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