zhztheplayer opened a new pull request, #8350:
URL: https://github.com/apache/incubator-gluten/pull/8350

   Remove `--enable_ep_cache` to simplify the build script. After the removal, 
`ccache` based build acceleration will be preferred.
   
   Reason:
   
   Overtime `--enable_ep_cache` brings more maintenance burden than its 
benefits. It was designed as a "smart" flag to let the build system decide 
whether to rebuild Velox code again, however ended up with a partial solution, 
which doesn't take all the build variables as the cache key. It's possible that 
we enhance the cache key generation code to make it consider all the variables 
however it will make the build script more complicated.
   
   The patch removes `--enable_ep_cache` for the reason. `ccache` based build 
acceleration will be preferred. In future we could add a manual flag or a 
command line prompt to skip Velox build if similar functionality is still 
needed.


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