I received the errors for tail.c shown below when compiling coreutils on
MacOS (11.6). Adding __APPLE__ to the #if defined for poll.h fixes the
issue (see the diff at the bottom). Making this change matches that line
to the one within check_output_alive().
commit 324c188cfd8a1628c260e5003d309613a0c66e57 (August 29, 2022) made
the change to check_output_alive(), but missed the change reported here.
Dennis
(HEAD: aaa306ad76d48b27efd75101d57b6ec5bf90362c)
Error:
CC src/tail.o
src/tail.c:367:17: error: variable has incomplete type 'struct pollfd'
struct pollfd pfd;