diff --git a/gub/commands.py b/gub/commands.py
index f867882a5..e59ce8a17 100644
--- a/gub/commands.py
+++ b/gub/commands.py
@@ -6,6 +6,7 @@
 import sys
 import traceback
 #
+from gub import build_platform
 from gub import loggedos
 from gub import misc
 from gub import octal
@@ -341,9 +342,23 @@ def execute (self, logger):
             globs.append ('no-globs-for-%(dest)s' % locals ())
 
         _v = logger.verbose_flag ()
-        cmd = 'tar -C %(root)s/%(suffix_dir)s --ignore-failed --exclude="*~"%(_v)s -zcf %(dest)s ' % locals ()
-        cmd += ' '.join (globs)
-        loggedos.system (logger, cmd)
+
+        tar_flags = [
+            '--exclude="*~"%(_v)s',
+            '-C %(root)s/%(suffix_dir)s',
+            '-c',
+            '-f %(dest)s',
+            '-z',
+        ]
+
+        # '--ignore-failed' is required to build binutils on GNU/Linux systems.
+        # Default tar on Darwin is BSD, which does not have '--ignore-failed'.
+        if 'darwin' not in build_platform.machine():
+            tar_flags.append('--ignore-failed')
+
+        tar_cmd = ' '.join(['tar'] + tar_flags + globs) % locals ()
+
+        loggedos.system (logger, tar_cmd)
 
 # FIXME
 class ForcedAutogenMagic (SerializedCommand):
diff --git a/gub/config_cache.py b/gub/config_cache.py
index 1a6ab039c..a82f1ecf4 100644
--- a/gub/config_cache.py
+++ b/gub/config_cache.py
@@ -207,11 +207,13 @@
 
 config_cache['linux-64'] = config_cache['linux-x86']
 config_cache['freebsd-64'] = config_cache['freebsd-x86']
+config_cache['darwin-64'] = config_cache['darwin-x86']
 
 config_cache['arm'] += config_cache['32']
 config_cache['cygwin'] += config_cache['32']
 config_cache['darwin-ppc'] += config_cache['32']
 config_cache['darwin-x86'] += config_cache['32']
+config_cache['darwin-64'] += config_cache['64']
 config_cache['freebsd-64'] += config_cache['64']
 config_cache['freebsd-x86'] += config_cache['32']
 config_cache['linux-64'] += config_cache['64']
diff --git a/gub/installer.py b/gub/installer.py
index 708bbdfc9..79f73d812 100644
--- a/gub/installer.py
+++ b/gub/installer.py
@@ -472,6 +472,7 @@ def get_installer (settings, *arguments):
         
         'darwin-ppc' : DarwinBundle,
         'darwin-x86' : DarwinBundle,
+        'darwin-64' : DarwinBundle,
         'freebsd-x86' : Shar,
         'freebsd4-x86' : Shar,
         'freebsd6-x86' : Shar,
diff --git a/gub/settings.py b/gub/settings.py
index 4fa7d45d7..afbeea92c 100644
--- a/gub/settings.py
+++ b/gub/settings.py
@@ -19,6 +19,7 @@
     'cygwin': 'i686-cygwin',
     'darwin-ppc': 'powerpc-apple-darwin8',
     'darwin-x86': 'i686-apple-darwin8',
+    'darwin-64': 'x86_64-apple-darwin',
 
     'freebsd4-x86': 'i686-freebsd4',
     'freebsd6-x86': 'i686-freebsd6',
diff --git a/gub/specs/bzip2.py b/gub/specs/bzip2.py
index 43f6c0e85..f0044bb3b 100644
--- a/gub/specs/bzip2.py
+++ b/gub/specs/bzip2.py
@@ -1,5 +1,6 @@
 from gub import tools
 from gub import target
+from gub import build_platform
 
 class Bzip2 (target.MakeBuild):
     source = 'http://http.debian.net/debian/pool/main/b/bzip2/bzip2_1.0.6.orig.tar.bz2'
@@ -14,9 +15,17 @@ def install (self):
 
 class Bzip2__tools (tools.MakeBuild):
     source = 'http://http.debian.net/debian/pool/main/b/bzip2/bzip2_1.0.6.orig.tar.bz2'
+    patches = []
     compile_flags = ' -f Makefile-libbz2_so'
     install_flags = (tools.MakeBuild.install_flags
                      + ' PREFIX=%(install_prefix)s')
+
+    # On darwin hosts, we need to substitute 'soname' for 'install_name'
+    if 'darwin' in build_platform.machine():
+        patches = patches + [
+            'bzip2-1.0.6-darwin-soname.patch',
+        ]
+
     def install (self):
         tools.MakeBuild.install (self)
         self.system ('cp -pv %(builddir)s/libbz2.so* %(install_prefix)s/lib')
diff --git a/gub/specs/file.py b/gub/specs/file.py
index ffe04df84..a766385aa 100644
--- a/gub/specs/file.py
+++ b/gub/specs/file.py
@@ -1,3 +1,4 @@
+from gub import build_platform
 from gub import tools
 import os
 
@@ -7,3 +8,6 @@ class File__tools (tools.AutoBuild):
             'libtool',
             'zlib',
             ]
+
+    if 'darwin' in build_platform.machine():
+        compile_command = 'DYLD_LIBRARY_PATH="%(system_prefix)s/lib" ' + tools.AutoBuild.compile_command
diff --git a/gub/specs/osx-lilypad.py b/gub/specs/osx-lilypad.py
index 3c6532b0b..24d0b6081 100644
--- a/gub/specs/osx-lilypad.py
+++ b/gub/specs/osx-lilypad.py
@@ -1,12 +1,10 @@
 from gub import build
 
 class Osx_lilypad (build.NullBuild):
-    pass
+    source = 'http://lilypond.org/downloads/gub-sources/osx-lilypad-universal/osx-lilypad-universal-0.6.3.tar.gz'
 
 class Osx_lilypad__darwin__ppc (build.NullBuild):
     # yes, we really need the old version here
     # later versions were built on OSX 10.7, which doesn't have pcc support
     source = 'http://lilypond.org/downloads/gub-sources/osx-lilypad-universal/osx-lilypad-universal-0.4.tar.gz'
 
-class Osx_lilypad__darwin__x86 (build.NullBuild):
-    source = 'http://lilypond.org/downloads/gub-sources/osx-lilypad-universal/osx-lilypad-universal-0.6.3.tar.gz'
diff --git a/gub/specs/perl-extutils-makemaker.py b/gub/specs/perl-extutils-makemaker.py
index 8703f09b6..f5440a2d7 100644
--- a/gub/specs/perl-extutils-makemaker.py
+++ b/gub/specs/perl-extutils-makemaker.py
@@ -1,5 +1,5 @@
 from gub import tools
 
 class Perl_extutils_makemaker (tools.CpanBuild):
-    source = 'http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/ExtUtils-MakeMaker-6.55_02.tar.gz'
+    source = 'https://cpan.metacpan.org/authors/id/B/BI/BINGOS/ExtUtils-MakeMaker-7.34.tar.gz'
     
diff --git a/gub/specs/perl-xml-parser.py b/gub/specs/perl-xml-parser.py
index 3a4fce3e5..89959d44a 100644
--- a/gub/specs/perl-xml-parser.py
+++ b/gub/specs/perl-xml-parser.py
@@ -1,5 +1,7 @@
 from gub import tools
 
 class Perl_xml_parser (tools.CpanBuild):
-    source = 'http://search.cpan.org/CPAN/authors/id/M/MS/MSERGEANT/XML-Parser-2.36.tar.gz'
-    dependencies = ['expat']
+    source = 'https://cpan.metacpan.org/authors/id/T/TO/TODDR/XML-Parser-2.44.tar.gz'
+    dependencies = [
+        'expat',
+    ]
diff --git a/gub/specs/perl.py b/gub/specs/perl.py
index c95f89d89..9c9c0631c 100644
--- a/gub/specs/perl.py
+++ b/gub/specs/perl.py
@@ -1,39 +1,45 @@
-import re
-#
-from gub import misc
+from gub import build_platform
 from gub import tools
 
-# And this is supposed to be one of the most compiled packages?
-# So why doesn't anyone fix configuring/compiling it?  Shees.
-class Perl__tools (tools.AutoBuild):
-    source = 'http://www.cpan.org/src/5.0/perl-5.10.0.tar.gz'
+class Perl__tools(tools.AutoBuild):
+    source = 'https://www.cpan.org/src/5.0/perl-5.28.1.tar.gz'
     srcdir_build_broken = True
-    def patch (self):
-        tools.AutoBuild.patch (self)
-        self.file_sub ([('-c (/dev/null)', r'-e \1')], '%(srcdir)s/Configure')
     configure_binary = '%(autodir)s/configure.gnu'
-# -Dcc=%(CC)s
-# -Dprefix=%(prefix_dir)s -- BOOTSTRAP
-    configure_command = misc.join_lines ('''%(configure_binary)s
- -Dprefix=%(system_prefix)s
- -Dcc='%(toolchain_prefix)sgcc %(target_gcc_flags)s'
- -Dtargetarch=%(target_architecture)s
- -Dusrinc=%(system_prefix)s/include
- -Dincpth=/
- -Dlibpth=%(system_prefix)s/lib
- -Dsitelib=%(system_prefix)s/lib/perl5/5.10.0
- -Dsitearch=%(system_prefix)s/lib/perl5/5.10.0
- -Dusedl
- -Duseshrplib
- -Dlibperl=libperl.so
- -Dcccdlflags=-fPIC
- -Dlocallibpth=/
- -Aldflags='%(rpath)s'
- -Alibs='-lm -lrt -ldl'
-''')
-    def configure (self):
-        tools.AutoBuild.configure (self)
-        for i in ['%(builddir)s/makefile', '%(builddir)s/x2p/makefile']:
-            # Ugh, missing some command?
-            self.file_sub ([('^0$','')], i)
-#    def install_command (self):
+
+
+    if 'darwin' in build_platform.machine():
+        librt_flag = '-lSystem'
+        target_arch_flag = '' # TODO: fix for cross-compilation
+    else:
+        librt_flag = '-lrt'
+        target_arch_flag = '-Dtargetarch=%(target_architecture)s'
+
+    configure_command = ' '.join([
+        '%(configure_binary)s',
+        '-Aldflags="%(rpath)s"',
+        '-Alibs="-lm -ldl %(librt_flag)s"',
+        '-Dcc="%(toolchain_prefix)sgcc %(target_gcc_flags)s"',
+        '-Dcccdlflags=-fPIC',
+        '-Dincpth=/',
+        '-Dlibperl=libperl.so',
+        '-Dlibpth=%(system_prefix)s/lib',
+        '-Dlocallibpth=/',
+        '-Dprefix=%(system_prefix)s',
+        '-Dsitearch=%(system_prefix)s/lib/perl5/5.28.1',
+        '-Dsitelib=%(system_prefix)s/lib/perl5/5.28.1',
+        target_arch_flag,
+        '-Dusedl',
+        '-Duseshrplib',
+        '-Dusrinc=%(system_prefix)s/include',
+    ])
+
+    def patch(self):
+        tools.AutoBuild.patch(self)
+        self.file_sub([('-c (/dev/null)', r'-e \1')], '%(srcdir)s/Configure')
+
+    def configure(self):
+        tools.AutoBuild.configure(self)
+        if 'darwin' not in build_platform.machine():
+            for i in ['%(builddir)s/makefile', '%(builddir)s/x2p/makefile']:
+                # Ugh, missing some command?
+                self.file_sub([('^0$','')], i)
diff --git a/gub/specs/pkg-config.py b/gub/specs/pkg-config.py
index c3f9df252..18da7924f 100644
--- a/gub/specs/pkg-config.py
+++ b/gub/specs/pkg-config.py
@@ -1,3 +1,4 @@
+from gub import build_platform
 from gub import tools
 
 class Pkg_config__tools (tools.AutoBuild):
@@ -5,3 +6,8 @@ class Pkg_config__tools (tools.AutoBuild):
             'libtool',
             'system::g++',
             ]
+
+    def __init__ (self, settings, source):
+        tools.AutoBuild.__init__ (self, settings, source)
+        if 'darwin' in build_platform.machine():
+            self.configure_variables += 'CFLAGS="-I%(system_prefix)s/include -std=gnu89"'
diff --git a/gub/specs/tar.py b/gub/specs/tar.py
index 7cf16b92f..097ff09b9 100644
--- a/gub/specs/tar.py
+++ b/gub/specs/tar.py
@@ -3,7 +3,7 @@
 from gub import tools
 
 class Tar__tools (tools.AutoBuild):
-    source = 'http://ftp.gnu.org/pub/gnu/tar/tar-1.28.tar.gz'
+    source = 'https://ftp.gnu.org/gnu/tar/tar-1.31.tar.gz'
     def __init__ (self, settings, source):
         tools.AutoBuild.__init__ (self, settings, source)
         if isinstance (self.source, repository.TarBall):
diff --git a/gub/specs/xzutils.py b/gub/specs/xzutils.py
index 2e937fa61..4c930fd05 100644
--- a/gub/specs/xzutils.py
+++ b/gub/specs/xzutils.py
@@ -2,5 +2,5 @@
 from gub import tools
 
 class Xzutils__tools (tools.AutoBuild):
-    source = 'http://tukaani.org/xz/xz-5.0.7.tar.bz2'
+    source = 'https://tukaani.org/xz/xz-5.0.7.tar.bz2'
     dependencies = ['tools::bzip2']
diff --git a/gub/target.py b/gub/target.py
index 4f142c98a..afa150a41 100644
--- a/gub/target.py
+++ b/gub/target.py
@@ -150,8 +150,8 @@ def get_substitution_dict (self, env={}):
             'NM': '%(toolchain_prefix)snm',
             'PKG_CONFIG_PATH': '%(system_prefix)s/lib/pkgconfig',
             'PATH': '%(cross_prefix)s/bin:%(tools_archmatch_prefix)s/bin:%(tools_prefix)s/bin:%(tools_cross_prefix)s/bin:' + os.environ['PATH'],
-            'PERL5LIB': 'foo:%(tools_prefix)s/lib/perl5/5.10.0'
-            + ':%(tools_prefix)s/lib/perl5/5.10.0/%(build_architecture)s'
+            'PERL5LIB': 'foo:%(tools_prefix)s/lib/perl5/5.28.1'
+            + ':%(tools_prefix)s/lib/perl5/5.28.1/%(build_architecture)s'
             + ':%(tools_prefix)s/share/autoconf'
             + misc.append_path (os.environ.get ('PERL5LIB', '')),
             'PKG_CONFIG': '''pkg-config \
diff --git a/gub/tools.py b/gub/tools.py
index 8218375b1..201f5cc41 100644
--- a/gub/tools.py
+++ b/gub/tools.py
@@ -169,8 +169,8 @@ def get_substitution_dict (self, env={}):
 #            'LIBRESTRICT_IGNORE': '%(system_prefix)s/bin/make:%(system_prefix)s/gcc:%(system_prefix)s/g++:%(system_prefix)s/ld', #etc.
             + misc.append_path (os.environ.get ('LIBRARY_PATH', '')),
             'PATH': '%(system_prefix)s/bin:%(system_cross_prefix)s/bin:' + os.environ['PATH'],
-            'PERL5LIB': 'foo:%(tools_prefix)s/lib/perl5/5.10.0'
-            + ':%(tools_prefix)s/lib/perl5/5.10.0/%(build_architecture)s'
+            'PERL5LIB': 'foo:%(tools_prefix)s/lib/perl5/5.28.1'
+            + ':%(tools_prefix)s/lib/perl5/5.28.1/%(build_architecture)s'
             + ':%(tools_prefix)s/share/autoconf'
             + misc.append_path (os.environ.get ('PERL5LIB', '')),
         }
diff --git a/patches/bzip2-1.0.6-darwin-soname.patch b/patches/bzip2-1.0.6-darwin-soname.patch
new file mode 100644
index 000000000..fa5a4dc1d
--- /dev/null
+++ b/patches/bzip2-1.0.6-darwin-soname.patch
@@ -0,0 +1,11 @@
+--- bzip2-1.0.6/Makefile-libbz2_so.old	2019-02-02 11:45:09.000000000 -0800
++++ bzip2-1.0.6/Makefile-libbz2_so	2019-02-02 11:45:17.000000000 -0800
+@@ -35,7 +35,7 @@
+       bzlib.o
+
+ all: $(OBJS)
+-	$(CC) -shared -Wl,-soname -Wl,libbz2.so.1.0 -o libbz2.so.1.0.6 $(OBJS)
++	$(CC) -shared -Wl,-install_name -Wl,libbz2.so.1.0 -o libbz2.so.1.0.6 $(OBJS)
+ 	$(CC) $(CFLAGS) -o bzip2-shared bzip2.c libbz2.so.1.0.6
+ 	rm -f libbz2.so.1.0
+ 	ln -s libbz2.so.1.0.6 libbz2.so.1.0
diff --git a/test-lily/test-binary.py b/test-lily/test-binary.py
index 7bd1b4568..c672e5c5a 100755
--- a/test-lily/test-binary.py
+++ b/test-lily/test-binary.py
@@ -40,6 +40,7 @@ def system (c, ignore_error=False):
     'linux-64': 'shar',
     'darwin-ppc' : 'darwin',
     'darwin-x86' : 'darwin',
+    'darwin-64' : 'darwin',
     'freebsd-x86': 'shar',
     'freebsd-64': 'shar',
 }
diff --git a/test-lily/upload.py b/test-lily/upload.py
index f8b8437ce..041f33b0a 100644
--- a/test-lily/upload.py
+++ b/test-lily/upload.py
@@ -32,6 +32,7 @@ def argv0_relocation ():
              'linux-ppc',
              'darwin-ppc',
              'darwin-x86',
+             'darwin-64',
              'documentation',
              'test-output',
              'freebsd-x86',