+
+ # Generate this header, including the missing SYS_memfd_create
+ # macro, which is not provided by the header in the Travis
+ # instance
+ mkdir -p sys
+ printf "%s\n" \
+ "#ifndef _SYSCALL_H" \
+ "#define _SYSCALL_H 1" \
+ "" \
+ "#include <asm/unistd.h>" \
+ "" \
+ "#ifndef _LIBC" \
+ "# include <bits/syscall.h>" \
+ "#endif" \
+ "" \
+ "#ifndef __NR_memfd_create" \
+ "# define __NR_memfd_create 319 /* Taken from <asm/unistd_64.h> */" \
+ "#endif" \
+ "" \
+ "#ifndef SYS_memfd_create" \
+ "# define SYS_memfd_create __NR_memfd_create" \
+ "#endif" \
+ "" \
+ "#endif" > sys/syscall.h