Irony server fails to install on macOS 10.14.5 with current Homebrew (as of the time this issue was filed) and LLVM 8 installed via Homebrew. The source of the error, as far as I can tell, is that the current version of LLVM 8 in Homebrew is 8.0.0_1 instead of 8.0.0 -- this sort of "underscored version" tends to occur when a package needs to be updated due to updates in dependency package versions.
Irony server fails to install on macOS 10.14.5 with current Homebrew (as of the time this issue was filed) and LLVM 8 installed via Homebrew. The source of the error, as far as I can tell, is that the current version of LLVM 8 in Homebrew is 8.0.0_1 instead of 8.0.0 -- this sort of "underscored version" tends to occur when a package needs to be updated due to updates in dependency package versions.