Only build libhdfs if a flag is passed
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Key: HDFS-2040
URL: https://issues.apache.org/jira/browse/HDFS-2040
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 0.23.0
Reporter: Eli Collins
Assignee: Eli Collins
Priority: Minor
Fix For: 0.23.0
In HDFS-2022 we made ant binary build libhdfs unconditionally, this is a pain
for users who now need to get the native toolchain working to create a tarball
to test a change, and inconsistent with common and MR (see MAPREDUCE-2559)
which only build native code if a flag is passed. Let's revert to the previous
behavior of requiring -Dlibhdfs be passed at build time. We could also create a
new ant target that doesn't build the native code, however restoring the old
behavior seems simplest.
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