AC_CHECK_LIB(user32, main)
AC_CHECK_LIB([kernel32], [CreateMutex])
AC_CHECK_LIB([pthread], [pthread_mutex_init])
AC_CHECK_LIB(user32, main)
AC_CHECK_LIB([kernel32], [CreateMutex])
AC_CHECK_LIB([pthread], [pthread_mutex_init])
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(windows.h)
AC_CHECK_FUNCS([pthread_create])
AC_CHECK_FUNCS([pthread_rwlock_init])
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(windows.h)
AC_CHECK_FUNCS([pthread_create])
AC_CHECK_FUNCS([pthread_rwlock_init])