[dpdk-dev] mk: fix LDFLAGS for shared lib

[Hiroshi Shimamoto]

> Subject: Re: [dpdk-dev] mk: fix LDFLAGS for shared lib
> 
> On Wed, Dec 03, 2014 at 11:33:54PM +0000, Hiroshi Shimamoto wrote:
> > From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
> >
> > Only CPU_LDFLAGS is used in mk/rte.sharelib.mk.
> > It should be LDFLAGS to build the library with correct linkage options.
> >
> > Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
> > Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>
> >
> > ---
> > mk/rte.sharelib.mk | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/mk/rte.sharelib.mk b/mk/rte.sharelib.mk
> > index c0a811a..df6c268 100644
> > --- a/mk/rte.sharelib.mk
> > +++ b/mk/rte.sharelib.mk
> > @@ -45,7 +45,7 @@ sharelib: $(LIB_ONE) FORCE
> >
> >  OBJS = $(wildcard $(RTE_OUTPUT)/build/lib/*.o)
> >
> > -O_TO_S = $(LD) $(CPU_LDFLAGS) -shared $(OBJS) -o $(RTE_OUTPUT)/lib/$(LIB_ONE)
> > +O_TO_S = $(LD) $(LDFLAGS) -shared $(OBJS) -o $(RTE_OUTPUT)/lib/$(LIB_ONE)
> >  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
> >  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
> >  O_TO_S_CMD = "cmd_$@ = $(O_TO_S_STR)"
> 
> Does this continue to work on cross compiled arches (32 bit on 64 bit systems
> and vice versa)?  I have this recollection that something in CPU_LDFLAGS was
> needed

yes, LDFLAGS must contain CPU_LDFLAGS.

mk/target/generic/rte.vars.mk:# merge all LDFLAGS
mk/target/generic/rte.vars.mk:LDFLAGS := $(CPU_LDFLAGS) $(EXECENV_LDFLAGS) $(TOOLCHAIN_LDFLAGS) $(MACHINE_LDFLAGS)
mk/target/generic/rte.vars.mk:LDFLAGS += $(TARGET_LDFLAGS)

thanks,
Hiroshi

> Neil