fluent-bit failing to build

[Herby G]

fluent-bit is failing to build on pretty much everything except Big Sur and
Catalina: https://ports.macports.org/port/fluent-bit/details/

/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/mbedtls-2.26.0/library/cmac.c
CC        lj_vmevent.o
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:40:5:
error: use of undeclared identifier 'clock_serv_t'
    clock_serv_t cclock;
    ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:41:5:
error: use of undeclared identifier 'mach_timespec_t'
    mach_timespec_t mts;
    ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:42:5:
warning: implicit declaration of function 'host_get_clock_service' is
invalid in C99 [-Wimplicit-function-declaration]
    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
    ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:42:28:
warning: implicit declaration of function 'mach_host_self' is invalid
in C99 [-Wimplicit-function-declaration]
    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
                           ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:42:46:
error: use of undeclared identifier 'CALENDAR_CLOCK'
    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
                                             ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:42:63:
error: use of undeclared identifier 'cclock'
    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
                                                              ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:43:5:
warning: implicit declaration of function 'clock_get_time' is invalid
in C99 [-Wimplicit-function-declaration]
    clock_get_time(cclock, &mts);
    ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:43:20:
error: use of undeclared identifier 'cclock'
    clock_get_time(cclock, &mts);
                   ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:43:29:
error: use of undeclared identifier 'mts'
    clock_get_time(cclock, &mts);
                            ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:44:7:
error: member reference type 'struct timespec' is not a pointer; did
you mean to use '.'?
    tm->tv_sec = mts.tv_sec;
    ~~^~
      .
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:44:18:
error: use of undeclared identifier 'mts'
    tm->tv_sec = mts.tv_sec;
                 ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:45:7:
error: member reference type 'struct timespec' is not a pointer; did
you mean to use '.'?
    tm->tv_nsec = mts.tv_nsec;
    ~~^~
      .
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:45:19:
error: use of undeclared identifier 'mts'
    tm->tv_nsec = mts.tv_nsec;
                  ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:46:5:
warning: implicit declaration of function 'mach_port_deallocate' is
invalid in C99 [-Wimplicit-function-declaration]
    mach_port_deallocate(mach_task_self(), cclock);
    ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:46:26:
warning: implicit declaration of function 'mach_task_self' is invalid
in C99 [-Wimplicit-function-declaration]
    mach_port_deallocate(mach_task_self(), cclock);
                         ^
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/fluent-bit-1.8.3/lib/cmetrics/src/cmt_time.c:46:44:
error: use of undeclared identifier 'cclock'; did you mean 'clock'?
    mach_port_deallocate(mach_task_self(), cclock);
                                           ^~~~~~
                                           clock
/usr/include/time.h:108:9: note: 'clock' declared here
clock_t clock(void) __DARWIN_ALIAS(clock);
        ^
5 warnings and 11 errors generated.
make[2]: *** [lib/cmetrics/src/CMakeFiles/cmetrics-static.dir/cmt_time.c.o]
Error 1
make[2]: Leaving directory
`/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_sysutils_fluent-bit/fluent-bit/work/build'
make[1]: *** [lib/cmetrics/src/CMakeFiles/cmetrics-static.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....


I think legacysupport was meant to address a lot of these clock
definition issues, but not sure why this is all failing now.  Anyone
have any suggestions?
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