--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -1053,6 +1053,10 @@ class PackageBase(object):
         touch(join_path(self.prefix.bin, 'fake'))
         mkdirp(self.prefix.include)
         mkdirp(self.prefix.lib)
+        library_name = 'lib' + self.name
+        dso_suffix = 'dylib' if sys.platform == 'darwin' else 'so'
+        touch(join_path(self.prefix.lib, library_name + dso_suffix))
+        touch(join_path(self.prefix.lib, library_name + '.a'))
         mkdirp(self.prefix.man1)