cc -O2 -pipe  -pthread -I/usr/local/include  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations math/FP_FAST_FMAL.c -o math/FP_FAST_FMAL -D_POSIX_C_SOURCE=202405L  -lm -lpthread -L/usr/local/lib  -lintl
math/FP_FAST_FMAL.c:4:2: error: "FP_FAST_FMAL is not defined"
    4 | #error "FP_FAST_FMAL is not defined"
      |  ^
1 error generated.