procarray.c:780:31: warning: passing 'const pg_atomic_uint32 *' (aka 'const struct pg_atomic_uint32 *') to parameter of type
      'volatile pg_atomic_uint32 *' (aka 'volatile struct pg_atomic_uint32 *') discards qualifiers
      [-Wincompatible-pointer-types-discards-qualifiers]
        nextidx = pg_atomic_read_u32(&procglobal->procArrayGroupFirst);
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../src/include/port/atomics.h:241:47: note: passing argument to parameter 'ptr' here
pg_atomic_read_u32(volatile pg_atomic_uint32 *ptr)
                                              ^
procarray.c:785:38: warning: passing 'const pg_atomic_uint32 *' (aka 'const struct pg_atomic_uint32 *') to parameter of type
      'volatile pg_atomic_uint32 *' (aka 'volatile struct pg_atomic_uint32 *') discards qualifiers
      [-Wincompatible-pointer-types-discards-qualifiers]
                if (pg_atomic_compare_exchange_u32(&procglobal->procArrayGroupFirst,
                                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../src/include/port/atomics.h:311:59: note: passing argument to parameter 'ptr' here
pg_atomic_compare_exchange_u32(volatile pg_atomic_uint32 *ptr,
                                                          ^
procarray.c:829:35: warning: passing 'const pg_atomic_uint32 *' (aka 'const struct pg_atomic_uint32 *') to parameter of type
      'volatile pg_atomic_uint32 *' (aka 'volatile struct pg_atomic_uint32 *') discards qualifiers
      [-Wincompatible-pointer-types-discards-qualifiers]
        nextidx = pg_atomic_exchange_u32(&procglobal->procArrayGroupFirst,
                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../src/include/port/atomics.h:292:51: note: passing argument to parameter 'ptr' here
pg_atomic_exchange_u32(volatile pg_atomic_uint32 *ptr, uint32 newval)
                                                  ^
procarray.c:3132:9: warning: returning 'const PGPROC *' (aka 'const struct PGPROC *') from a function with result type 'PGPROC *'
      (aka 'struct PGPROC *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        return result;
               ^~~~~~
procarray.c:3159:11: warning: returning 'const PGPROC *' (aka 'const struct PGPROC *') from a function with result type 'PGPROC *'
      (aka 'struct PGPROC *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
                        return proc;
                               ^~~~
procarray.c:3778:23: warning: passing 'const List *' (aka 'const struct List *') to parameter of type 'List *' (aka 'struct List *')
      discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
                        pids = lappend_int(pids, proc->pid);
                                           ^~~~
../../../../src/include/nodes/pg_list.h:540:45: note: passing argument to parameter 'list' here
extern pg_nodiscard List *lappend_int(List *list, int datum);
                                            ^
6 warnings generated.
^Cmake[3]: *** [pg_checksums.o] Interrupt: 2
make[3]: *** wait: Interrupted system call.  Stop.
make[3]: *** Waiting for unfinished jobs....
make[3]: *** [pg_basebackup.o] Interrupt: 2
make[2]: *** wait: Interrupted system call.  Stop.
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [all-pg_checksums-recurse] Interrupt: 2
make[2]: *** wait: Interrupted system call.  Stop.
make[1]: *** [all-bin-recurse] Error 2
make: *** [world-src-recurse] Interrupt: 2
make[3]: *** [html-stamp] Interrupt: 2
make[3]: *** [man-stamp] Interrupt: 2
make[2]: *** [all] Interrupt: 2
make[1]: *** [all] Interrupt: 2
make: *** [world-doc-recurse] Interrupt: 2

Aleksanders-MacBook-Pro:postgresql eax$ cc --version
Apple clang version 11.0.0 (clang-1100.0.33.16)
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin