p5-term-gnuplot @0.903.809.60: error: implicit declaration of function 'test_term' is invalid in C99

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-11_arm64-builder/builds/1042/steps/install-port/logs/stdio

Gnuplot.c:557:11: error: implicit declaration of function 'test_term' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        RETVAL = test_term();
                 ^

Gnuplot.c:685:11: error: implicit declaration of function 'get_term_ftable' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        RETVAL = int_get_term_ftable();
                 ^

Gnuplot.c:702:2: error: implicit declaration of function 'v_set_term_ftable' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        int_set_term_ftable(a);
        ^

Gnuplot.c:718:11: error: implicit declaration of function 'init_terminal' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        RETVAL = init_terminal();
                 ^

Gnuplot.c:1349:11: error: implicit declaration of function 'make_palette' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        RETVAL = make_gray_palette();
                 ^

Gnuplot.xs:543:5: error: implicit declaration of function 'setup_gpshim' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    setup_gpshim();
    ^

Gnuplot.xs:546:5: error: implicit declaration of function 'init_color' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    init_color();
    ^