use ExtUtils::MakeMaker;
use Config;
+use File::Spec;
+
+sub validate_exe {
+ my ($name, $preferred_path) = @_;
+
+ my (@candidates, @args);
+ if (File::Spec->file_name_is_absolute($name)) {
+ # No need to look for args if the name is absolute.
+ @candidates = $name;
+ } else {
+ my @path;
+ if (defined $preferred_path) {
+ @path = ($preferred_path, grep { $_ ne $preferred_path } File::Spec->path);
+ } else {
+ @path = File::Spec->path;
+ }
-BEGIN {
- local $@;
- eval { require File::Spec; 1 } or die 'OS unsupported';
-}
+ (my $base, @args) = split ' ', $name;
+ for my $path_entry (@path) {
+ my ($vol, $dir, $file) = File::Spec->splitpath($path_entry, 1);
+ next if defined $file and length $file;
+ push @candidates, File::Spec->catpath($vol, $dir, $base);
+ }
+ }
-my $cc;
-for (@ARGV) {
- if (/^CC=(.*)/) {
- $cc = $1;
- last;
+ for my $path (@candidates) {
+ my $command = MM->maybe_command($path);
+ if (defined $command) {
+ $command .= " @args" if @args;
+ return $command;
+ }
}
+
+ return;
}
-if (defined $cc) {
- print "Forcing the use of $cc as the C compiler.\n";
-} else {
- # Inspired from Module::Install::Can
- print "Checking for a valid C compiler in the PATH... ";
- my @ccs = ($Config{cc});
- unshift @ccs, $ENV{CC} if $ENV{CC};
-CC:
- for my $c (@ccs) {
- for my $dir (split /$Config{path_sep}/, $ENV{PATH}) {
- my $abs = File::Spec->catfile($dir, $c);
- if (-x $abs or MM->maybe_command($abs)) {
- $cc = $c;
- print $cc, "\n";
- last CC;
- }
+
+sub check_exe {
+ my (%args) = @_;
+
+ my $desc = delete $args{desc};
+ my $arg_var = delete $args{arg_var};
+ my $tries = delete $args{try};
+ my $preferred_path = delete $args{preferred_path};
+
+ my $exe;
+
+ for (@ARGV) {
+ if (/^\Q$arg_var\E=(.*)/) {
+ $exe = validate_exe($1, $preferred_path);
+ last if defined $exe;
}
}
- print "none\n" unless defined $cc;
+
+ if (defined $exe) {
+ print "Forcing the use of $exe as the $desc.\n";
+ } else {
+ print "Checking for a valid $desc in the PATH... ";
+ for my $try (@$tries) {
+ next unless defined $try;
+ $exe = validate_exe($try, $preferred_path);
+ last if defined $exe;
+ }
+ if (defined $exe) {
+ print "$exe\n";
+ } else {
+ print "none\n";
+ }
+ }
+
+ return $exe;
}
-my @C;
-push @C, 'Util.c' if defined $cc;
+sub filter_argv {
+ my ($var, $code) = @_;
-my @DEFINES;
+ my $ret;
+
+ for my $i (0 .. $#ARGV) {
+ my $arg = $ARGV[$i];
+ if ($arg =~ /^\Q$var\E=(.*)/) {
+ my $val = $1;
+ $ret = $code->($val);
+ $ARGV[$i] = undef;
+ last if $ret;
+ }
+ }
+
+ @ARGV = grep defined, @ARGV;
+
+ return $ret;
+}
+
+my ($cc, $ld);
+my $pp = filter_argv PP => sub {
+ my ($val) = @_;
+ return (do { no warnings 'numeric'; int $val } or $val =~ /^(?:y|yes)$/i)
+ ? 1 : 0;
+};
+if ($pp) {
+ print "Forcing the pure-Perl implementation from the arguments passed to Makefile.PL.\n";
+} else {
+ $cc = check_exe(
+ desc => 'C compiler',
+ arg_var => 'CC',
+ try => [ $Config{cc}, $ENV{CC}, 'cc' ],
+ );
+ if (defined $cc) {
+ my ($vol, $dir, $file) = File::Spec->splitpath($cc);
+ my $preferred_path = File::Spec->catpath($vol, $dir, '');
+ $ld = check_exe(
+ desc => 'linker',
+ arg_var => 'LD',
+ try => [ $Config{ld}, $ENV{LD}, 'ld' ],
+ preferred_path => $preferred_path,
+ );
+ }
+}
sub is_little_endian {
my $order = $Config{byteorder};
return $order eq (join '', 1 .. $len);
}
-my $unit = { bits => 8, size => 1 };
-if (not is_little_endian()) {
- print "Forcing unit size of 8 on non-little-endian systems.\n";
-} else {
- print "Checking unit size in bits... ";
- my $align = $Config{alignbytes} || 1;
- my @bits = (8, 16, 32, 64);
- for my $bits (@bits) {
- my $size = $Config{"u${bits}size"};
- next unless $size;
- $unit = { bits => $bits, size => $size } if $size && $size <= $align;
- }
- print $unit->{bits},
- " (actually $unit->{size} bytes for $align bytes alignment).\n";
-}
+my %PARAMS;
+my @DEFINES;
-{
- my $bits = $unit->{bits};
- push @DEFINES, '-DBV_UNIT="' . ($Config{"u${bits}type"} || "U$bits") . '"';
- push @DEFINES, "-DSVU_SIZE=$bits";
+if (defined $cc and defined $ld) {
+ $PARAMS{C} = [ 'Util.c' ];
+ $PARAMS{XS} = { 'Util.xs' => 'Util.c' };
+ $PARAMS{CC} = $cc;
+ $PARAMS{LD} = $ld;
+
+ my $type = filter_argv UNIT => sub { return $_[0] };
+ if (defined $type) {
+ print "Forcing '$type' as the unit.\n";
+ push @DEFINES, '-DBV_UNIT="' . $type . '"';
+ } else {
+ my $bits = 8;
+ if (not is_little_endian()) {
+ print "Forcing unit size of 8 on non-little-endian systems.\n";
+ } else {
+ print "Checking unit size in bits... ";
+ my $size = 1;
+ my $align = $Config{alignbytes} || 1;
+ my @units = (8, 16, 32, 64);
+ for my $unit (@units) {
+ my $unit_size = $Config{"u${unit}size"};
+ if ($unit_size and $unit_size <= $align) {
+ $bits = $unit;
+ $size = $unit_size;
+ }
+ }
+ print "$bits (actually $size bytes for $align bytes alignment).\n";
+ }
+ push @DEFINES, '-DBV_UNIT="' . ($Config{"u${bits}type"} || "U$bits") . '"';
+ push @DEFINES, "-DSVU_SIZE=$bits";
+ }
+} else {
+ $PARAMS{C} = [ ];
+ $PARAMS{XS} = { };
+ $PARAMS{OBJECT} = '';
+ print "Falling back to the pure-Perl implementation.\n";
}
-@DEFINES = (DEFINE => join ' ', @DEFINES) if @DEFINES;
+$PARAMS{DEFINE} = join ' ', @DEFINES if @DEFINES;
my $dist = 'Scalar-Vec-Util';
VERSION_FROM => $file,
ABSTRACT_FROM => $file,
PL_FILES => {},
- C => \@C,
- @DEFINES,
BUILD_REQUIRES => \%BUILD_REQUIRES,
PREREQ_PM => \%PREREQ_PM,
MIN_PERL_VERSION => '5.006',
clean => {
FILES => "$dist-* *.gcov *.gcda *.gcno cover_db Debian_CPANTS.txt*"
},
+ %PARAMS,
);
1;
projects / perl / modules / Scalar-Vec-Util.git / blobdiff