From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH v8 05/13] telemetry: add client feature and
 sockets
Date: Thu, 25 Oct 2018 21:44:25 +0100
Message-ID: <20181025204424.GA4552@bricha3-MOBL.ger.corp.intel.com>
References: <20181024132725.5142-1-kevin.laatz@intel.com>
 <20181024160311.85457-6-kevin.laatz@intel.com>
 <1665076.LlyA82DdBn@xps> <3330387.zQnsHCFWfj@xps>
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Cc: Kevin Laatz <kevin.laatz@intel.com>, dev@dpdk.org,
 harry.van.haaren@intel.com, stephen@networkplumber.org,
 gaetan.rivet@6wind.com, shreyansh.jain@nxp.com,
 mattias.ronnblom@ericsson.com, Ciara Power <ciara.power@intel.com>,
 Brian Archbold <brian.archbold@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>
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On Thu, Oct 25, 2018 at 10:41:53PM +0200, Thomas Monjalon wrote:
> 25/10/2018 22:29, Thomas Monjalon:
> > 24/10/2018 18:03, Kevin Laatz:
> > > --- a/lib/librte_telemetry/meson.build
> > > +++ b/lib/librte_telemetry/meson.build
> > > @@ -5,3 +5,5 @@ sources = files('rte_telemetry.c')
> > >  headers = files('rte_telemetry.h', 'rte_telemetry_internal.h')
> > >  deps += ['metrics', 'ethdev']
> > >  cflags += '-DALLOW_EXPERIMENTAL_API'
> > > +jansson = cc.find_library('jansson', required: true)
> > > +ext_deps += jansson
> > 
> > I just discovered an issue when trying to compile for arm64
> > (with devtools/test-meson-builds.sh):
> > 
> > /usr/lib/gcc/aarch64-linux-gnu/8.2.0/../../../../aarch64-linux-gnu/bin/ld:
> > 	cannot find -ljansson
> > 
> > I am worried because it is a real blocker.
> 
> The dependency must be optional.
> Should we disable the library if jansson is not found?
>
Yes, it should be.

Needs:

	jansson = cc.find_library('jansson', required: false)
	build = jansson.found()


/Bruce