Hello,

My 64 bit processor don't carry pocount or sse4 instruction i edit make file (for linux) to remove specific value for g++ but i met error during compile that let me think that there is an error in popcount function replacement

i get specific screenshot for result if needed

jm@jm-Latitude-D630:~/Documents/Gull-master/src$ make -f Makefile.linux build ARCH=x86-64 COMP=g++ unzip -o -j Fathom-master.zip "Fathom-master/src/tbprobe.h" -d "./" Archive: Fathom-master.zip 1720b7f8dd894f7c6468c3917500c97989f45600 inflating: ./tbprobe.h
unzip -o -j Fathom-master.zip "Fathom-master/src/tbprobe.c" -d "./" Archive: Fathom-master.zip 1720b7f8dd894f7c6468c3917500c97989f45600 inflating: ./tbprobe.c
unzip -o -j Fathom-master.zip "Fathom-master/src/tbcore.h" -d "./" Archive: Fathom-master.zip 1720b7f8dd894f7c6468c3917500c97989f45600 inflating: ./tbcore.h
unzip -o -j Fathom-master.zip "Fathom-master/src/tbcore.c" -d "./" Archive: Fathom-master.zip 1720b7f8dd894f7c6468c3917500c97989f45600 inflating: ./tbcore.c
g++ -fno-exceptions -fno-rtti -fno-stack-protector -Wno-parentheses -pthread -D GULL_MAGIC_BITBOARDS -DVERSION=170402-Linux-x86_64 -O3 -D LINUX Gull.cpp tbprobe.c -lrt -Wl,--defsym=INFO=0x300000 -Wl,--defsym=SETTINGS=0x301000 -Wl,--defsym=SHARED=0x302000 -Wl,--defsym=DATA=0x74000000 -Wl,--defsym=PAWNHASH=0x78000000 -Wl,--defsym=PVHASH=0x7B000000 -Wl,--defsym=HASH=0x7F000000 -o LazyGull In file included from Gull.cpp:957:0: Linux.cpp:46:0: warning: "UINT64_MAX" redefined #define UINT64_MAX 0xFFFFFFFFFFFFFFFFull // XXX ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/stdint.h:9:0, from data.h:4, from Gull.cpp:37: /usr/include/stdint.h:169:0: note: this is the location of the previous definition

define UINT64_MAX (__UINT64_C(18446744073709551615))

^ In file included from Gull.cpp:957:0: Linux.cpp:47:0: warning: "UINT32_MAX" redefined #define UINT32_MAX 0xFFFFFFFF ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/stdint.h:9:0, from data.h:4, from Gull.cpp:37: /usr/include/stdint.h:168:0: note: this is the location of the previous definition

define UINT32_MAX (4294967295U)

^ In file included from Gull.cpp:957:0: Linux.cpp:48:0: warning: "UINT8_MAX" redefined #define UINT8_MAX 0xFF ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/stdint.h:9:0, from data.h:4, from Gull.cpp:37: /usr/include/stdint.h:166:0: note: this is the location of the previous definition

define UINT8_MAX (255)

^ In file included from Gull.cpp:578:0: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h: In function ‘int popcount(uint64_t)’: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ Gull.cpp:581:26: error: called from here return _mm_popcnt_u64(x); ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h: In function ‘void prt_str(const pos*, char*, bool)’: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:555:14: note: in expansion of macro ‘popcount’ for (i = popcount(white & pos->queens); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:557:14: note: in expansion of macro ‘popcount’ for (i = popcount(white & pos->rooks); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:559:14: note: in expansion of macro ‘popcount’ for (i = popcount(white & pos->bishops); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:561:14: note: in expansion of macro ‘popcount’ for (i = popcount(white & pos->knights); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:563:14: note: in expansion of macro ‘popcount’ for (i = popcount(white & pos->pawns); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:567:14: note: in expansion of macro ‘popcount’ for (i = popcount(black & pos->queens); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:569:14: note: in expansion of macro ‘popcount’ for (i = popcount(black & pos->rooks); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:571:14: note: in expansion of macro ‘popcount’ for (i = popcount(black & pos->bishops); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:573:14: note: in expansion of macro ‘popcount’ for (i = popcount(black & pos->knights); i > 0; i--) ^ In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/smmintrin.h:811:0, from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:41, from tbprobe.c:33: /usr/lib/gcc/x86_64-linux-gnu/5/include/popcntintrin.h:42:1: error: inlining failed in call to always_inline ‘long long int _mm_popcnt_u64(long long unsigned int)’: target specific option mismatch _mm_popcnt_u64 (unsigned long long __X) ^ tbprobe.c:76:47: error: called from here #define popcount(x) _mm_popcnt_u64((x)) ^ tbprobe.c:575:14: note: in expansion of macro ‘popcount’ for (i = popcount(black & pos->pawns); i > 0; i--) ^ Makefile.linux:65 : la recette pour la cible « build » a échouée make: *** [build] Erreur 1 jm@jm-Latitude-D630:~/Documents/Gull-master/src$

Yes, I think the current version assumes a CPU that supports popcnt. Only very old CPUs have this problem?

Yes on my other "Haswell" computer everything is fine, this occur on an Intel Core2 Duo T7250 ( http://ark.intel.com/products/31728 ) the part of code to replace popcnt instruction seems to get a problem no ?

by the way "old" only 10 years old ;-)

10 year old computers are considered very old - no commercial software is supported after 10 years , so why should gratis software be any different - naturally a lot of software works after 10 years , but that is just luck , not that it is still supported.

Yes Michael, but for popcnt instruction for ordinary CPU (not Corei7) is supported only since 2013 (wiki source). The problem is not like you said. A great job (thanksfull) was done to make this great chess engine compatible with LINUX / MAC. Many other chess engine source could be compile on 64 (normal or BMI or popcnt) and even 32 bits (very very very old computer) and also for some in C++11 on ARM plateform like RaspBerry. I'm not sure that the problem i rise up is so big. How to test ordinary 64 compiling if you don't get a computer without 64 bits CPU without popcnt, bmi SSE4.2 (all this modern features). of course, i don't wait that a software build 10 years ago could run on a current OS or CPU that was nor existing when was building the software but this case is different (and reverse)

Did you try with flag -march=native if you are compiling on the machine in question ? If compiling from other machine , just use -O2

ok, thanks, i'm not sure to catch, i edit the line N° 14 from the linux makefile and set like this CFLAGS += -march=native -D GULL_MAGIC_BITBOARDS then i run make -f Makefile.linux build ARCH=x86-64 COMP=g++