license: Improve disk usage

Currently copies of the license files are made which wastes disk space
and adversely affects performance. We can link these instead in most
cases for small performance gains.

(From OE-Core rev: 0b0f3631fd22f731b6aeedb73965e367b695028b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index 601f5611cc10592c8946adb89601724d49172dd8..a34ea39493c785bed710435654f54e246cf9686f 100644 (file)
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -145,7 +145,14 @@ def copy_license_files(lic_files_paths, destdir):
     bb.utils.mkdirhier(destdir)
     for (basename, path) in lic_files_paths:
         try:
-            ret = shutil.copyfile(path, os.path.join(destdir, basename))
+            src = path
+            dst = os.path.join(destdir, basename)
+            if os.path.exists(dst):
+                os.remove(dst)
+            if (os.stat(src).st_dev == os.stat(destdir).st_dev):
+                os.link(src, dst)
+            else:
+                shutil.copyfile(src, dst)
         except Exception as e:
             bb.warn("Could not copy license file %s: %s" % (basename, e))