diff -ur mpfr-4.1.0/src/mparam_h.in mpfr-src/src/mparam_h.in --- mpfr-4.1.0/src/mparam_h.in Thu Jan 09 03:11:13 2020 +++ mpfr-src/src/mparam_h.in Sun Jul 12 16:40:20 2020 @@ -31,6 +31,8 @@ /* Note: the different macros used here are those defined by gcc, for example with gcc -mtune=native -dM -E -xc /dev/null */ +#elif 1 /* no processor specific optimization for TeX Live */ +#define MPFR_TUNE_CASE "default" #elif (defined (__tune_core2__) || defined (__tune_nocona__)) && defined (__x86_64) /* 64-bit Core 2 or Xeon */ #define MPFR_TUNE_CASE "src/x86_64/core2/mparam.h" #include "x86_64/core2/mparam.h"