Dev Builds » 20200822-2037

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN

Commit

Commit ID 3542033342f15625f808013b69aa8c2d274a2f91
Author St├ęphane Nicolet
Date 2020-08-22 20:37:50 UTC
Instructions to build on older Macintosh In recent Macs, it is possible to use the Clang compiler provided by Apple to compile Stockfish out of the box, and this is the method used by default in our Makefile (the Makefile sets the macosx-version-min=10.14 flag to select the right libc++ library for the Clang compiler with recent c++17 support). But it is quite possible to compile and run Stockfish on older Macs! Below we describe a method to install a recent GNU compiler on these Macs, to get the c++17 support. We have tested the following procedure to install gcc10 on machines running Mac OS 10.7, Mac OS 10.9 and Mac OS 10.13: 1) install XCode for your machine. 2) install Apple command-line developer tools for XCode, by typing the following command in a Terminal: ``` sudo xcode-select --install ``` 3) go to the Stockfish "src" directory, then try a default build and run Stockfish: ``` make clean make build make net ./stockfish ``` 4) if step 3 worked, congrats! You have a compiler recent enough on your Mac to compile Stockfish. If not, continue with step 5 to install GNU gcc10 :-) 5) install the MacPorts package manager (https://www.macports.org/install.php), for instance using the fast method in the "macOS Package (.pkg) Installer" section of the page. 6) use the "port" command to install the gcc10 package of MacPorts by typing the following command: ``` sudo port install gcc10 ``` With this step, MacPorts will install the gcc10 compiler under the name "g++-mp-10" in the /opt/local/bin directory: ``` which g++-mp-10 /opt/local/bin/g++-mp-10 <--- answer ``` 7) You can now go back to the "src" directory of Stockfish, and try to build Stockfish by pointing at the right compiler: ``` make clean make build COMP=gcc COMPCXX=/opt/local/bin/g++-mp-10 make net ./stockfish ``` 8) Enjoy Stockfish on Macintosh! See this pull request for further discussion: https://github.com/official-stockfish/Stockfish/pull/3049 No functional change
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