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