[dpdk-dev] how to compile kernel drivers only

["Montorsi, Francesco" <fmontorsi@empirix.com>]

Hi all,

I'm trying to compile DPDK kernel drivers (i.e., igb_uio.ko and kni.ko if I got it right) only on a certain machine.
On that machine, I'm not interested in anything else. how can I tweak .config file to achieve it?

I have tried to set all options to =n, except for:

CONFIG_RTE_LIBRTE_EAL=y
CONFIG_RTE_LIBRTE_EAL_LINUXAPP=y
CONFIG_RTE_EAL_IGB_UIO=y
CONFIG_RTE_EAL_VFIO=y
CONFIG_RTE_LIBRTE_KNI=y

But then I get a compile error about app/dump_cfg:

== Build app/dump_cfg
  CC main.o
  LD dump_cfg
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_common_log.o): In function `rte_eal_common_log_init':
eal_common_log.c:(.text+0x1b0): undefined reference to `rte_mempool_create'
eal_common_log.c:(.text+0x1fe): undefined reference to `rte_mempool_lookup'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_pci_uio.o): In function `pci_uio_map_resource':
eal_pci_uio.c:(.text+0x4dd): undefined reference to `rte_zmalloc'
eal_pci_uio.c:(.text+0x873): undefined reference to `rte_malloc'
eal_pci_uio.c:(.text+0x9bf): undefined reference to `rte_malloc'
eal_pci_uio.c:(.text+0xb0a): undefined reference to `rte_malloc'
eal_pci_uio.c:(.text+0xc55): undefined reference to `rte_malloc'
eal_pci_uio.c:(.text+0xda6): undefined reference to `rte_malloc'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_pci_uio.o):eal_pci_uio.c:(.text+0xf00): more undefined references to `rte_malloc' follow
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_pci_uio.o): In function `pci_uio_map_resource':
eal_pci_uio.c:(.text+0x10e4): undefined reference to `rte_free'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_interrupts.o): In function `rte_intr_callback_unregister':
eal_interrupts.c:(.text+0x7b6): undefined reference to `rte_free'
eal_interrupts.c:(.text+0x7f2): undefined reference to `rte_free'
eal_interrupts.c:(.text+0x84c): undefined reference to `rte_free'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_interrupts.o): In function `rte_intr_callback_register':
eal_interrupts.c:(.text+0x8fb): undefined reference to `rte_zmalloc'
eal_interrupts.c:(.text+0x96f): undefined reference to `rte_zmalloc'
eal_interrupts.c:(.text+0xac4): undefined reference to `rte_free'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_alarm.o): In function `rte_eal_alarm_cancel':
eal_alarm.c:(.text+0xa4): undefined reference to `rte_free'
eal_alarm.c:(.text+0x128): undefined reference to `rte_free'
eal_alarm.c:(.text+0x156): undefined reference to `rte_free'
eal_alarm.c:(.text+0x1d3): undefined reference to `rte_free'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_alarm.o): In function `rte_eal_alarm_set':
eal_alarm.c:(.text+0x31e): undefined reference to `rte_zmalloc'
dpdk/dpdk-2.0.0/x86_64-native-linuxapp-gcc/lib/librte_eal.a(eal_alarm.o): In function `eal_alarm_callback':
eal_alarm.c:(.text+0x59e): undefined reference to `rte_free'


How can I avoid building any app like dump_cfg?

Thanks!
Francesco