Fixup ifdefs for non-glibc linux

driver/others/memory.c

@@ -201,11 +201,14 @@ int get_num_procs(void) {
   cpu_set_t cpuset,*cpusetp;
   size_t size;
   int ret;
+
+#if defined(__GLIBC_PREREQ)
 #if !__GLIBC_PREREQ(2, 7)
   int i;
 #if !__GLIBC_PREREQ(2, 6)
   int n;
 #endif
+#endif
 #endif
 
   if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
@@ -1725,11 +1728,14 @@ int get_num_procs(void) {
   cpu_set_t cpuset,*cpusetp;
   size_t size;
   int ret;
+
+#if defined(__GLIBC_PREREQ)
 #if !__GLIBC_PREREQ(2, 7)
   int i;
 #if !__GLIBC_PREREQ(2, 6)
   int n;
 #endif
+#endif
 #endif
 
   if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);