On Mac OS X 10.6.7, compiled using Xcode Version 3.2.6 64-bit, i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1, scm_init_guile() gives the error: Failed to get stack base for current thread. The program 'guile' works, though. And scm_init_guile() works in Guile 2.0.0.
(On this platform, there is a later clang/llvm based compiler, that comes with Xcode 4.) Hans