# if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
# if __GLIBC_PREREQ(2, 16)
# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
# endif
# endif
int OPENSSL_issetugid(void)
{
-# ifdef AT_SECURE
+# ifdef OSSL_IMPLEMENT_GETAUXVAL
return getauxval(AT_SECURE) != 0;
# else
return getuid() != geteuid() || getgid() != getegid();