cc -pthread   -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations complex/imaginary.c -o complex/imaginary -D_POSIX_C_SOURCE=202405L -lm -lpthread  -lgdbm_compat -lintl -lnetwork -lbsd -latomic
complex/imaginary.c:4:2: error: #error "imaginary is not defined"
    4 | #error "imaginary is not defined"
      |  ^~~~~