size_t number_of_cpus()
{
size_t number_of_cpu= 1;
-#if defined(TARGET_OS_LINUX) && TARGET_OS_LINUX
+#if defined(__linux) && __linux
number_of_cpu= sysconf(_SC_NPROCESSORS_ONLN);
#elif defined(HAVE_SYS_SYSCTL_H) && defined(CTL_HW) && defined(HW_NCPU) && defined(HW_AVAILCPU) && defined(HW_NCPU)
int mib[4];