Custom Build for SBCL 1.2 with Multithreading on FreeBSD 10

After installing SBCL 1.2.9 from the standard baseline package for FreeBSD 10.1-RELEASE, the *features* value is as follows:

(:ALIEN-CALLBACKS :ANSI-CL :ASH-RIGHT-VOPS :BSD :C-STACK-IS-CONTROL-STACK :COMMON-LISP :COMPARE-AND-SWAP-VOPS :COMPLEX-FLOAT-VOPS :CYCLE-COUNTER :ELF :FLOAT-EQL-VOPS :FREEBSD :GCC-TLS :GENCGC :IEEE-FLOATING-POINT :INLINE-CONSTANTS :INTEGER-EQL-VOP :INTERLEAVED-RAW-SLOTS :LINKAGE-TABLE :LITTLE-ENDIAN :MEMORY-BARRIER-VOPS :MULTIPLY-HIGH-VOPS :OS-PROVIDES-BLKSIZE-T :OS-PROVIDES-DLADDR :OS-PROVIDES-DLOPEN :OS-PROVIDES-GETPROTOBY-R :OS-PROVIDES-POLL :OS-PROVIDES-PUTWC :OS-PROVIDES-SUSECONDS-T :PACKAGE-LOCAL-NICKNAMES :PRECISE-ARG-COUNT-ERROR :RAW-INSTANCE-INIT-VOPS :SB-CORE-COMPRESSION :SB-DOC :SB-EVAL :SB-LDB :SB-PACKAGE-LOCKS :SB-QSHOW :SB-SIMD-PACK :SB-SOURCE-LOCATIONS :SB-TEST :SB-UNICODE :SBCL :STACK-ALLOCATABLE-CLOSURES :STACK-ALLOCATABLE-FIXED-OBJECTS :STACK-ALLOCATABLE-LISTS :STACK-ALLOCATABLE-VECTORS :STACK-GROWS-DOWNWARD-NOT-UPWARD :SYMBOL-INFO-VOPS :UNIX :UNWIND-TO-FRAME-AND-CALL-VOP :X86-64)

In a a custom build, SBCL 1.2.14.32-ce739b6

(:ALIEN-CALLBACKS :ANSI-CL :ASH-RIGHT-VOPS :BSD :C-STACK-IS-CONTROL-STACK :COMMON-LISP :COMPARE-AND-SWAP-VOPS :COMPLEX-FLOAT-VOPS :CYCLE-COUNTER :ELF :FLOAT-EQL-VOPS :FP-AND-PC-STANDARD-SAVE :FREEBSD :GCC-TLS :GENCGC :IEEE-FLOATING-POINT :INLINE-CONSTANTS :INTEGER-EQL-VOP :INTERLEAVED-RAW-SLOTS :LINKAGE-TABLE :LITTLE-ENDIAN :MEMORY-BARRIER-VOPS :MULTIPLY-HIGH-VOPS :OS-PROVIDES-BLKSIZE-T :OS-PROVIDES-DLADDR :OS-PROVIDES-DLOPEN :OS-PROVIDES-GETPROTOBY-R :OS-PROVIDES-POLL :OS-PROVIDES-PUTWC :OS-PROVIDES-SUSECONDS-T :PACKAGE-LOCAL-NICKNAMES :PRECISE-ARG-COUNT-ERROR :RAW-INSTANCE-INIT-VOPS :SB-DOC :SB-EVAL :SB-FUTEX :SB-LDB :SB-PACKAGE-LOCKS :SB-SAFEPOINT :SB-SIMD-PACK :SB-SOURCE-LOCATIONS :SB-TEST :SB-THREAD :SB-THRUPTION :SB-UNICODE :SB-WTIMER :SB-XREF-FOR-INTERNALS :SBCL :STACK-ALLOCATABLE-CLOSURES :STACK-ALLOCATABLE-FIXED-OBJECTS :STACK-ALLOCATABLE-LISTS :STACK-ALLOCATABLE-VECTORS :STACK-GROWS-DOWNWARD-NOT-UPWARD :SYMBOL-INFO-VOPS :UNIX :UNWIND-TO-FRAME-AND-CALL-VOP :X86-64)

 Difference:

(:SB-XREF-FOR-INTERNALS :SB-WTIMER :SB-THRUPTION :SB-THREAD :SB-SAFEPOINT :SB-FUTEX :FP-AND-PC-STANDARD-SAVE)

In the custom build, I'd enabled the :SB-XREF-FOR-INTERNALS feature for purpose of debugging, the :SB-WTIMER, :SB-THRUPTION, and SB-SAFEPOINT features for purpose of testing, and initially just :SB-THREAD for multithreading. The build did not complete.

Without :SB-FUTEX enabled, the build might fail/loop/freeze during the build's integrated testing. When the :SB-FUTEX feature is enabled along with :SB-THREAD, then SBCL compiles successfully on FreeBSD 10.1.

#YMMV

Ed. Note: This has since been addressed to a comment in the FreeBSD Bugzilla database, at Issue nr. 199055