[ARROW-816] [C++] Use conda packages for RapidJSON, Flatbuffers to speed up builds

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/16424
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 13/Apr/17 14:17
• Updated: 11/Jan/23 07:11
• Resolved: 13/Apr/17 18:02

Description

These libraries are being downloaded and built (in the case of Flatbuffers) multiple times in the course of a normal build. It would be better to build them ones and set the *_HOME environment variables so that they can be used throughout the CI run.