Changeset 10237:8dca2b118862
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Util: Do not style check symlinks

The style checker used to traverse symlinks if they pointed to files, which can
result in style checker failure if the pointed-to file doesn't exist. This
style check is actually unnecessary, since symlinks either point to other files
that are already style checked, or files outside gem5, which shouldn't be
checked. Skip symlinks.

Context: The scons implementation of gem5 regressions is pretty clunky and rigid;
When implementing gem5-style regressions for gem5-gpu, the gem5 regressions
structure requires that we do one of the following:
 1) Store and update regressions outputs in a patch on gem5 (YUCK!)
 2) Replicate some test/ subdirectories across gem5 and gem5-gpu (undesirable)
 3) Use a symlink from gem5 into gem5-gpu (currently most preferred)
Currently, symlinks can cause the style check to fail despite not even needing to
check them.

We have verified that this patch correctly skips checking symlinks.