From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Panu Matilainen <pmatilai@redhat.com>
Cc: Christian Ehrhardt <christian.ehrhardt@canonical.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] mk: fix underlinking issues of most librte libraries
Date: Tue, 07 Jun 2016 10:23:25 +0200 [thread overview]
Message-ID: <2002436.ZXkkWWzaid@xps13> (raw)
In-Reply-To: <78bbf74c-9621-9094-a280-76ed9fc88393@redhat.com>
2016-05-24 12:56, Panu Matilainen:
> On 05/20/2016 08:08 PM, Thomas Monjalon wrote:
> > 2016-05-20 18:50, Christian Ehrhardt:
> >> The individual libraries have various cross dependencies.
> >> This is already refelcted in the DEPDIR dependency, but not yet in
> >> proper DT_NEEDED flags in the .so's.
> >> This adds the -l flags so that is properly stored in the .so's ELF
> >> headers.
> >
> > Why not filling LDLIBS by parsing DEPDIRS-y in rte.lib.mk?
> >
>
> A fair question :) The thought has passed my mind too, but I thought
> it'd be too messy with differing library vs directory names and other
> exceptions. But in reality manually maintained separate LDLIBS is only
> going to get out of sync sooner or later, and turns out its not that bad
> anyway:
>
> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> index b420280..88b4e98 100644
> --- a/mk/rte.lib.mk
> +++ b/mk/rte.lib.mk
> @@ -77,6 +77,12 @@ else
> _CPU_LDFLAGS := $(CPU_LDFLAGS)
> endif
>
> +# Translate DEPDIRS-y into LDLIBS
> +IGNORE_DEPS = -lrte_eal/% -lrte_net -lrte_compat
We need some comments to explain why they are ignored.
> +_LDDIRS = $(subst librte_ether,libethdev,$(DEPDIRS-y))
> +_LDDEPS = $(subst lib/lib,-l,$(_LDDIRS))
> +LDLIBS += $(filter-out $(IGNORE_DEPS), $(_LDDEPS))
> I'm also sure somebody more familiar with gmake could improve it, but it
> seems to work quite fine here. I'll wait a bit to see if there are other
> suggestions before sending it as a proper patch.
I'm familiar with gmake and I do not think it can be improved more ;)
Please send a patch. Thanks
next prev parent reply other threads:[~2016-06-07 8:23 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-19 15:38 [dpdk-dev] Underlinked libs and overlinked applications - an issue? Christian Ehrhardt
2016-05-19 18:17 ` Thomas Monjalon
2016-05-20 11:01 ` Panu Matilainen
2016-05-20 12:41 ` Christian Ehrhardt
2016-05-20 16:43 ` Christian Ehrhardt
2016-05-20 16:50 ` [dpdk-dev] [PATCH] mk: fix underlinking issues of most librte libraries Christian Ehrhardt
2016-05-20 17:08 ` Thomas Monjalon
2016-05-24 9:56 ` Panu Matilainen
2016-05-24 10:11 ` Christian Ehrhardt
2016-05-26 13:13 ` Ferruh Yigit
2016-05-27 5:59 ` Panu Matilainen
2016-05-27 16:15 ` Ferruh Yigit
2016-05-27 16:48 ` [dpdk-dev] [PATCH 1/2] mk: prevent overlinking in applications Ferruh Yigit
2016-05-27 16:48 ` [dpdk-dev] [PATCH 2/2] mk: reduce scope of whole-archive to pmd libraries Ferruh Yigit
2016-06-10 9:03 ` Thomas Monjalon
2016-06-10 9:57 ` Ferruh Yigit
2016-06-10 10:18 ` Thomas Monjalon
2016-06-10 11:06 ` Ferruh Yigit
2016-06-10 12:21 ` Thomas Monjalon
2016-06-10 13:35 ` Ferruh Yigit
2016-06-09 10:10 ` [dpdk-dev] [PATCH 1/2] mk: prevent overlinking in applications Thomas Monjalon
2016-06-09 13:05 ` Ferruh Yigit
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 0/6] reduce " Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 1/6] mk: sort drivers in static application link list Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 2/6] mk: fix driver dependencies order for static application Thomas Monjalon
2016-06-10 14:49 ` Ferruh Yigit
2016-06-10 14:54 ` Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 3/6] mk: remove library grouping during application linking Thomas Monjalon
2016-06-10 14:54 ` Ferruh Yigit
2016-06-10 15:14 ` Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 4/6] mk: prevent overlinking in applications Thomas Monjalon
2016-06-10 14:56 ` Ferruh Yigit
2016-06-10 15:15 ` Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 5/6] mk: sort libraries in level order when linking Thomas Monjalon
2016-06-10 13:19 ` [dpdk-dev] [PATCH v2 6/6] mk: reduce scope of whole-archive static linking Thomas Monjalon
2016-06-10 15:03 ` Ferruh Yigit
2016-06-10 15:18 ` Thomas Monjalon
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 0/6] reduce overlinking in applications Ferruh Yigit
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 1/6] mk: sort drivers in static application link list Ferruh Yigit
2016-06-10 19:38 ` Wiles, Keith
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 2/6] mk: fix driver dependencies order for static application Ferruh Yigit
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 3/6] mk: sort libraries when linking, move pmd libs to higher level Ferruh Yigit
2016-06-13 9:29 ` Thomas Monjalon
2016-06-13 10:04 ` Ferruh Yigit
2016-06-13 10:21 ` Thomas Monjalon
2016-06-13 10:29 ` Ferruh Yigit
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 4/6] mk: sort libraries when linking, move external libs to lower level Ferruh Yigit
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 5/6] mk: remove library grouping during application linking Ferruh Yigit
2016-06-10 18:32 ` [dpdk-dev] [PATCH v3 6/6] mk: prevent overlinking in applications Ferruh Yigit
2016-06-11 6:34 ` Thomas Monjalon
2016-06-13 9:05 ` Ferruh Yigit
2016-06-13 9:24 ` Christian Ehrhardt
2016-06-13 9:48 ` [dpdk-dev] [PATCH] mk: fix missing DEPDIRS to avoid libarary underlinking Christian Ehrhardt
2016-06-13 10:08 ` Thomas Monjalon
2016-06-13 10:20 ` Christian Ehrhardt
2016-06-13 11:06 ` [dpdk-dev] [PATCH v2 0/2] mk: fix more library underlinking Christian Ehrhardt
2016-06-13 11:06 ` [dpdk-dev] [PATCH v2 1/2] mk: fix missing vhost dependency to pthread to avoid libarary underlinking Christian Ehrhardt
2016-06-13 11:06 ` [dpdk-dev] [PATCH v2 2/2] mk: fix missing DEPDIRS " Christian Ehrhardt
2016-06-13 14:16 ` [dpdk-dev] [PATCH v2 0/2] mk: fix more library underlinking Thomas Monjalon
2016-06-13 14:14 ` [dpdk-dev] [PATCH v2 0/6] reduce overlinking in applications Thomas Monjalon
2016-06-07 8:23 ` Thomas Monjalon [this message]
2016-06-07 9:25 ` [dpdk-dev] [PATCH] mk: fix underlinking issues of most librte libraries Panu Matilainen
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