gnome.yelp(): Handle platforms where symlink not supported

mesonbuild/scripts/yelphelper.py

@@ -80,8 +80,11 @@ def install_help(srcdir, blddir, sources, media, langs, install_dir, destdir, pr
                     mlog.log('Symlinking %s to %s.' % (outfile, srcfile))
                     if '/' in m or '\\' in m:
                         os.makedirs(os.path.dirname(outfile), exist_ok=True)
-                    os.symlink(srcfile, outfile)
-                    continue
+                    try:
+                        os.symlink(srcfile, outfile)
+                        continue
+                    except (NotImplementedError, OSError):
+                        mlog.warning('Symlinking not supported, falling back to copying')
                 else:
                     # Lang doesn't have media file so copy it over 'C' one
                     infile = os.path.join(srcdir, 'C', m)