[HDFS-16464] Create only libhdfspp static libraries for Windows

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: libhdfs++
• Labels: libhdfscpp pull-request-available

Environment

Windows 10

Language

CMake

• Assignee: Gautham Banasandra
• Reporter: Gautham Banasandra
• Created: 20/Feb/22 08:01
• Updated: 19/Jul/22 16:08
• Resolved: 19/Jul/22 16:08

Description

While building dynamic libraries (.dll) on Windows, there's a constraint that all the dependent libraries be linked dynamically. This poses an issue since Protobuf (which is an HDFS native client dependency) runs into build issues when linked dynamically. There are a few warning notes on the Protobuf repository's build instructions page as well.

Thus, to keep things simple, we can resort to do only static linking and thereby only produce statically linked libraries on Windows. In summary, we'll be providing only Hadoop .lib files initially. We can aim to produce Hadoop .dll on Windows eventually once we're able to resolve Protobuf's .dll issues.

In Hadoop CMake files, we've a function hadoop_add_dual_library that creates both the static an dynamic library targets. We need to replace all these to get only static libraries for Windows.

Issue Links

• is a child of: HADOOP-17193 Compile Hadoop on Windows natively
• links to: GitHub Pull Request #4571