* Mathieu Desnoyers via Libc-alpha: > Changes since v14: > - Update copyright range to include 2020. > - Introduce __ASSUME_RSEQ defined for --enable-kernel=4.18.0 and higher. > - Use ifdef __ASSUME_RSEQ rather than ifdef __NR_rseq to discover rseq > availability. This is necessary now that the system call numbers are > integrated within glibc. It's not quite clear to me why you need __ASSUME_RSEQ. Can you use __has_include in <sys/rseq.h>, with a copy of the kernel definitions if the kernel header is not available?