Hi I seem to be getting an error during compiling of monero-stratum.

[ 60%] Linking CXX shared library libcnutil.so
[ 60%] Built target cnutil
Scanning dependencies of target hashing
[ 60%] Building C object hashing/CMakeFiles/hashing.dir/src/hashing.c.o
/home/miner/monero-stratum/hashing/src/hashing.c: In function 
/home/miner/monero-stratum/hashing/src/hashing.c:5:5: error: too many arguments to function ‘cn_slow_hash’
 cn_slow_hash(input, len, output, variant, 0);
In file included from /home/miner/monero-stratum/hashing/src/hashing.c:1:0:
/home/miner/monero/src/crypto/hash-ops.h:82:6: note: declared here
void cn_slow_hash(const void *data, size_t length, char *hash);
hashing/CMakeFiles/hashing.dir/build.make:62: recipe for target 
'hashing/CMakeFiles/hashing.dir/src/hashing.c.o' failed
make[2]: *** [hashing/CMakeFiles/hashing.dir/src/hashing.c.o] Error 1
CMakeFiles/Makefile2:123: recipe for target 'hashing/CMakeFiles/hashing.dir/all' failed
make[1]: *** [hashing/CMakeFiles/hashing.dir/all] Error 2
Makefile:83: recipe for target 'all' failed

I followed the Ubuntu 16.04 directions.

Perhaps the recent update to the Monero Daemon caused this.

Please Help.

  • I'm going to download a docker version .. Boy I feel Lazy for not solving this. Commented May 7, 2018 at 15:50
  • Even the docker version of this did not compile. I think this is because of the fork . Commented May 7, 2018 at 22:02
  • 1
    It looks like part of the code was updated for variant 1, and part was not. Maybe one of these parts is an external dependency.
    – user36303
    Commented May 11, 2018 at 20:03

2 Answers 2


I found this in the repo and it worked for me.

Boils down to running this:

apt-get -qq update
apt-get install -y -qq libboost-all-dev golang curl cmake build-essential libssl-dev git-core libunbound-dev libzmq3-dev 
curl -L -o ~/v0.12.0.0.tar.gz https://github.com/monero-project/monero/archive/v0.12.0.0.tar.gz
tar xzvf ~/v0.12.0.0.tar.gz -C ~/
pushd ~/monero- && cmake -DBUILD_SHARED_LIBS=1 . && make && popd

then running:

cmake .

from monero-stratum if you weren't in there already.

You may need to specify MONERO_DIR when runing cmake . in the monero-stratum repo per the directions on the repo homepage.


install latest go from https://golang.org/dl/

create home/go/scr Add /usr/local/go/bin to the PATH environment variable. You can do this by adding this line to your /etc/profile (for a system-wide installation) or $HOME/.profile:

export PATH=$PATH:/usr/local/go/bin

create home/go/scr

follow https://github.com/sammy007/monero-stratum until error then

edit monero-stratum/hashing/src/hashing.c to looklike this

#include "crypto/hash-ops.h"

void cryptonight_hash(const char* input, char* output, uint32_t len) {
    const int variant = input[0] >= 7 ? input[0] - 6 : 0;
    cn_slow_hash(input, len, output);

void cryptonight_fast_hash(const char* input, char* output, uint32_t len) {
    cn_fast_hash(input, len, output);


cmake .



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