package ExtUtils::CBuilder::Base;
use strict;
use File::Spec;
use File::Basename;
use Config;
use Text::ParseWords;
use vars qw($VERSION);
$VERSION = '0.12';
sub new {
my $class = shift;
my $self = bless {@_}, $class;
$self->{properties}{perl} = $class->find_perl_interpreter
or warn "Warning: Can't locate your perl binary";
while (my ($k,$v) = each %Config) {
$self->{config}{$k} = $v unless exists $self->{config}{$k};
}
return $self;
}
sub find_perl_interpreter {
my $perl;
File::Spec->file_name_is_absolute($perl = $^X)
or -f ($perl = $Config::Config{perlpath})
or ($perl = $^X);
return $perl;
}
sub add_to_cleanup {
my $self = shift;
foreach (@_) {
$self->{files_to_clean}{$_} = 1;
}
}
sub cleanup {
my $self = shift;
foreach my $file (keys %{$self->{files_to_clean}}) {
unlink $file;
}
}
sub object_file {
my ($self, $filename) = @_;
# File name, minus the suffix
(my $file_base = $filename) =~ s/\.[^.]+$//;
return "$file_base$self->{config}{obj_ext}";
}
sub arg_include_dirs {
my $self = shift;
return map {"-I$_"} @_;
}
sub arg_nolink { '-c' }
sub arg_object_file {
my ($self, $file) = @_;
return ('-o', $file);
}
sub arg_share_object_file {
my ($self, $file) = @_;
return ($self->split_like_shell($self->{config}{lddlflags}), '-o', $file);
}
sub arg_exec_file {
my ($self, $file) = @_;
return ('-o', $file);
}
sub arg_defines {
my ($self, %args) = @_;
return map "-D$_=$args{$_}", keys %args;
}
sub compile {
my ($self, %args) = @_;
die "Missing 'source' argument to compile()" unless defined $args{source};
my $cf = $self->{config}; # For convenience
$args{object_file} ||= $self->object_file($args{source});
my @include_dirs = $self->arg_include_dirs
(@{$args{include_dirs} || []},
$self->perl_inc());
my @defines = $self->arg_defines( %{$args{defines} || {}} );
my @extra_compiler_flags = $self->split_like_shell($args{extra_compiler_flags});
my @cccdlflags = $self->split_like_shell($cf->{cccdlflags});
my @ccflags = $self->split_like_shell($cf->{ccflags});
my @optimize = $self->split_like_shell($cf->{optimize});
my @flags = (@include_dirs, @defines, @cccdlflags, @extra_compiler_flags,
$self->arg_nolink,
@ccflags, @optimize,
$self->arg_object_file($args{object_file}),
);
my @cc = $self->split_like_shell($cf->{cc});
$self->do_system(@cc, @flags, $args{source})
or die "error building $args{object_file} from '$args{source}'";
return $args{object_file};
}
sub have_compiler {
my ($self) = @_;
return $self->{have_compiler} if defined $self->{have_compiler};
my $tmpfile = File::Spec->catfile(File::Spec->tmpdir, 'compilet.c');
{
local *FH;
open FH, "> $tmpfile" or die "Can't create $tmpfile: $!";
print FH "int boot_compilet() { return 1; }\n";
close FH;
}
my ($obj_file, @lib_files);
eval {
$obj_file = $self->compile(source => $tmpfile);
@lib_files = $self->link(objects => $obj_file, module_name => 'compilet');
};
warn $@ if $@;
my $result = $self->{have_compiler} = $@ ? 0 : 1;
foreach (grep defined, $tmpfile, $obj_file, @lib_files) {
1 while unlink;
}
return $result;
}
sub lib_file {
my ($self, $dl_file) = @_;
$dl_file =~ s/\.[^.]+$//;
$dl_file =~ tr/"//d;
return "$dl_file.$self->{config}{dlext}";
}
sub exe_file {
my ($self, $dl_file) = @_;
$dl_file =~ s/\.[^.]+$//;
$dl_file =~ tr/"//d;
return "$dl_file$self->{config}{_exe}";
}
sub need_prelink { 0 }
sub extra_link_args_after_prelink { return }
sub prelink {
my ($self, %args) = @_;
($args{dl_file} = $args{dl_name}) =~ s/.*::// unless $args{dl_file};
require ExtUtils::Mksymlists;
ExtUtils::Mksymlists::Mksymlists( # dl. abbrev for dynamic library
DL_VARS => $args{dl_vars} || [],
DL_FUNCS => $args{dl_funcs} || {},
FUNCLIST => $args{dl_func_list} || [],
IMPORTS => $args{dl_imports} || {},
NAME => $args{dl_name},
DLBASE => $args{dl_base},
FILE => $args{dl_file},
VERSION => (defined $args{dl_version} ? $args{dl_version} : '0.0'),
);
# Mksymlists will create one of these files
return grep -e, map "$args{dl_file}.$_", qw(ext def opt);
}
sub link {
my ($self, %args) = @_;
return $self->_do_link('lib_file', lddl => 1, %args);
}
sub link_executable {
my ($self, %args) = @_;
return $self->_do_link('exe_file', lddl => 0, %args);
}
sub _do_link {
my ($self, $type, %args) = @_;
my $cf = $self->{config}; # For convenience
my $objects = delete $args{objects};
$objects = [$objects] unless ref $objects;
my $out = $args{$type} || $self->$type($objects->[0]);
my @temp_files;
@temp_files =
$self->prelink(%args,
dl_name => $args{module_name}) if $args{lddl} && $self->need_prelink;
my @linker_flags = ($self->split_like_shell($args{extra_linker_flags}),
$self->extra_link_args_after_prelink(%args, dl_name => $args{module_name},
prelink_res => \@temp_files));
my @output = $args{lddl} ? $self->arg_share_object_file($out) : $self->arg_exec_file($out);
my @shrp = $self->split_like_shell($cf->{shrpenv});
my @ld = $self->split_like_shell($cf->{ld});
$self->do_system(@shrp, @ld, @output, @$objects, @linker_flags)
or die "error building $out from @$objects";
return wantarray ? ($out, @temp_files) : $out;
}
sub do_system {
my ($self, @cmd) = @_;
print "@cmd\n" if !$self->{quiet};
return !system(@cmd);
}
sub split_like_shell {
my ($self, $string) = @_;
return () unless defined($string);
return @$string if UNIVERSAL::isa($string, 'ARRAY');
$string =~ s/^\s+|\s+$//g;
return () unless length($string);
return Text::ParseWords::shellwords($string);
}
# if building perl, perl's main source directory
sub perl_src {
# N.B. makemaker actually searches regardless of PERL_CORE, but
# only squawks at not finding it if PERL_CORE is set
return unless $ENV{PERL_CORE};
my $Updir = File::Spec->updir;
my $dir = $Updir;
# Try up to 5 levels upwards
for (1..5) {
if (
-f File::Spec->catfile($dir,"config_h.SH")
&&
-f File::Spec->catfile($dir,"perl.h")
&&
-f File::Spec->catfile($dir,"lib","Exporter.pm")
) {
return $dir;
}
$dir = File::Spec->catdir($dir, $Updir);
}
warn "PERL_CORE is set but I can't find your perl source!\n";
return;
}
# directory of perl's include files
sub perl_inc {
my $self = shift;
$self->perl_src() || File::Spec->catdir($self->{config}{archlibexp},"CORE");
}
sub DESTROY {
my $self = shift;
$self->cleanup();
}
1;