From: Dave Rolsky <autarch@urth.org>
Date: Fri, 8 Aug 2008 21:11:12 +0000 (+0000)
Subject: Switched to EUMM with compiler detection (from Params::Validate, which
X-Git-Tag: 0_64_01~81
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=f125b31ebf5eead9cb712aad3ea4a29f7ce3d611;p=gitmo%2FClass-MOP.git

Switched to EUMM with compiler detection (from Params::Validate, which
got it from Scalar-List-Utils).
---

diff --git a/Changes b/Changes
index e1b863c..ba3fc1e 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,11 @@
 Revision history for Perl extension Class-MOP.
 
 0.65
+    * Makefile.PL
+      - We now check to see if you have a compiler. If you don't, the
+        module installs without some XS bits, but will work the same
+        as with XS. This should make it easier to install on platforms
+        without a compiler (like Windows). (Dave Rolsky)
 
 0.64 Sun August 3, 2008
     * Class::MOP::Immutable
diff --git a/MANIFEST b/MANIFEST
index 6cd322a..39862d0 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -7,14 +7,6 @@ examples/InsideOutClass.pod
 examples/InstanceCountingClass.pod
 examples/LazyClass.pod
 examples/Perl6Attribute.pod
-inc/Module/Install.pm
-inc/Module/Install/Base.pm
-inc/Module/Install/Can.pm
-inc/Module/Install/Fetch.pm
-inc/Module/Install/Makefile.pm
-inc/Module/Install/Metadata.pm
-inc/Module/Install/Win32.pm
-inc/Module/Install/WriteAll.pm
 lib/Class/MOP.pm
 lib/Class/MOP/Attribute.pm
 lib/Class/MOP/Class.pm
@@ -30,9 +22,8 @@ lib/Class/MOP/Object.pm
 lib/Class/MOP/Package.pm
 lib/metaclass.pm
 Makefile.PL
-MANIFEST
+MANIFEST			This list of files
 MANIFEST.SKIP
-META.yml
 MOP.xs
 ppport.h
 README
diff --git a/Makefile.PL b/Makefile.PL
index 3ae0fb4..cd4a289 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -1,20 +1,117 @@
+# The perl/C checking voodoo is mostly stolen from Graham Barr's
+# Scalar-List-Utils distribution.
 use strict;
 use warnings;
-use inc::Module::Install;
 
-name 'Class-MOP';
-all_from 'lib/Class/MOP.pm';
-license 'perl';
+use ExtUtils::MakeMaker;
+use Config qw(%Config);
+use File::Spec;
 
-requires 'Scalar::Util'  => '1.18';
-requires 'Sub::Name'     => '0.02';
-requires 'Sub::Identify' => '0.03';
-requires 'MRO::Compat'   => '0.05';
-requires 'Carp'          => '0';
+# If undefined, try our best, if true, require XS, if false, never do
+# XS
+my $force_xs;
 
-build_requires 'Test::More'      => '0.62';
-build_requires 'Test::Exception' => '0.21';
-build_requires 'File::Spec'      => '0';
+for (@ARGV) {
+    /^--pm/ and $force_xs = 0;
+    /^--xs/ and $force_xs = 1;
+}
 
-auto_provides;
-WriteAll();
+my $has_compiler = $force_xs;
+unless ( defined $force_xs ) {
+    $has_compiler = check_for_compiler()
+        or no_cc();
+}
+
+write_makefile();
+
+sub write_makefile {
+    my $ccflags = -d '.svn' || $ENV{MAINTAINER_MODE} ? '-Wall' : '';
+
+    WriteMakefile(
+        VERSION_FROM => 'lib/Class/MOP.pm',
+        NAME         => 'Class::MOP',
+        PREREQ_PM    => {
+            'Scalar::Util'  => '1.18',
+            'Sub::Name'     => '0.02',
+            'Sub::Identify' => '0.03',
+            'MRO::Compat'   => '0.05',
+            'Carp'          => 0,
+        },
+        CONFIGURE     => \&init,
+        CCFLAGS       => $ccflags,
+        clean         => { FILES => 'test.c test.o' },
+        ABSTRACT_FROM => 'lib/Class/MOP.pm',
+        AUTHOR        => 'Stevan Little <stevan@iinteractive.com>',
+        LICENSE       => 'perl',
+    );
+}
+
+sub no_cc {
+    print <<'EOF';
+
+ I cannot determine if you have a C compiler
+ so I will install a perl-only implementation
+
+ You can force installation of the XS version with
+
+    perl Makefile.PL --xs
+
+EOF
+}
+
+sub check_for_compiler {
+    print "Testing if you have a C compiler\n";
+
+    eval { require ExtUtils::CBuilder };
+    if ($@) {
+        return _check_for_compiler_manually();
+    }
+    else {
+        return _check_for_compiler_with_cbuilder();
+    }
+}
+
+sub _check_for_compiler_with_cbuilder {
+    my $cb = ExtUtils::CBuilder->new( quiet => 1 );
+
+    return $cb->have_compiler();
+}
+
+sub _check_for_compiler_manually {
+    unless ( open F, '>', 'test.c' ) {
+        warn
+            "Cannot write test.c, skipping test compilation and installing pure Perl version.\n";
+        return 0;
+    }
+
+    print F <<'EOF';
+int main() { return 0; }
+EOF
+
+    close F or return 0;
+
+    my $cc = $Config{cc};
+    if ( $cc =~ /cl(\.exe)?$/ ) {
+
+        # stupid stupid MSVC compiler hack tacken from version.pm's
+        # Makefile.PL
+        $cc .= ' -c';    # prevent it from calling the linker
+    }
+
+    system("$cc -o test$Config{obj_ext} test.c") and return 0;
+
+    unlink $_ for grep {-f} 'test.c', "test$Config{obj_ext}";
+
+    return 1;
+}
+
+# This is EUMM voodoo
+sub init {
+    my $hash = $_[1];
+
+    unless ($has_compiler) {
+        @{$hash}{ 'XS', 'C' } = ( {}, [] );
+    }
+
+    $hash;
+}