[jira] [Created] (ARROW-6447) [C++] Builds with ARROW_JEMALLOC=ON wait until jemalloc_ep is complete before building any libarrow .cc files

["Wes McKinney (Jira)" <ji...@apache.org>]

Wes McKinney created ARROW-6447:
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             Summary: [C++] Builds with ARROW_JEMALLOC=ON wait until jemalloc_ep is complete before building any libarrow .cc files
                 Key: ARROW-6447
                 URL: https://issues.apache.org/jira/browse/ARROW-6447
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Wes McKinney


This has been a frustration for me that my builds wait for the jemalloc_ep build to complete before proceeding to compile any C++ files for libarrow. Since only memory_pool.cc depends on jemalloc_ep, there must be some way to create a dependency between that single C++ file and jemalloc_ep. I spent a few minutes Googling about it but did not come up with an easy answer



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