depends_on and when multimethod support boolean

lib/spack/spack/directives.py

@@ -174,7 +174,11 @@ def version(pkg, ver, checksum=None, **kwargs):
 
 
 def _depends_on(pkg, spec, when=None):
-    if when is None:
+    # If when is False do nothing
+    if when is False:
+        return
+    # If when is None or True make sure the condition is always satisfied
+    if when is None or when is True:
         when = pkg.name
     when_spec = parse_anonymous_spec(when, pkg.name)
 

lib/spack/spack/multimethod.py

@@ -193,10 +193,11 @@ def install(self, prefix):
        platform-specific versions.  There's not much we can do to get
        around this because of the way decorators work.
     """
-class when(object):
     def __init__(self, spec):
         pkg = get_calling_module_name()
-        self.spec = parse_anonymous_spec(spec, pkg)
+        if spec is True:
+            spec = pkg
+        self.spec = parse_anonymous_spec(spec, pkg) if spec is not False else None
 
     def __call__(self, method):
         # Get the first definition of the method in the calling scope
@@ -207,7 +208,9 @@ def __call__(self, method):
         if not type(original_method) == SpecMultiMethod:
             original_method = SpecMultiMethod(original_method)
 
-        original_method.register(self.spec, method)
+        if self.spec is not None:
+            original_method.register(self.spec, method)
+
         return original_method
 
 

lib/spack/spack/util/architecture.py

@@ -0,0 +1,46 @@
+##############################################################################
+# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License (as published by
+# the Free Software Foundation) version 2.1 dated February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+
+import sys
+
+
+def os_is_in(*args):
+    """
+    Return True if any element in the list is equal to sys.platform, False otherwise
+
+    :param args: list of names to be checked
+    :return: True or False
+    """
+    return any(map(lambda x: x == sys.platform, args))
+
+
+def os_is_not_in(*args):
+    """
+    Return True if none of the elements in the list is equal to sys.platform, False otherwise
+
+    :param args: list of names to be checked
+    :return: True or False
+    """
+    return not os_is_in(*args)

var/spack/packages/openssl/package.py

@@ -1,5 +1,7 @@
 from spack import *
 
+import spack.util.architecture as arch
+
 class Openssl(Package):
     """The OpenSSL Project is a collaborative effort to develop a
        robust, commercial-grade, full-featured, and Open Source
@@ -26,3 +28,16 @@ def install(self, spec, prefix):
 
         make()
         make("install")
+
+    @when(arch.os_is_in('darwin'))
+    def install(self, spec, prefix):
+        perl = which('perl')
+        perl("./Configure",
+             "--prefix=%s" % prefix,
+             "--openssldir=%s/etc/openssl" % prefix,
+             "zlib",
+             "no-krb5",
+             "shared",
+             "darwin64-x86_64-cc")
+        filter_file(r'-arch x86_64', '', 'Makefile')
+