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package ExtUtils::CBuilder::Base;
use strict;
use warnings;
use File::Spec;
use File::Basename;
use Cwd ();
use Config;
use Text::ParseWords;
use IPC::Cmd qw(can_run);
use File::Temp qw(tempfile);
our $VERSION = '0.280238'; # VERSION
# More details about C/C++ compilers:
# http://developers.sun.com/sunstudio/documentation/product/compiler.jsp
# http://gcc.gnu.org/
# http://publib.boulder.ibm.com/infocenter/comphelp/v101v121/index.jsp
# http://msdn.microsoft.com/en-us/vstudio/default.aspx
my %cc2cxx = (
# first line order is important to support wrappers like in pkgsrc
cc => [ 'c++', 'CC', 'aCC', 'cxx', ], # Sun Studio, HP ANSI C/C++ Compilers
gcc => [ 'g++' ], # GNU Compiler Collection
xlc => [ 'xlC' ], # IBM C/C++ Set, xlc without thread-safety
xlc_r => [ 'xlC_r' ], # IBM C/C++ Set, xlc with thread-safety
cl => [ 'cl' ], # Microsoft Visual Studio
);
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};
}
$self->{config}{cc} = $ENV{CC} if defined $ENV{CC};
$self->{config}{ccflags} = join(" ", $self->{config}{ccflags}, $ENV{CFLAGS})
if defined $ENV{CFLAGS};
$self->{config}{cxx} = $ENV{CXX} if defined $ENV{CXX};
$self->{config}{cxxflags} = $ENV{CXXFLAGS} if defined $ENV{CXXFLAGS};
$self->{config}{ld} = $ENV{LD} if defined $ENV{LD};
$self->{config}{ldflags} = join(" ", $self->{config}{ldflags}, $ENV{LDFLAGS})
if defined $ENV{LDFLAGS};
unless ( exists $self->{config}{cxx} ) {
my ($ccbase, $ccpath, $ccsfx ) = fileparse($self->{config}{cc}, qr/\.[^.]*/);
## If the path is just "cc", fileparse returns $ccpath as "./"
$ccpath = "" if $self->{config}{cc} =~ /^\Q$ccbase$ccsfx\E$/;
foreach my $cxx (@{$cc2cxx{$ccbase}}) {
my $cxx1 = File::Spec->catfile( $ccpath, $cxx . $ccsfx);
if( can_run( $cxx1 ) ) {
$self->{config}{cxx} = $cxx1;
last;
}
my $cxx2 = $cxx . $ccsfx;
if( can_run( $cxx2 ) ) {
$self->{config}{cxx} = $cxx2;
last;
}
if( can_run( $cxx ) ) {
$self->{config}{cxx} = $cxx;
last;
}
}
unless ( exists $self->{config}{cxx} ) {
$self->{config}{cxx} = $self->{config}{cc};
my $cflags = $self->{config}{ccflags};
$self->{config}{cxxflags} = '-x c++';
$self->{config}{cxxflags} .= " $cflags" if defined $cflags;
}
}
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); # XXX how about using IPC::Cmd::can_run here?
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 get_config {
return %{ $_[0]->{config} };
}
sub object_file {
my ($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{$_}", sort keys %args;
}
sub compile {
my ($self, %args) = @_;
die "Missing 'source' argument to compile()" unless defined $args{source};
my $cf = $self->{config}; # For convenience
my $object_file = $args{object_file}
? $args{object_file}
: $self->object_file($args{source});
my $include_dirs_ref =
(exists($args{include_dirs}) && ref($args{include_dirs}) ne "ARRAY")
? [ $args{include_dirs} ]
: $args{include_dirs};
my @include_dirs = $self->arg_include_dirs(
@{ $include_dirs_ref || [] },
$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 = $self->split_like_shell($args{'C++'} ? $cf->{cxxflags} : $cf->{ccflags});
my @optimize = $self->split_like_shell($cf->{optimize});
my @flags = (
@include_dirs,
@defines,
@cccdlflags,
@extra_compiler_flags,
$self->arg_nolink,
@ccflags,
@optimize,
$self->arg_object_file($object_file),
);
my @cc = $self->split_like_shell($args{'C++'} ? $cf->{cxx} : $cf->{cc});
$self->do_system(@cc, @flags, $args{source})
or die "error building $object_file from '$args{source}'";
return $object_file;
}
sub have_compiler {
my ($self, $is_cplusplus) = @_;
my $have_compiler_flag = $is_cplusplus ? "have_cxx" : "have_cc";
my $suffix = $is_cplusplus ? ".cc" : ".c";
return $self->{$have_compiler_flag} if defined $self->{$have_compiler_flag};
my $result;
my $attempts = 3;
# tmpdir has issues for some people so fall back to current dir
# don't clobber existing files (rare, but possible)
my ( $FH, $tmpfile ) = tempfile( "compilet-XXXXX", SUFFIX => $suffix );
binmode $FH;
if ( $is_cplusplus ) {
print $FH "class Bogus { public: int boot_compilet() { return 1; } };\n";
}
else {
print $FH "int boot_compilet() { return 1; }\n";
}
close $FH;
my ($obj_file, @lib_files);
eval {
local $^W = 0;
local $self->{quiet} = 1;
$obj_file = $self->compile('C++' => $is_cplusplus, source => $tmpfile);
@lib_files = $self->link(objects => $obj_file, module_name => 'compilet');
};
$result = $@ ? 0 : 1;
foreach (grep defined, $tmpfile, $obj_file, @lib_files) {
1 while unlink;
}
return $self->{$have_compiler_flag} = $result;
}
sub have_cplusplus {
push @_, 1;
goto &have_compiler;
}
sub lib_file {
my ($self, $dl_file, %args) = @_;
$dl_file =~ s/\.[^.]+$//;
$dl_file =~ tr/"//d;
if (defined $args{module_name} and length $args{module_name}) {
# Need to create with the same name as DynaLoader will load with.
require DynaLoader;
if (defined &DynaLoader::mod2fname) {
my $lib = DynaLoader::mod2fname([split /::/, $args{module_name}]);
my ($dev, $lib_dir, undef) = File::Spec->splitpath($dl_file);
$dl_file = File::Spec->catpath($dev, $lib_dir, $lib);
}
}
$dl_file .= ".$self->{config}{dlext}";
return $dl_file;
}
sub exe_file {
my ($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) = @_;
my ($dl_file_out, $mksymlists_args) = _prepare_mksymlists_args(\%args);
require ExtUtils::Mksymlists;
# dl. abbrev for dynamic library
ExtUtils::Mksymlists::Mksymlists( %{ $mksymlists_args } );
# Mksymlists will create one of these files
return grep -e, map "$dl_file_out.$_", qw(ext def opt);
}
sub _prepare_mksymlists_args {
my $args = shift;
($args->{dl_file} = $args->{dl_name}) =~ s/.*::// unless $args->{dl_file};
my %mksymlists_args = (
DL_VARS => $args->{dl_vars} || [],
DL_FUNCS => $args->{dl_funcs} || {},
FUNCLIST => $args->{dl_func_list} || [],
IMPORTS => $args->{dl_imports} || {},
NAME => $args->{dl_name}, # Name of the Perl module
DLBASE => $args->{dl_base}, # Basename of DLL file
FILE => $args->{dl_file}, # Dir + Basename of symlist file
VERSION => (defined $args->{dl_version} ? $args->{dl_version} : '0.0'),
);
return ($args->{dl_file}, \%mksymlists_args);
}
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], %args);
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) : $out;
}
sub quote_literal {
my ($self, $string) = @_;
if (length $string && $string !~ /[^a-zA-Z0-9,._+@%\/-]/) {
return $string;
}
$string =~ s{'}{'\\''}g;
return "'$string'";
}
sub do_system {
my ($self, @cmd) = @_;
if (!$self->{quiet}) {
my $full = join ' ', map $self->quote_literal($_), @cmd;
print $full . "\n";
}
return !system(@cmd);
}
sub split_like_shell {
my ($self, $string) = @_;
return () unless defined($string);
return @$string if UNIVERSAL::isa($string, 'ARRAY');
$string =~ s/^\s+|\s+$//g;
return () unless length($string);
# Text::ParseWords replaces all 'escaped' characters with themselves, which completely
# breaks paths under windows. As such, we forcibly replace backwards slashes with forward
# slashes on windows.
$string =~ s@\\@/@g if $^O eq 'MSWin32';
return Text::ParseWords::shellwords($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 $dir = File::Spec->curdir;
# Try up to 5 levels upwards
for (0..10) {
if (
-f File::Spec->catfile($dir,"config_h.SH")
&&
-f File::Spec->catfile($dir,"perl.h")
&&
-f File::Spec->catfile($dir,"lib","Exporter.pm")
) {
return Cwd::realpath( $dir );
}
$dir = File::Spec->catdir($dir, $Updir);
}
warn "PERL_CORE is set but I can't find your perl source!\n";
return ''; # return empty string if $ENV{PERL_CORE} but can't find dir ???
}
# 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 $self = shift;
local($., $@, $!, $^E, $?);
$self->cleanup();
}
1;
# vim: ts=2 sw=2 et: