Get compile_commands.json

Development Platform & Builds
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The first two steps on Sourcetrail with Unreal Engine 4 - a quick primer suggest a working approach, until native support for JSON Compilation Database is added to the Unreal Build Tool.

Quoting the steps:

  1. Install a patched version of Bear from GitHub - TTimo/Bear at ttimo (note: ttimo branch)
  2. From a clean UE4 tree, capture a compilation database:
    bear -o ./UE4Game.json ./Engine/Build/BatchFiles/Linux/Build.sh UE4Game Linux Development -disableunity -nopch

He points out two issues that currently block Bear from capturing UE4 builds correctly: