alsa-project/alsa-utils issue #9 was edited from takaswie:

Reported by Jay Foster in alsa-devel list. http://mailman.alsa-project.org/pipermail/alsa-devel/2019-January/144024.htm...

The v1.1.8 release brings FTBFS of axfer in his legacy toolchain (glibc v2.9) for arm platform, due to missing definition `POLLRDNORM` and the others, used in `axfer/waiter-select.c`. An option of `-D_GNU_SOURCE` for CFLAGS can suppress the issue. With glibc v2.22, no issues.

During development period of axfer, this issue has never been got. More recent version of glibc (v2.28) was used and the macro is available without any explicit options.

Issue URL : https://github.com/alsa-project/alsa-utils/issues/9 Repository URL: https://github.com/alsa-project/alsa-utils