ERROR: Clang must be installed in order to build this target

Development Platform & Builds
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I’ve been trying to generate a clang database to use with my editor on linux for what amounts to 3 days now and UBT doesn’t seem to want to do that. I’ve tried tweaking the ClangPath at Engine/Source/Programs/UnrealBuildTool/Platform/Linux/LinuxToolchain.cs, tried setting environment variables, tried tweaking the Engine/Build/BatchFiles/Linux/Build.sh script but it seems UBT don’t want to work on this mode. And yes, I have both the engine clang toolchain and the compiler installed locally

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HI! I just have the same problem and it seems that UBT actually checks for clang.exe path to be present. I tried to generalize it in this PR to work for Mac and Linux.
I tested in Linux and it generated the database.

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In case anyone stumbles upon this thread, I’ve just fixed this error error on Windows by setting LLVM_PATH environment variable to a directory where LLVM was installed. See FindToolChainInstallations method in UEBuildWindows.cs for details.

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