Build error MacOs

[JL.LV]

Im getting this new error when I try to build Macos:
Has anyone else had this issue?

[Noradavis]

So i'm trying to create package manually from the 'r2.6' branch but stucked on some wired c++ compilation errors. The build commands Clicker counter i'm trying:Dear All, I am having problems building ROOT 6.22.00 from source on macOS. Note, my (ultimate) aim here is to update the build within .am getting the following error when building gcc@7 on Mac OS 10.13.6. I have both Xcode and Xcode-beta installed. $ clang --version.