root/tools/tools/ncpus/ncpus.c

#include <stdio.h>

extern int acpi_detect(void);
extern int biosmptable_detect(void);

int
main(void)
{
        printf("acpi: %d\n", acpi_detect());
#if defined(__amd64__) || defined(__i386__)
        printf("mptable: %d\n", biosmptable_detect());
#endif
        return 0;
}