Building benchmarks/bonnie on and for an rpi2 (armv6 with -mcpu=cortex-a7) under 11.0 -r302331 reports:
Bonnie.c:392:49: warning: format specifies type 'int' but the argument has type 'long long' [-Wformat]
printf("<TR><TD>%s</TD><TD>%d</TD>", machine, size / (1024 * 1024));
This sort of thing makes the software likely big-endian vs. little-endian (vs. pdp-endian) sensitive and the like. Likely explicitly casting to long long or other such large type and using a matching format is required to survive various various targets.
The above width mismatch is less likely to appear to work for powerpc or powerpc64 (big-endian). [It will be some time before I again have access to the powerpc's.]
Other build notices were. . .
implicitly declaring library function 'strcmp' with type 'int (const char *, const char *)'
include the header <string.h> or explicitly provide a declaration for 'strcmp'
implicit declaration of function 'wait' is invalid in C99
implicitly declaring library function 'strerror' with type 'char *(int)'
include the header <string.h> or explicitly provide a declaration for 'strerror'
The build was of bonnie-2.0.6_1 --which is still in place as of /usr/ports/ -r419343 .
This error still appears as of 20170128, although the port does build.