Cannot use function cpuset_create from shared C library <cpuset.h> - c

Question

I am trying to port a C project from a CentOS 7 (Core) to an Ubuntu 20.04.1 LTS (Focal Fossa) system. The program compiles and runs without problem on CentOS and also compiles without error on the Ubuntu system. However, when I try to execute the program on Ubuntu, I encounter the following error:
ERROR aff_prog_alloc #aff-executor.c:299 => cpuset_create: No such file or directory
The function cpuset_create is part of the <cpuset.h> library and the flag -lcpuset is included when compiling. The following is the output from the ldd command, showing the path for the <cpuset.h> library on our Ubuntu system:
$ ldd ./aff-executor
linux-vdso.so.1 (0x00007ffed97eb000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8c179d5000)
libcpuset.so.1 => /lib/x86_64-linux-gnu/libcpuset.so.1 (0x00007f8c177c8000)
libbitmask.so.1 => /lib/x86_64-linux-gnu/libbitmask.so.1 (0x00007f8c175c4000)
libnuma.so.1 => /lib/x86_64-linux-gnu/libnuma.so.1 (0x00007f8c175b7000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8c175ac000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8c173ba000)
/lib64/ld-linux-x86-64.so.2 (0x00007f8c17a22000)
I verified that the library actually exists at this location:
$ll /lib/x86_64-linux-gnu/libcpuset.*
-rw-r--r-- 1 root root 67952 Nov 21 2016 /lib/x86_64-linux-gnu/libcpuset.a
lrwxrwxrwx 1 root root 18 Nov 21 2016 /lib/x86_64-linux-gnu/libcpuset.so -> libcpuset.so.1.1.0
lrwxrwxrwx 1 root root 18 Nov 21 2016 /lib/x86_64-linux-gnu/libcpuset.so.1 -> libcpuset.so.1.1.0
-rw-r--r-- 1 root root 52232 Nov 21 2016 /lib/x86_64-linux-gnu/libcpuset.so.1.1.0
Can anyone help with identifying why cpuset_create does not work on this system despite it having the correct syntax and inputs?
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Update/Additional Info
The following code is what I need to use for my project. Everything works fine until the cpuset_create function which has been returning -1. I checked this program on a different Ubuntu (16.04.5 LTS (Xenial Xerus)) and it executed without problem on it, with cpuset_create returning the expected 0.
#define _GNU_SOURCE
#include<stdio.h>
#include <bitmask.h>
#include <cpuset.h>
#include <errno.h>
#include<numa.h>
typedef struct cpuset cpuset_t;
struct bitmask * get_mems_all(void);
/* return a bitmask describing all the available memory nodes */
struct bitmask * get_mems_all(void)
{
struct bitmask *ret;
if (numa_available() != -1){
printf("NUMA is available\n");
return numa_get_mems_allowed();
}
ret = bitmask_alloc(cpuset_mems_nbits());
printf("ret: %p\n",ret );
if (!ret)
printf("bitmask_alloc err");
bitmask_setbit(ret,0);
return ret;
}
int main(){
int err;
struct bitmask *mem_bm;
mem_bm=get_mems_all();
printf("mem_bm: %p\n",mem_bm );
numa_bitmask_clearbit(mem_bm, 1);
numa_bitmask_setbit(mem_bm,0);
char buff[256];
bitmask_displaylist(buff, sizeof(buff), mem_bm);
printf("buff: %s\n",buff );
printf("mem_bm: %p\n",mem_bm );
printf("cpuset lib version: %d\n",cpuset_version() );
cpuset_t *cpuset=cpuset_alloc();
printf("cpuset: %p\n",cpuset );
err = cpuset_setmems(cpuset,mem_bm);
printf("err cpuset_setmems: %d\n", err);
char* path="/AFF_1000/";
err = cpuset_create(path, cpuset);
printf("err cpuset_create: %d\n", err);
return 0;
}
Compilation:
gcc -Wall -O2 -std=gnu99 test.c -o test -lcpuset -lbitmask -lnuma
Output on Ubuntu 20.04.1 LTS (Focal Fossa):
$./test
NUMA is available
mem_bm: 0x55a34b2ac120
buff: 0
mem_bm: 0x55a34b2ac120
cpuset lib version: 3
cpuset: 0x55a34b2ac1d0
err cpuset_setmems: 0
err cpuset_create: -1
Expected output (this is from Ubuntu 16.04LTS (Xenial Xerus)):
$./test
NUMA is available
mem_bm: 0x1c39670
buff: 0
mem_bm: 0x1c39670
cpuset lib version: 3
cpuset: 0x1c396b0
err cpuset_setmems: 0
err cpuset_create: 0
$cset set -l
cset:
Name CPUs-X MEMs-X Tasks Subs Path
------------ ---------- - ------- - ----- ---- ----------
root 0-63 y 0-1 y 500 2 /
AFF_1000 ***** n 0 n 0 0 /AFF_1000
system 0-63 n 0 n 349 0 /system
However, I am unable to run the same program as root on Ubuntu 16.04 as well. I get the following error:
sudo ./test
./test: error while loading shared libraries: libcpuset.so.1: cannot open shared object file: No such file or directory
Does anyone know why this is happening? I do not know if this last problem is related to why my program won't run on the Ubuntu 20.04.