--- libbb/syscalls.c

+++ libbb/syscalls.c

@@ -58,11 +58,12 @@

 /* These syscalls are not included in ancient glibc versions */

 #if ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))

+#ifndef __x86_64__

 int bdflush(int func, int data)

 {

     return(syscall(__NR_bdflush, func, data));

 }

-

+#endif

 #ifndef __alpha__

 # define __NR_klogctl __NR_syslog

 int klogctl(int type, char *b, int len)

@@ -74,7 +75,9 @@

 int umount2(const char * special_file, int flags)

 {

-#ifndef __NR_pivot_root

+#ifdef __ia64__

+    return(syscall(__NR_umount, special_file, flags));

+#elif !defined __NR_umount2

 #warning This kernel does not support the umount2 syscall

 #warning -> The umount2 system call is being stubbed out...

     /* BusyBox was compiled against a kernel that did not support