clang -O2   -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/math_errhandling.c -o math/math_errhandling -D_POSIX_C_SOURCE=202405L  -lm   -lintl
math/math_errhandling.c:3:2: error: "math_errhandling is not defined"
#error "math_errhandling is not defined"
 ^
1 error generated.