Create include/lib in prefix for oneapi packages (#37552)

lib/spack/spack/build_systems/oneapi.py

@@ -4,13 +4,16 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 """Common utilities for managing intel oneapi packages."""
 import getpass
+import os
 import platform
 import shutil
 from os.path import basename, dirname, isdir
 
 from llnl.util.filesystem import find_headers, find_libraries, join_path
+from llnl.util.link_tree import LinkTree
 
 from spack.directives import conflicts, variant
+from spack.package import mkdirp
 from spack.util.environment import EnvironmentModifications
 from spack.util.executable import Executable
 
@@ -125,6 +128,31 @@ def setup_run_environment(self, env):
                 )
             )
 
+    def symlink_dir(self, src, dest):
+        # Taken from: https://github.com/spack/spack/pull/31285/files
+        # oneapi bin/lib directories are 2 or 3 levels below the
+        # prefix, but it is more typical to have them directly in the
+        # prefix. The location has changed over time. Rather than make
+        # every package that needs to know where include/lib are
+        # located be aware of this, put in symlinks to conform. This
+        # is good enough for some, but not all packages.
+
+        # If we symlink top-level directories directly, files won't
+        # show up in views Create real dirs and symlink files instead
+
+        # Create a real directory at dest
+        mkdirp(dest)
+
+        # Symlink all files in src to dest keeping directories as dirs
+        for entry in os.listdir(src):
+            src_path = join_path(src, entry)
+            dest_path = join_path(dest, entry)
+            if isdir(src_path) and os.access(src_path, os.X_OK):
+                link_tree = LinkTree(src_path)
+                link_tree.merge(dest_path)
+            else:
+                os.symlink(src_path, dest_path)
+
 
 class IntelOneApiLibraryPackage(IntelOneApiPackage):
     """Base class for Intel oneAPI library packages.