create leading directories for resources

This allows resources to be placed into subdirectory trees that may not
exist in the base package, and may depend on other resources to be
staged later.

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/spack/spack/package.py b/lib/spack/spack/package.py
index 84bcb15f7f..69b263db0c 100644
--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -705,10 +705,17 @@ class Package(object):
                 placement = {'': placement}
             # Make the paths in the dictionary absolute and link
             for key, value in placement.iteritems():
-                link_path = join_path(self.stage.source_path, resource.destination, value)
+                target_path = join_path(self.stage.source_path, resource.destination)
+                link_path = join_path(target_path, value)
                 source_path = join_path(stage.source_path, key)
                 if not os.path.exists(link_path):
                     # Create a symlink
+                    try:
+                        os.makedirs(target_path)
+                    except OSError as err:
+                        if err.errno == errno.EEXIST and os.path.isdir(target_path):
+                            pass
+                        else: raise
                     os.symlink(source_path, link_path)
         ##########
         self.stage.chdir_to_source()