLAGS@};
my $LDFLAGS = q{@LLVM_LDFLAGS@};
my $SYSTEM_LIBS = q{@LIBS@};
my $LLVM_BUILDMODE = q{@LLVM_BUILDMODE@};
my ($RUN_DIR) = ($0 =~ /^(.*)\/.*$/);
my $ABS_RUN_DIR = abs_path("$RUN_DIR/..");
chomp($ABS_RUN_DIR);
my $ABS_OBJ_ROOT = "$LLVM_OBJ_ROOT/$LLVM_BUILDMODE";
$ABS_OBJ_ROOT = abs_path("$ABS_OBJ_ROOT") if (-d $ABS_OBJ_ROOT);
chomp($ABS_OBJ_ROOT);
my $INCLUDEDIR = "$ABS_RUN_DIR/include";
my $INCLUDEOPTION = "-I$INCLUDEDIR";
my $LIBDIR = "$ABS_RUN_DIR/lib";
my $BINDIR = "$ABS_RUN_DIR/bin";
if ($ABS_RUN_DIR eq $ABS_OBJ_ROOT) {
$INCLUDEDIR = "$LLVM_SRC_ROOT/include";
$INCLUDEOPTION = "-I$INCLUDEDIR -I$LLVM_OBJ_ROOT/include"
} else {
$PREFIX = $ABS_RUN_DIR;
}
sub usage;
sub fix_library_names (@);
sub fix_library_files (@);
sub expand_dependencies (@);
sub name_map_entries;
usage if @ARGV == 0;
my @components;
my $has_opt = 0;
my $want_libs = 0;
my $want_libnames = 0;
my $want_libfiles = 0;
my $want_components = 0;
foreach my $arg (@ARGV) {
if ($arg =~ /^-/) {
if ($arg eq "--version") {
$has_opt = 1; print "$VERSION\n";
} elsif ($arg eq "--prefix") {
$has_opt = 1; print "$PREFIX\n";
} elsif ($arg eq "--bindir") {
$has_opt = 1; print "$BINDIR\n";
} elsif ($arg eq "--includedir") {
$has_opt = 1; print "$INCLUDEDIR\n";
} elsif ($arg eq "--libdir") {
$has_opt = 1; print "$LIBDIR\n";
} elsif ($arg eq "--cppflags") {
$has_opt = 1; print "$INCLUDEOPTION $CPPFLAGS\n";
} elsif ($arg eq "--cflags") {
$has_opt = 1; print "$INCLUDEOPTION $CFLAGS\n";
} elsif ($arg eq "--cxxflags") {
$has_opt = 1; print "$INCLUDEOPTION $CXXFLAGS\n";
} elsif ($arg eq "--ldflags") {
$has_opt = 1; print "-L$LIBDIR $LDFLAGS $SYSTEM_LIBS\n";
} elsif ($arg eq "--libs") {
$has_opt = 1; $want_libs = 1;
} elsif ($arg eq "--libnames") {
$has_opt = 1; $want_libnames = 1;
} elsif ($arg eq "--libfiles") {
$has_opt = 1; $want_libfiles = 1;
} elsif ($arg eq "--components") {
$has_opt = 1; print join(' ', name_map_entries), "\n";
} elsif ($arg eq "--targets-built") {
$has_opt = 1; print join(' ', @TARGETS_BUILT), "\n";
} elsif ($arg eq "--host-target") {
$has_opt = 1; print "$TARGET_TRIPLE\n";
} elsif ($arg eq "--build-mode") {
$has_opt = 1; print "$LLVM_BUILDMODE\n";
} elsif ($arg eq "--obj-root") {
$has_opt = 1; print abs_path("$LLVM_OBJ_ROOT/");
} elsif ($arg eq "--src-root") {
$has_opt = 1; print abs_path("$LLVM_SRC_ROOT/");
} else {
usage();
}
} else {
push @components, $arg;
}
}
usage unless $has_opt;
if (@components == 0) {
push @components, 'all';
}
@components = map lc, @components;
if ($want_libs || $want_libnames || $want_libfiles) {
my @libs = expand_dependencies(@components);
print join(' ', fix_library_names(@libs)), "\n" if ($want_libs);
print join(' ', @libs), "\n" if ($want_libnames);
print join(' ', fix_library_files(@libs)), "\n" if ($want_libfiles);
}
exit 0;
sub usage {
print STDERR <<__EOD__;
Usage: llvm-config <OPTION>... [<COMPONENT>...]
Get various configuration information needed to compile programs which use
LLVM. Typically called from 'configure' scripts. Examples:
llvm-config --cxxflags
llvm-config --ldflags
llvm-config --libs engine bcreader scalaropts
Options:
--version Print LLVM version.
--prefix Print the installation prefix.
--src-root Print the source root LLVM was built from.
--obj-root Print the object root used to build LLVM.
--bindir Directory containing LLVM executables.
--includedir Directory containing LLVM headers.
--libdir Directory containing LLVM libraries.
--cppflags C preprocessor flags for files that include LLVM headers.
--cflags C compiler flags for files that include LLVM headers.
--cxxflags C++ compiler flags for files that include LLVM headers.
--ldflags Print Linker flags.
--libs Libraries needed to link against LLVM components.
--libnames Bare library names for in-tree builds.
--libfiles Fully qualified library filenames for makefile depends.
--components List of all possible components.
--targets-built List of all targets currently built.
--host-target Target triple used to configure LLVM.
--build-mode Print build mode of LLVM tree (e.g. Debug or Release).
Typical components:
all All LLVM libraries (default).
backend Either a native backend or the C backend.
engine Either a native JIT or a bitcode interpreter.
__EOD__
exit(1);
}
sub fix_library_names (@) {
my @libs = @_;
my @result;
foreach my $lib (@libs) {
my ($basename) = ($lib =~ /^lib([^.]*)\.a/);
if (defined $basename) {
push @result, "-l$basename";
} else {
push @result, "$LIBDIR/$lib";
}
}
return @result;
}
sub fix_library_files(@) {
my @libs = @_;
my @result;
foreach my $lib (@libs) {
push @result, "$LIBDIR/$lib";
}
return @result;
}
sub load_dependencies;
sub build_name_map;
sub have_native_backend;
sub find_best_engine;
sub expand_names (@);
sub find_all_required_sets (@);
sub find_all_required_sets_helper ($$@);
my @SETS;
my %LIB_TO_SET_MAP; my %SET_DEPS; my %NAME_MAP;
my $DEPENDENCIES_LOADED = 0;
sub expand_dependencies (@) {
my @libs = @_;
load_dependencies;
my @required_sets = find_all_required_sets(expand_names(@libs));
my @sorted_sets = topologically_sort_sets(@required_sets);
my @result;
foreach my $set (@sorted_sets) { push @result, @{$set}; }
return @result;
}
sub load_dependencies {
return if $DEPENDENCIES_LOADED;
$DEPENDENCIES_LOADED = 1;
while (<DATA>) {
my ($libs, $deps) = /^\s*([^:]+):\s*(.*)\s*$/;
die "Malformed dependency data" unless defined $deps;
my @libs = split(' ', $libs);
my @deps = split(' ', $deps);
my $set = \@libs;
push @SETS, $set;
foreach my $lib (@libs) { $LIB_TO_SET_MAP{$lib} = $set; }
$SET_DEPS{$set} = \@deps;
}
build_name_map;
}
sub build_name_map {
foreach my $set (@SETS) {
foreach my $lib (sort @$set) {
my $short_name = $lib;
$short_name =~ s/^(lib)?LLVM([^.]*)\..*$/$2/;
$short_name =~ tr/A-Z/a-z/;
$NAME_MAP{$short_name} = [$lib];
}
}
foreach my $target (@TARGETS_BUILT) {
if (defined $NAME_MAP{$target.'asmprinter'}) {
$NAME_MAP{$target} = [$target.'info',
$target.'asmprinter',
$target.'codegen']
} elsif (defined $NAME_MAP{$target.'codegen'}) {
$NAME_MAP{$target} = [$target.'info',
$target.'codegen']
} else {
$NAME_MAP{$target} = [$target.'info',
$NAME_MAP{$target}[0]]
}
if (defined $NAME_MAP{$target.'asmparser'}) {
push @{$NAME_MAP{$target}},$target.'asmparser'
}
if (defined $NAME_MAP{$target.'disassembler'}) {
push @{$NAME_MAP{$target}},$target.'disassembler'
}
}
$NAME_MAP{'native'} = have_native_backend() ? [$ARCH] : [];
$NAME_MAP{'nativecodegen'} = have_native_backend() ? [$ARCH.'codegen'] : [];
$NAME_MAP{'backend'} = have_native_backend() ? ['native'] : ['cbackend'];
$NAME_MAP{'engine'} = find_best_engine;
$NAME_MAP{'all'} = [name_map_entries]; }
sub have_native_backend {
my %BUILT;
foreach my $target (@TARGETS_BUILT) { $BUILT{$target} = 1; }
return defined $NAME_MAP{$ARCH} && defined $BUILT{$ARCH};
}
sub find_best_engine {
if (have_native_backend && $TARGET_HAS_JIT) {
return ['jit', 'native'];
} else {
return ['interpreter'];
}
}
sub name_map_entries {
load_dependencies;
return sort keys %NAME_MAP;
}
sub expand_names (@) {
my @names = @_;
my @result;
foreach my $name (@names) {
if (defined $LIB_TO_SET_MAP{$name}) {
push @result, $name;
} elsif (defined $NAME_MAP{$name}) {
push @result, expand_names(@{$NAME_MAP{$name}});
} else {
print STDERR "llvm-config: unknown component name: $name\n";
exit(1);
}
}
return @result;
}
sub find_all_required_sets (@) {
my @libs = @_;
my %sets_added;
my @result;
find_all_required_sets_helper(\%sets_added, \@result, @libs);
return @result;
}
sub find_all_required_sets_helper ($$@) {
my ($sets_added, $result, @libs) = @_;
foreach my $lib (@libs) {
my $set = $LIB_TO_SET_MAP{$lib};
next if defined $$sets_added{$set};
$$sets_added{$set} = 1;
push @$result, $set;
find_all_required_sets_helper($sets_added, $result, @{$SET_DEPS{$set}});
}
}
sub print_sets ($@) {
my ($label, @sets) = @_;
my @output;
foreach my $set (@sets) { push @output, join(',', @$set); }
print "$label: ", join(';', @output), "\n";
}
sub has_lib_been_added ($$) {
my ($added, $lib) = @_;
return defined $$added{$LIB_TO_SET_MAP{$lib}};
}
sub have_all_deps_been_added ($$) {
my ($added, $set) = @_;
foreach my $lib (@{$SET_DEPS{$set}}) {
return 0 unless has_lib_been_added($added, $lib);
}
return 1;
}
sub topologically_sort_sets (@) {
my @sets = @_;
my %added;
my @result;
SCAN: while (@sets) { for (my $i = 0; $i < @sets; ++$i) {
my $set = $sets[$i];
if (have_all_deps_been_added(\%added, $set)) {
push @result, $set;
$added{$set} = 1;
splice(@sets, $i, 1);
next SCAN; }
}
die "Can't find a library with no dependencies";
}
return reverse(@result);
}
__END__