No popcnt 64-bit compilation?

[rwbc]

Hi Niels,

Would you mind releasing a no popcnt 64-bit version (WIN) too?

I tried compiling it myself with plain gcc -O3 -march=native *.cpp *.h -o loki, but there are lots of warnings and some errors. Obviously it also uses MS extensions, which will not work with gcc. (It seems it will only compile in MSVC currently) https://stackoverflow.com/questions/49570839/strerror-s-strcpy-s-localtime-s-sprintf-s-not-declared-in-this-scope

Is this a typo? ... (b)) should this be ...(bb))? (thats one of the error complaints of the compiler) https://github.com/BimmerBass/Loki/blob/master/Loki/bitboard.h#L267v

Guenther

[BimmerBass]

Hi Guenther.

I will fix the errors/warnings and add a USE_POPCNT flag tomorrow, since I don't have time to do it today. I have added a makefile to make compilation a bit easier and I will try to fix all the warnings and apparent include errors gcc gives. Do you also get an error saying that libraries like thread and iostream aren't included?

[rwbc]

Sorry, I don't remember right now and haven't saved a log. I could try it again though in the evening.

[BimmerBass]

So it turns out i didn't have mingw64 installed but rather mingw32 which is what caused the inclusion problems. I have added a makefile for gcc which compiles now (mingw64), and i will implement the no popcount version when school is finished later today. After that, i intend to fix the warnings.

Please reach out if you experience more compilation errors with gcc

[rwbc]

It compiles now and works!

Just some partially 'sloppy' warnings and one enum-compare warning appear several times (gcc 10.2.0 is nitpicking)

Loki/bitboard.h:28:3: warning: integer constant is so large that it is unsigned
   28 |   18374686479671623680
      |   ^~~~~~~~~~~~~~~~~~~~
Loki/bitboard.h:53:3: warning: integer constant is so large that it is unsigned
   53 |   9241421688590303745,
      |   ^~~~~~~~~~~~~~~~~~~

In file included from Loki/search.h:4,
                 from Loki/search.cpp:1:
Loki/misc.h:8: warning: "NOMINMAX" redefined
    8 | #define NOMINMAX
      |
In file included from C:/msys64/mingw64/include/c++/10.2.0/x86_64-w64-mingw32/bits/c++config.h:518,
                 from C:/msys64/mingw64/include/c++/10.2.0/iostream:38,
                 from Loki/defs.h:5,
                 from Loki/bitboard.h:4,
                 from Loki/position.h:5,
                 from Loki/movegen.h:3,
                 from Loki/search.h:3,
                 from Loki/search.cpp:1:
C:/msys64/mingw64/include/c++/10.2.0/x86_64-w64-mingw32/bits/os_defines.h:45: note: this is the location of the previous definition
   45 | #define NOMINMAX 1
      |
In file included from Loki/position.h:5,
                 from Loki/movegen.h:3,
                 from Loki/thread.h:3,
                 from Loki/thread.cpp:1:

Loki/evaluation.cpp: In function 'int Eval::{anonymous}::material(GameState_t*)':
Loki/evaluation.cpp:32:24: warning: enumerated mismatch in conditional expression: 'Eval::mgValues' vs 'Eval::egValues' [-Wenum-compare]
   32 |    v += ((phase == MG) ? pawnValMg : pawnValEg) * countBits(pos->pieceBBS[PAWN][side]);
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Loki/evaluation.cpp:33:24: warning: enumerated mismatch in conditional expression: 'Eval::mgValues' vs 'Eval::egValues' [-Wenum-compare]
   33 |    v += ((phase == MG) ? knightValMg : knightValEg) * countBits(pos->pieceBBS[KNIGHT][side]);
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Loki/evaluation.cpp:34:24: warning: enumerated mismatch in conditional expression: 'Eval::mgValues' vs 'Eval::egValues' [-Wenum-compare]
   34 |    v += ((phase == MG) ? bishopValMg : bishopValEg) * countBits(pos->pieceBBS[BISHOP][side]);
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Loki/evaluation.cpp:35:24: warning: enumerated mismatch in conditional expression: 'Eval::mgValues' vs 'Eval::egValues' [-Wenum-compare]
   35 |    v += ((phase == MG) ? rookValMg : rookValEg) * countBits(pos->pieceBBS[ROOK][side]);
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Loki/evaluation.cpp:36:24: warning: enumerated mismatch in conditional expression: 'Eval::mgValues' vs 'Eval::egValues' [-Wenum-compare]
   36 |    v += ((phase == MG) ? queenValMg : queenValEg) * countBits(pos->pieceBBS[QUEEN][side]);
      |          ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

[BimmerBass]

Yes and I have just added non-popcount support which should work if you just change the use_popcount = yes to use_popcount = no in the makefile and use make. I will take care of the warnings a little later... need a break from all compilers ;))

[rwbc]

Yes and I have just added non-popcount support which should work if you just change the use_popcount = yes to use_popcount = no in the makefile and use make.

yeah, noticed it and already used it for my compilation

I will take care of the warnings a little later... need a break from all compilers ;))

:)