I compiled the new release of gcc-5.1 with the Cilkplus parallel processing extensions and runtime library for ARMv7 architecture on the Raspberry Pi 2B single board computer. Two changes were needed.
The first change corrects a typo in generic/cilk-abi-vla.c by changing the second to the last line of the file from
the second change was to generic/os-fence.c and ARM specific. Comment out the line
COMMON_SYSDEP void __cilkrts_fence(void); ///< MFENCE instruction