Hi, On OS X 10.9 with Xcode 5.1, make fails unless -O0 is used; the output of ./configure && make during the failure is here:
http://sprunge.us/PLGI After a successful build with -O0, there are two failures during make check: FAIL: srfi-18.test: thread-terminate!: termination destroys non-started thread FAIL: srfi-18.test: thread-terminate!: termination destroys started thread Ask away for any additional information I can provide! Taylan