Re: [dpdk-dev] [dpdk-dev, pcap] pcap: fix build of all-in-one shared library

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2014-12-08 09:49, Neil Horman:
> On Tue, Oct 07, 2014 at 12:14:04AM +0100, stepan wrote:
> > Build of some of the test binaries fails when the following flags are enabled:
> > 
> > CONFIG_RTE_LIBRTE_PMD_PCAP=y
> > CONFIG_RTE_BUILD_SHARED_LIB=y
> > CONFIG_RTE_BUILD_COMBINE_LIBS=y
> > 
> > The binarieas are missing symbols from libpcap. This
> > patch adds the missing '-lpcap' linker flag into the respective Makefiles.
> > 
> > Signed-off-by: stepan <stepan.sojka@adaptivemobile.com>
> > 
> > ---
> > app/cmdline_test/Makefile | 4 ++++
> >  app/dump_cfg/Makefile     | 4 ++++
> >  app/test-acl/Makefile     | 4 ++++
> >  app/test/Makefile         | 4 ++++
> >  4 files changed, 16 insertions(+)
> > 
> > diff --git a/app/cmdline_test/Makefile b/app/cmdline_test/Makefile
> > index e9eafd2..ce44fd5 100644
> > --- a/app/cmdline_test/Makefile
> > +++ b/app/cmdline_test/Makefile
> > @@ -47,6 +47,10 @@ SRCS-y += commands.c
> >  CFLAGS += -O3
> >  CFLAGS += $(WERROR_FLAGS)
> >  
> > +ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> > +LDFLAGS += -lpcap
> > +endif
> > +
> >  include $(RTE_SDK)/mk/rte.app.mk
> >  
> >  endif
> > diff --git a/app/dump_cfg/Makefile b/app/dump_cfg/Makefile
> > index 3257127..513ce59 100644
> > --- a/app/dump_cfg/Makefile
> > +++ b/app/dump_cfg/Makefile
> > @@ -35,6 +35,10 @@ APP = dump_cfg
> >  
> >  CFLAGS += $(WERROR_FLAGS)
> >  
> > +ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> > +LDFLAGS += -lpcap
> > +endif
> > +
> >  # all source are stored in SRCS-y
> >  
> >  SRCS-y := main.c
> > diff --git a/app/test-acl/Makefile b/app/test-acl/Makefile
> > index 43dfdcb..ea063fd 100644
> > --- a/app/test-acl/Makefile
> > +++ b/app/test-acl/Makefile
> > @@ -37,6 +37,10 @@ APP = testacl
> >  
> >  CFLAGS += $(WERROR_FLAGS)
> >  
> > +ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> > +LDFLAGS += -lpcap
> > +endif
> > +
> >  # all source are stored in SRCS-y
> >  SRCS-y := main.c
> >  
> > diff --git a/app/test/Makefile b/app/test/Makefile
> > index 6af6d76..e456140 100644
> > --- a/app/test/Makefile
> > +++ b/app/test/Makefile
> > @@ -145,6 +145,10 @@ CFLAGS_test_kni.o += -Wno-deprecated-declarations
> >  endif
> >  CFLAGS += -D_GNU_SOURCE
> >  
> > +ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> > +LDFLAGS += -lpcap
> > +endif
> > +
> >  # this application needs libraries first
> >  DEPDIRS-y += lib
> >  
> Acked-by: Neil Horman <nhorman@tuxdriver.com>

NAK, it doesn't seem to be the proper fix.
LDFLAGS should be automatically filled in rte.vars.mk.
Will send another proposal.

-- 
Thomas