failed to build on i686

[thecodder]

  CC       algorithm/gatelessgate-ethash.o
  CC       algorithm/gatelessgate-ethgencache.o
  CC       algorithm/gatelessgate-eth-sha3.o
  CC       algorithm/gatelessgate-cryptonight.o
algorithm/cryptonight.c: In function 'cryptonight':
algorithm/cryptonight.c:136:2: error: inconsistent operand constraints in an 'asm'
  __asm__("mul %%rdx":
  ^~~~~~~
  CC       algorithm/gatelessgate-equihash.o
make[2]: *** [Makefile:1671: algorithm/gatelessgate-cryptonight.o] Error 1
make[2]: *** Waiting for unfinished jobs....
algorithm/equihash.c: In function 'equihash_verify_sol':
algorithm/equihash.c:212:14: warning: unused variable 'thr_id' [-Wunused-variable]
     uint32_t thr_id = work->thr->id;
              ^~~~~~
make[2]: Leaving directory '/usr/local/gatelessgate/Core'
make[1]: *** [Makefile:1742: all-recursive] Error 1
make[1]: Leaving directory '/usr/local/gatelessgate/Core'
make: *** [Makefile:667: all] Error 2

[cryptocifer]

same issue with you

Ubuntu16.04 mingw32 cross compiling