Commits
Wes McKinney authored 8cfa163560b
ARROW-6447: [C++] Allow rest of arrow_objlib to build in parallel while memory_pool.cc is waiting on jemalloc_ep Using OBJECT_DEPENDS like this seems to only work with the Ninja build generator with CMake 3.12.x, which is probably a bug. With Makefiles we fall back to the old strategy of blocking on the completion of jemalloc_ep. Closes #5281 from wesm/ARROW-6447 and squashes the following commits: 7e46ff4e1 <Wes McKinney> Only use OBJECT_DEPENDS with Ninja build generator c93f311ea <Wes McKinney> cmake-format eb529653b <Wes McKinney> Add jemalloc_ep dependency only on memory_pool.cc Authored-by: Wes McKinney <wesm+git@apache.org> Signed-off-by: Wes McKinney <wesm+git@apache.org>