On Tue, 3 Mar 2026 at 00:39, Andrew W. Nosenko <[email protected]> wrote:
> > On Mon, 2 Mar 2026 at 22:48, Dima Pasechnik <[email protected]> wrote: > >> On Mon, Mar 02, 2026 at 09:45:35PM +0200, Andrew W. Nosenko wrote: >> > >> > Does modern Xcode includes libomp “out of the box” or it need to be >> built >> > separately from Homebrew/MacPorts/Git? (I have access to Catalina bot >> not >> > to more modern version, and on Catalina it doesn’t) >> No, Xcode has no libomp. But Homebrew has a libomp package: >> https://formulae.brew.sh/formula/libomp >> >> It's also provided by R Project: >> https://mac.r-project.org/openmp/ >> >> And, yes, naturally, one can build libomp as a part of the llvm >> installation. >> > > > But then I’m confused again: if I need to build libomp separately from > LLVM sources, then why I would to prefer XCode’s Clang instead of Clang > from the same LLVM package, from which I’m going to build libomp anyway? > OpenMP is about compiler’s #pragmas plus runtime support library. So I see risks in de-synchronisation between frontend (compiler) and backend (library). But I see no benefits in using de-synchronised toolchain (Xcode clang + non-Xcode llvm libomp). >
