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inc/Module/Install/XSUtil.pm  view on Meta::CPAN

    my $tmpfile = File::Temp->new(SUFFIX => '.c');

    $tmpfile->print(<<'C99');
// include a C99 header
#include <stdbool.h>
inline // a C99 keyword with C99 style comments
int test_c99() {
    int i = 0;
    i++;
    int j = i - 1; // another C99 feature: declaration after statement
    return j;
}
C99

    $tmpfile->close();

    system "$Config{cc} -c " . $tmpfile->filename;

    (my $objname = File::Basename::basename($tmpfile->filename)) =~ s/\Q.c\E$/$Config{_o}/;
    unlink $objname or warn "Cannot unlink $objname (ignored): $!";

    return $? == 0;
}

sub requires_c99 {
    my($self) = @_;
    if(!$self->c99_available) {
        warn "This distribution requires a C99 compiler, but $Config{cc} seems not to support C99, stopped.\n";
        exit;
    }
    $self->_xs_initialize();
    $UseC99 = 1;
    return;
}

sub requires_cplusplus {
    my($self) = @_;
    if(!$self->cc_available) {
        warn "This distribution requires a C++ compiler, but $Config{cc} seems not to support C++, stopped.\n";
        exit;
    }
    $self->_xs_initialize();
    $UseCplusplus = 1;
    return;
}

sub cc_append_to_inc{
    my($self, @dirs) = @_;

    $self->_xs_initialize();

    for my $dir(@dirs){
        unless(-d $dir){
            warn("'$dir' not found: $!\n");
        }

        _verbose "inc: -I$dir" if _VERBOSE;
    }

    my $mm    = $self->makemaker_args;
    my $paths = join q{ }, map{ s{\\}{\\\\}g; qq{"-I$_"} } @dirs;

    if($mm->{INC}){
        $mm->{INC} .=  q{ } . $paths;
    }
    else{
        $mm->{INC}  = $paths;
    }
    return;
}

sub cc_libs {
    my ($self, @libs) = @_;

    @libs = map{
        my($name, $dir) = ref($_) eq 'ARRAY' ? @{$_} : ($_, undef);
        my $lib;
        if(defined $dir) {
            $lib = ($dir =~ /^-/ ? qq{$dir } : qq{-L$dir });
        }
        else {
            $lib = '';
        }
        $lib .= ($name =~ /^-/ ? qq{$name} : qq{-l$name});
        _verbose "libs: $lib" if _VERBOSE;
        $lib;
    } @libs;

    $self->cc_append_to_libs( @libs );
}

sub cc_append_to_libs{
    my($self, @libs) = @_;

    $self->_xs_initialize();

    return unless @libs;

    my $libs = join q{ }, @libs;

    my $mm = $self->makemaker_args;

    if ($mm->{LIBS}){
        $mm->{LIBS} .= q{ } . $libs;
    }
    else{
        $mm->{LIBS} = $libs;
    }
    return $libs;
}

sub cc_assert_lib {
    my ($self, @dcl_args) = @_;

    if ( ! $self->{xsu_loaded_checklib} ) {
        my $loaded_lib = 0;
        foreach my $checklib (qw(inc::Devel::CheckLib Devel::CheckLib)) {
            eval "use $checklib 0.4";
            if (!$@) {
                $loaded_lib = 1;
                last;
            }
        }

        if (! $loaded_lib) {
            warn "Devel::CheckLib not found in inc/ nor \@INC";
            exit 0;
        }

        $self->{xsu_loaded_checklib}++;
        $self->configure_requires( "Devel::CheckLib" => "0.4" );
        $self->build_requires( "Devel::CheckLib" => "0.4" );
    }

    Devel::CheckLib::check_lib_or_exit(@dcl_args);

inc/Module/Install/XSUtil.pm  view on Meta::CPAN

                }
                elsif($File::Find::name =~ $rx_dll){
                    # XXX: hack for Cygwin
                    my $mm = $self->makemaker_args;
                    $mm->{macro}->{PERL_ARCHIVE_AFTER} ||= '';
                    $mm->{macro}->{PERL_ARCHIVE_AFTER}  .= ' ' . $File::Find::name;
                }
            }, @dirs);

            if($n_inc != scalar @inc){
                last SCAN_INC;
            }
        }
    }

    my %uniq = ();
    $self->cc_append_to_inc (grep{ !$uniq{ $_ }++ } @inc);

    %uniq = ();
    $self->cc_libs(grep{ !$uniq{ $_->[0] }++ } @libs);

    return %added;
}

sub cc_src_paths{
    my($self, @dirs) = @_;

    $self->_xs_initialize();

    return unless @dirs;

    my $mm     = $self->makemaker_args;

    my $XS_ref = $mm->{XS} ||= {};
    my $C_ref  = $mm->{C}  ||= [];

    my $_obj   = $Config{_o};

    my @src_files;
    find(sub{
        if(/ \. (?: xs | c (?: c | pp | xx )? ) \z/xmsi){ # *.{xs, c, cc, cpp, cxx}
            push @src_files, $File::Find::name;
        }
    }, @dirs);

    my $xs_to = $UseCplusplus ? '.cpp' : '.c';
    foreach my $src_file(@src_files){
        my $c = $src_file;
        if($c =~ s/ \.xs \z/$xs_to/xms){
            $XS_ref->{$src_file} = $c;

            _verbose "xs: $src_file" if _VERBOSE;
        }
        else{
            _verbose "c: $c" if _VERBOSE;
        }

        push @{$C_ref}, $c unless grep{ $_ eq $c } @{$C_ref};
    }

    $self->clean_files(map{
        File::Spec->catfile($_, '*.gcov'),
        File::Spec->catfile($_, '*.gcda'),
        File::Spec->catfile($_, '*.gcno'),
    } @dirs);
    $self->cc_append_to_inc('.');

    return;
}

sub cc_include_paths{
    my($self, @dirs) = @_;

    $self->_xs_initialize();

    push @{ $self->{xsu_include_paths} ||= []}, @dirs;

    my $h_map = $self->{xsu_header_map} ||= {};

    foreach my $dir(@dirs){
        my $prefix = quotemeta( File::Spec->catfile($dir, '') );
        find(sub{
            return unless / \.h(?:pp)? \z/xms;

            (my $h_file = $File::Find::name) =~ s/ \A $prefix //xms;
            $h_map->{$h_file} = $File::Find::name;
        }, $dir);
    }

    $self->cc_append_to_inc(@dirs);

    return;
}

sub install_headers{
    my $self    = shift;
    my $h_files;
    if(@_ == 0){
        $h_files = $self->{xsu_header_map} or die "install_headers: cc_include_paths not specified.\n";
    }
    elsif(@_ == 1 && ref($_[0]) eq 'HASH'){
        $h_files = $_[0];
    }
    else{
        $h_files = +{ map{ $_ => undef } @_ };
    }

    $self->_xs_initialize();

    my @not_found;
    my $h_map = $self->{xsu_header_map} || {};

    while(my($ident, $path) = each %{$h_files}){
        $path ||= $h_map->{$ident} || File::Spec->join('.', $ident);
        $path   = File::Spec->canonpath($path);

        unless($path && -e $path){
            push @not_found, $ident;
            next;
        }

        $ToInstall{$path} = File::Spec->join('$(INST_ARCHAUTODIR)', $ident);

        _verbose "install: $path as $ident" if _VERBOSE;
        my @funcs = $self->_extract_functions_from_header_file($path);
        if(@funcs){
            $self->cc_append_to_funclist(@funcs);
        }
    }

    if(@not_found){
        die "Header file(s) not found: @not_found\n";
    }

    return;
}

my $home_directory;

sub _extract_functions_from_header_file{
    my($self, $h_file) = @_;

    my @functions;

    ($home_directory) = <~> unless defined $home_directory;

    # get header file contents through cpp(1)
    my $contents = do {
        my $mm = $self->makemaker_args;

        my $cppflags = q{"-I}. File::Spec->join($Config{archlib}, 'CORE') . q{"};
        $cppflags    =~ s/~/$home_directory/g;

        $cppflags   .= ' ' . $mm->{INC} if $mm->{INC};

        $cppflags   .= ' ' . ($mm->{CCFLAGS} || $Config{ccflags});
        $cppflags   .= ' ' . $mm->{DEFINE} if $mm->{DEFINE};

        my $add_include = _is_msvc() ? '-FI' : '-include';
        $cppflags   .= ' ' . join ' ',
            map{ qq{$add_include "$_"} } qw(EXTERN.h perl.h XSUB.h);

        my $cppcmd = qq{$Config{cpprun} $cppflags $h_file};
        # remove all the -arch options to workaround gcc errors:
        #       "-E, -S, -save-temps and -M options are not allowed
        #        with multiple -arch flags"
        $cppcmd =~ s/ -arch \s* \S+ //xmsg;
        _verbose("extract functions from: $cppcmd") if _VERBOSE;
        `$cppcmd`;
    };

    unless(defined $contents){
        die "Cannot call C pre-processor ($Config{cpprun}): $! ($?)";
    }

    # remove other include file contents
    my $chfile = q/\# (?:line)? \s+ \d+ /;
    $contents =~ s{
        ^$chfile  \s+ (?!"\Q$h_file\E")
        .*?
        ^(?= $chfile)
    }{}xmsig;

    if(_VERBOSE){
        local *H;
        open H, "> $h_file.out"
            and print H $contents
            and close H;
    }

    while($contents =~ m{
            ([^\\;\s]+                # type
            \s+
            ([a-zA-Z_][a-zA-Z0-9_]*)  # function name
            \s*
            \( [^;#]* \)              # argument list
            [\w\s\(\)]*               # attributes or something
            ;)                        # end of declaration
        }xmsg){
            my $decl = $1;
            my $name = $2;

            next if $decl =~ /\b typedef \b/xms;
            next if $name =~ /^_/xms; # skip something private

            push @functions, $name;

            if(_VERBOSE){
                $decl =~ tr/\n\r\t / /s;
                $decl =~ s/ (\Q$name\E) /<$name>/xms;
                _verbose("decl: $decl");
            }
    }

    return @functions;
}


sub cc_append_to_funclist{
    my($self, @functions) = @_;