root@pibasement:/home/ml/bfgminer# make
( cd . && ./gen-version.sh ) >version.h.new
cmp ./version.h version.h.new && rm version.h.new || mv version.h.new ./version.h
make  all-recursive
make[1]: Entering directory '/home/ml/bfgminer'
Making all in lib
make[2]: Entering directory '/home/ml/bfgminer/lib'
make  all-recursive
make[3]: Entering directory '/home/ml/bfgminer/lib'
make[4]: Entering directory '/home/ml/bfgminer/lib'
make[4]: Nothing to be done for 'all-am'.
make[4]: Leaving directory '/home/ml/bfgminer/lib'
make[3]: Leaving directory '/home/ml/bfgminer/lib'
make[2]: Leaving directory '/home/ml/bfgminer/lib'
Making all in ccan.bfg
make[2]: Entering directory '/home/ml/bfgminer/ccan.bfg'
make[2]: *** No rule to make target '../ccan-upstream/ccan/opt/helpers.c', needed by '../ccan-upstream/ccan/opt/libccan_a-helpers.o'.  Stop.
make[2]: Leaving directory '/home/ml/bfgminer/ccan.bfg'
make[1]: *** [Makefile:2868: all-recursive] Error 1
make[1]: Leaving directory '/home/ml/bfgminer'
make: *** [Makefile:1218: all] Error 2
root@pibasement:/home/ml/bfgminer#