can't find ethash_params in benchmarl.cpp

[pupil11]

Good day to everybody,
i'm new here and would like to test make Benchmark_FULL
, but i'm told that ‘ethash_params’ was not declared:

deeplearning@deep-learning-virtual-machine:~/ethash/test/c/build$ make Benchmark_FULL
[ 71%] Built target ethash
Scanning dependencies of target Benchmark_FULL
[ 85%] Building CXX object src/benchmark/CMakeFiles/Benchmark_FULL.dir/benchmark.cpp.o
/home/deeplearning/ethash/src/benchmark/benchmark.cpp: In function ‘int main()’:
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:108:2: error: ‘ethash_params’ was not declared in this scope
ethash_params params;
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:109:22: error: ‘params’ was not declared in this scope
ethash_params_init(&params, 0);
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:109:31: error: ‘ethash_params_init’ was not declared in this scope
ethash_params_init(&params, 0);
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:129:2: error: ‘ethash_cache’ was not declared in this scope
ethash_cache cache;
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:130:2: error: ‘cache’ was not declared in this scope
cache.mem = cache_mem;
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:135:40: error: ‘ethash_mkcache’ was not declared in this scope
ethash_mkcache(&cache, &params, &seed);
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:146:58: error: invalid use of incomplete type ‘struct ethash_light’
ethash_light(&hash, &cache, &params, &previous_hash, 0);
^
In file included from /home/deeplearning/ethash/src/benchmark/benchmark.cpp:25:0:
/home/deeplearning/ethash/src/benchmark/../libethash/ethash.h:58:8: note: forward declaration of ‘struct ethash_light’
struct ethash_light;
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:153:54: error: ‘ethash_compute_full_data’ was not declared in this scope
ethash_compute_full_data(full_mem, &params, &cache);
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:175:58: error: invalid use of incomplete type ‘struct ethash_full’
ethash_full(&hash, full_mem, &params, &previous_hash, 0);
^
In file included from /home/deeplearning/ethash/src/benchmark/benchmark.cpp:25:0:
/home/deeplearning/ethash/src/benchmark/../libethash/ethash.h:60:8: note: forward declaration of ‘struct ethash_full’
struct ethash_full;
^
/home/deeplearning/ethash/src/benchmark/benchmark.cpp:248:64: error: invalid use of incomplete type ‘struct ethash_full’
ethash_full(&hash, full_mem, &params, &previous_hash, nonce);
^
In file included from /home/deeplearning/ethash/src/benchmark/benchmark.cpp:25:0:
/home/deeplearning/ethash/src/benchmark/../libethash/ethash.h:60:8: note: forward declaration of ‘struct ethash_full’
struct ethash_full;
^
src/benchmark/CMakeFiles/Benchmark_FULL.dir/build.make:62: recipe for target 'src/benchmark/CMakeFiles/Benchmark_FULL.dir/benchmark.cpp.o' failed
make[3]: *** [src/benchmark/CMakeFiles/Benchmark_FULL.dir/benchmark.cpp.o] Error 1
CMakeFiles/Makefile2:210: recipe for target 'src/benchmark/CMakeFiles/Benchmark_FULL.dir/all' failed
make[2]: *** [src/benchmark/CMakeFiles/Benchmark_FULL.dir/all] Error 2
CMakeFiles/Makefile2:217: recipe for target 'src/benchmark/CMakeFiles/Benchmark_FULL.dir/rule' failed
make[1]: *** [src/benchmark/CMakeFiles/Benchmark_FULL.dir/rule] Error 2
Makefile:157: recipe for target 'Benchmark_FULL' failed
make: *** [Benchmark_FULL] Error 2

Could you please advise ethash_params in benchmarl.cpp or give the working version of this file ?

thanks a lot