Crafty won't build on non-Intel macOS #14

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1. MichaelB7 commented on Aug 28, 2026

   

   MichaelB7

   on Aug 28, 2026 via email

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   I am now retired , 70 years old. I'm either golfing, bowling or traveling. Sitting at the computer, not so much. Grace & Peace, Michael

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   On Fri, Aug 28, 2026, 10:36 AM Bob Kline ***@***.***> wrote: *bkline* created an issue (MichaelB7/Crafty#14) <#14> Issue Even after editing the Makefile as instructed to remove -mpopcnt the build chokes on any macOS computer currently sold by Apple. ./lock.h:57:8: error: invalid output constraint '=&q' in asm 57 | :"=&q"(dummy) | ^ ./lock.h:69:8: error: invalid input constraint 'q' in asm 69 | :"q"(lock) | ^ In file included from crafty.c:27: ./utility.c:2074:38: warning: 'sscanf' may overflow; destination buffer in argument 3 has size 64, but the corresponding specifier may require size 65 [-Wfortify-source] 2074 | sscanf(buffer, "%64s", analysis_move); | ^ 1 warning and 2 errors generated. Environment - Computer: MacBook Pro 14-inch, 2021 - Chip: Apple M1 Pro - Memory: 32 GB - macOS: Tahoe 26.6.2 - clang: 21.0.0 - Target: arm64-apple-darwin25.6.0 - Thread model: posix Solution I've solved the problem for myself by creating my own branch. If I provide a pull request which modifies lock.h and Makefile so that Apple silicon builds are supported, would you be interested? Would you want that warning addressed as well, or would you prefer to deal with that problem separately? — Reply to this email directly, view it on GitHub <#14?email_source=notifications&email_token=ADINNUY3FP22ZF4YBFLLGAT5MGKFVA5CNFSL4Z3JMQ5C6L3HNF2C22DVMIXUS43TOVSS6NJSG44TENZXGA3DFJTSMVQXG33OVJZXKYTTMNZGSYTFMSSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADINNU4KMY5SBVFDFNZDBCT5MGKFVAVCNFSNUABEKJSXA33TNF2G64TZHM3DSNZZGQZDMNB3JFZXG5LFHM2TENZZGI3TOMBWGKQXMAQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>
2. bkline commented on Aug 28, 2026

   

   bkline

   on Aug 28, 2026

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   Enjoy your retirement, Michael. I just retired at 78 (though only reluctantly, when the current administration shut down the programs I was supporting at the National Cancer Institute). I'm mostly bicycling, reading with my wife, helping her with her master gardener activities, contributing to open source software projects, and playing chess with my son and my granddaughter.

   Cheers,
   Bob