CommandLine Error under LLVM 7.0.1 (Arch)

[ProfFan]

Compiled using CMake

$ bin/terra 
: CommandLine Error: Option 'help-list' registered more than once!
LLVM ERROR: inconsistency in registered CommandLine options

[ProfFan]

Seems to be a problem with static linkage

Works fine if LLVM is dynamically linked.

[elliottslaughter]

Interesting. Are you building LLVM from source or using Arch's packages?

[ProfFan]

Using Arch's packages. Googling suggests that we are loading multiple copies of LLVM?

[elliottslaughter]

@ProfFan does this still reproduce and if so can you give us a set of instructions (e.g. that can be executed within docker -ti arch ... or similar) so we can test this ourselves?

[ProfFan]

I think this is because LLVM is linked in twice somehow. However I do not currently have time for this...

[ProfFan]

#477

[elliottslaughter]

Just wanted to mention #477 has been fixed by using Ubuntu's first-party repos instead of LLVM's ones. It may be that there are packaging issues here too.

As before though, any attempt to fix this will need a way to reproduce (e.g., a Docker command line and short set of instructions would be best).