On Nov 14, 2018, at 11:17, Riccardo Mottola wrote: > I wonder if this will cause issues on my 10.5 at the next upgrade, since it is 32bit form me.. I'll see. zstd and tiff built successfully on our 10.5 PowerPC builder. The problem may be specific to 32-bit Intel, or it may be specific to Snow Leopard.