I forgot to mention that it’s easy to build Scheme 48 as an Universal Binary. Thus, it works fine and fast on Intel-based Macs. Apple’s tech note 2137 gives some hints how to build multiarchitecture binaries on OS X. However, the hints described in this document don’t seem to work in all cases. Building the binaries for each architecture separatly and later combining them with lipo is an alternative. This also reminds me that I need to write a scsh script that automatically combines the binaries using lipo.

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