Slightly smoother stockfishes

[Dann Corbit]

Dann,

I'll have to wait then. I would not know how to define a macro if my life depended on it.

Roy

If you use GCC, you can supply it on the command line.

Or in the top of the file you can add this line:

#define SMOOTH_REDUCTION 1

I added the line above to search.cpp and then did a 'make' with this output:

<snip...>

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

Any pointers are greatly appreciated!

Roy

Add also these lines to the top of the file:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

[royb]

Dann,

I'll have to wait then. I would not know how to define a macro if my life depended on it.

Roy

If you use GCC, you can supply it on the command line.

Or in the top of the file you can add this line:

#define SMOOTH_REDUCTION 1

I added the line above to search.cpp and then did a 'make' with this output:

<snip...>

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

Any pointers are greatly appreciated!

Roy

Add also these lines to the top of the file:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

OK, changes made and now this output from make:

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2


Thanks again for your help!

Roy

[Shaun]

Hi again Dann,

thanks for the reply - I am very glad you 'tossed in a code patch' as you seem to have hit upon a significant if not dramatic improvement!

I will append date/time to the exe's for my testing

Shaun

[Dann Corbit]

Dann,

I'll have to wait then. I would not know how to define a macro if my life depended on it.

Roy

If you use GCC, you can supply it on the command line.

Or in the top of the file you can add this line:

#define SMOOTH_REDUCTION 1

I added the line above to search.cpp and then did a 'make' with this output:

<snip...>

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

Any pointers are greatly appreciated!

Roy

Add also these lines to the top of the file:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

OK, changes made and now this output from make:

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2


Thanks again for your help!

Roy

Did you add those two new lines to the top of search.cpp?
That should have defined the macro max() so that it was in scope.

[Dann Corbit]

Hi again Dann,

thanks for the reply - I am very glad you 'tossed in a code patch' as you seem to have hit upon a significant if not dramatic improvement!

I will append date/time to the exe's for my testing

Shaun

I will be keen to see the results of your tests.
It seems that it performs much better for me than for other people.
This is perhaps not surprising, since I profiled it on my machine, and so it may be tuned for my hardware.

[royb]

Dann,

I'll have to wait then. I would not know how to define a macro if my life depended on it.

Roy

If you use GCC, you can supply it on the command line.

Or in the top of the file you can add this line:

#define SMOOTH_REDUCTION 1

I added the line above to search.cpp and then did a 'make' with this output:

<snip...>

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

Any pointers are greatly appreciated!

Roy

Add also these lines to the top of the file:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

OK, changes made and now this output from make:

g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2


Thanks again for your help!

Roy

Did you add those two new lines to the top of search.cpp?
That should have defined the macro max() so that it was in scope.

Here is the first few lines of search.cpp now:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

#define SMOOTH_REDUCTION 1

/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
Copyright (C) 2008-2009 Marco Costalba

etc.

Roy

[Dann Corbit]

OK, I am very puzzled then.
Do a make clean, and show me the full output from the subsequent make.

[royb]

OK, I am very puzzled then.
Do a make clean, and show me the full output from the subsequent make.

Here is the make (after 'make clean'):

roy@ubuntu-roy:~/chess/test-new/stockfish_1.6$ make
Makefile:309: .depend: No such file or directory
g++ -msse -MM application.cpp bitboard.cpp pawns.cpp material.cpp endgame.cpp evaluate.cpp main.cpp misc.cpp move.cpp movegen.cpp history.cpp movepick.cpp search.cpp piece.cpp position.cpp direction.cpp tt.cpp value.cpp uci.cpp ucioption.cpp mersenne.cpp book.cpp bitbase.cpp san.cpp benchmark.cpp > .depend
make gcc
make[1]: Entering directory `/home/roy/chess/test-new/stockfish_1.6'
make \
CXX='g++' \
CXXFLAGS="-O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti" \
all
make[2]: Entering directory `/home/roy/chess/test-new/stockfish_1.6'
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o application.o application.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o bitboard.o bitboard.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o pawns.o pawns.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o material.o material.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o endgame.o endgame.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o evaluate.o evaluate.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o main.o main.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o misc.o misc.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o move.o move.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
search.cpp: In function ‘Value<unnamed>::search(Position&, SearchStack*, Value, Depth, int, bool, int, Move)’:
search.cpp error: ‘max’ was not declared in this scope
value.h: At global scope:
value.h:126: warning: ‘TempoValue’ defined but not used
history.h:70: warning: ‘HistoryMax’ defined but not used
make[2]: *** [search.o] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

Ok, I found one problem. '.depend' was not copied over when I made a new directory for Stockfish-1.6 (the DC version). I have now copied that over and after a make clean and moving the MAX macro to line 45 (after the #includes) I get this on a make:

roy@ubuntu-roy:~/chess/test-new/stockfish_1.6$ make
Makefile:309: .depend: No such file or directory
g++ -msse -MM application.cpp bitboard.cpp pawns.cpp material.cpp endgame.cpp evaluate.cpp main.cpp misc.cpp move.cpp movegen.cpp history.cpp movepick.cpp search.cpp piece.cpp position.cpp direction.cpp tt.cpp value.cpp uci.cpp ucioption.cpp mersenne.cpp book.cpp bitbase.cpp san.cpp benchmark.cpp > .depend
make gcc
make[1]: Entering directory `/home/roy/chess/test-new/stockfish_1.6'
make \
CXX='g++' \
CXXFLAGS="-O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti" \
all
make[2]: Entering directory `/home/roy/chess/test-new/stockfish_1.6'
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o application.o application.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o bitboard.o bitboard.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o pawns.o pawns.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o material.o material.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o endgame.o endgame.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o evaluate.o evaluate.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o main.o main.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o misc.o misc.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o move.o move.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movegen.o movegen.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o history.o history.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o movepick.o movepick.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o search.o search.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o piece.o piece.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o position.o position.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o direction.o direction.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o tt.o tt.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o value.o value.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o uci.o uci.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o ucioption.o ucioption.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o mersenne.o mersenne.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o book.o book.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o bitbase.o bitbase.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o san.o san.cpp
g++ -O1 -msse -DNDEBUG -g -Wall -fno-exceptions -fno-rtti -c -o benchmark.o benchmark.cpp
g++ -lpthread -o stockfish application.o bitboard.o pawns.o material.o endgame.o evaluate.o main.o misc.o move.o movegen.o history.o movepick.o search.o piece.o position.o direction.o tt.o value.o uci.o ucioption.o mersenne.o book.o bitbase.o san.o benchmark.o
search.o: In function `nodes_searched()':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:649: multiple definition of `nodes_searched()'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:644: first defined here
search.o: In function `SearchStack::init(int)':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:659: multiple definition of `SearchStack::init(int)'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:654: first defined here
search.o: In function `SearchStack::initKillers()':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:666: multiple definition of `SearchStack::initKillers()'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:661: first defined here
search.o: In function `stop_threads()':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:628: multiple definition of `stop_threads()'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:623: first defined here
search.o: In function `init_threads()':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:575: multiple definition of `init_threads()'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:570: first defined here
search.o: In function `perft(Position&, Depth)':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:342: multiple definition of `perft(Position&, Depth)'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:337: first defined here
search.o: In function `think(Position const&, bool, bool, int, int*, int*, int, int, int, int, Move*)':
/home/roy/chess/test-new/stockfish_1.6/search.cpp:375: multiple definition of `think(Position const&, bool, bool, int, int*, int*, int, int, int, int, Move*)'
misc.o:/home/roy/chess/test-new/stockfish_1.6/misc.cpp:370: first defined here
application.o: In function `Application':
/home/roy/chess/test-new/stockfish_1.6/application.cpp:55: undefined reference to `get_system_time()'
/home/roy/chess/test-new/stockfish_1.6/application.cpp:55: undefined reference to `get_system_time()'
evaluate.o: In function `evaluate_pieces<(PieceType)3u, (Color)0u, false>':
/home/roy/chess/test-new/stockfish_1.6/evaluate.cpp:602: undefined reference to `Chess960'
evaluate.o: In function `evaluate_pieces<(PieceType)3u, (Color)1u, false>':
/home/roy/chess/test-new/stockfish_1.6/evaluate.cpp:602: undefined reference to `Chess960'
evaluate.o: In function `evaluate_pieces<(PieceType)3u, (Color)0u, true>':
/home/roy/chess/test-new/stockfish_1.6/evaluate.cpp:602: undefined reference to `Chess960'
evaluate.o: In function `evaluate_pieces<(PieceType)3u, (Color)1u, true>':
/home/roy/chess/test-new/stockfish_1.6/evaluate.cpp:602: undefined reference to `Chess960'
main.o: In function `main':
/home/roy/chess/test-new/stockfish_1.6/main.cpp:81: undefined reference to `engine_name()'
misc.o: In function `(anonymous namespace)::current_search_time()':
misc.cpp:(.text+0xbbe): undefined reference to `get_system_time()'
misc.o: In function `(anonymous namespace)::poll()':
misc.cpp:(.text+0xe02): undefined reference to `Bioskey()'
misc.cpp:(.text+0x104f): undefined reference to `dbg_show_mean'
misc.cpp:(.text+0x1057): undefined reference to `dbg_print_mean()'
misc.cpp:(.text+0x105d): undefined reference to `dbg_show_hit_rate'
misc.cpp:(.text+0x1065): undefined reference to `dbg_print_hit_rate()'
misc.o: In function `(anonymous namespace)::id_loop(Position const&, Move*)':
misc.cpp:(.text+0x57fd): undefined reference to `dbg_show_mean'
misc.cpp:(.text+0x580a): undefined reference to `dbg_print_mean(std::basic_ofstream<char, std::char_traits<char> >&)'
misc.cpp:(.text+0x5810): undefined reference to `dbg_show_hit_rate'
misc.cpp:(.text+0x581d): undefined reference to `dbg_print_hit_rate(std::basic_ofstream<char, std::char_traits<char> >&)'
misc.o: In function `think(Position const&, bool, bool, int, int*, int*, int, int, int, int, Move*)':
misc.cpp:(.text+0x5de9): undefined reference to `get_system_time()'
misc.cpp:(.text+0x6724): undefined reference to `Chess960'
move.o: In function `move_to_string(Move)':
/home/roy/chess/test-new/stockfish_1.6/move.cpp:123: undefined reference to `Chess960'
search.o: In function `(anonymous namespace)::current_search_time()':
search.cpp:(.text+0xbbe): undefined reference to `get_system_time()'
search.o: In function `(anonymous namespace)::poll()':
search.cpp:(.text+0xe02): undefined reference to `Bioskey()'
search.cpp:(.text+0x104f): undefined reference to `dbg_show_mean'
search.cpp:(.text+0x1057): undefined reference to `dbg_print_mean()'
search.cpp:(.text+0x105d): undefined reference to `dbg_show_hit_rate'
search.cpp:(.text+0x1065): undefined reference to `dbg_print_hit_rate()'
search.o: In function `(anonymous namespace)::id_loop(Position const&, Move*)':
search.cpp:(.text+0x585d): undefined reference to `dbg_show_mean'
search.cpp:(.text+0x586a): undefined reference to `dbg_print_mean(std::basic_ofstream<char, std::char_traits<char> >&)'
search.cpp:(.text+0x5870): undefined reference to `dbg_show_hit_rate'
search.cpp:(.text+0x587d): undefined reference to `dbg_print_hit_rate(std::basic_ofstream<char, std::char_traits<char> >&)'
search.o: In function `think(Position const&, bool, bool, int, int*, int*, int, int, int, int, Move*)':
search.cpp:(.text+0x5e49): undefined reference to `get_system_time()'
search.cpp:(.text+0x6784): undefined reference to `Chess960'
uci.o: In function `(anonymous namespace)::perft(std::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >&)':
/home/roy/chess/test-new/stockfish_1.6/uci.cpp:334: undefined reference to `get_system_time()'
/home/roy/chess/test-new/stockfish_1.6/uci.cpp:338: undefined reference to `get_system_time()'
uci.o: In function `(anonymous namespace)::handle_command(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
/home/roy/chess/test-new/stockfish_1.6/uci.cpp:121: undefined reference to `engine_name()'
ucioption.o: In function `init_uci_options()':
/home/roy/chess/test-new/stockfish_1.6/ucioption.cpp:206: undefined reference to `cpu_count()'
/home/roy/chess/test-new/stockfish_1.6/ucioption.cpp:206: undefined reference to `cpu_count()'
/home/roy/chess/test-new/stockfish_1.6/ucioption.cpp:207: undefined reference to `cpu_count()'
/home/roy/chess/test-new/stockfish_1.6/ucioption.cpp:207: undefined reference to `cpu_count()'
benchmark.o: In function `benchmark(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
/home/roy/chess/test-new/stockfish_1.6/benchmark.cpp:148: undefined reference to `get_system_time()'
/home/roy/chess/test-new/stockfish_1.6/benchmark.cpp:163: undefined reference to `get_system_time()'
collect2: ld returned 1 exit status
make[2]: *** [stockfish] Error 1
make[2]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make[1]: *** [gcc] Error 2
make[1]: Leaving directory `/home/roy/chess/test-new/stockfish_1.6'
make: *** [default] Error 2

[noctiferus]

Yes, please, do change the names: I'm not alone in finding some confusion among your updates, and your and Jim's compiles!

[viriathus]

I have this:

#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))

at line 45 in search.cpp

and compile OK