[dpdk-stable] [PATCH] pci: fix missing pci bus with shared library build

[Stephen Hemminger]

If DPDK is built as a shared library, then any application linked
with rte.app.mk will not find any PCI devices. When the application
is started no ethernet devices are found.

This is because the link order of libraries on the command line matters.
And PCI is before EAL. That causes there to be no dependency on PCI
so linker ignores linking the library. 
Swapping the order fixes this.

Fixes: c752998b5e2e ("pci: introduce library and driver")
Cc: stable at dpdk.org
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 mk/rte.app.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index a277c808ed8e..470b92e4d73e 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -90,8 +90,8 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_STACK)          += -lrte_stack
 _LDLIBS-$(CONFIG_RTE_DRIVER_MEMPOOL_RING)   += -lrte_mempool_ring
 _LDLIBS-$(CONFIG_RTE_LIBRTE_OCTEONTX2_MEMPOOL) += -lrte_mempool_octeontx2
 _LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
-_LDLIBS-$(CONFIG_RTE_LIBRTE_PCI)            += -lrte_pci
 _LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PCI)            += -lrte_pci
 _LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
 _LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 _LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
-- 
2.20.1