cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/M_1_SQRTPIl.c -o math/M_1_SQRTPIl -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
math/M_1_SQRTPIl.c:8:26: error: 'M_1_SQRTPIl' undeclared here (not in a function); did you mean 'M_2_SQRTPI'?
    8 | long double  const foo = M_1_SQRTPIl;
      |                          ^~~~~~~~~~~
      |                          M_2_SQRTPI