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From: Bruce Richardson <bruce.richardson@intel.com>
To: Lance Richardson <lance.richardson@broadcom.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] build: support i686 target on x86 64-bit hosts
Date: Fri, 25 Sep 2020 14:44:36 +0100
Message-ID: <20200925134436.GB943@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <CADyeNED-vKaV8cbAhyL3_3LR+Yeq2nPdCyABbPtRwT4of0gyAw@mail.gmail.com>

On Fri, Sep 25, 2020 at 09:27:25AM -0400, Lance Richardson wrote:
> On Fri, Sep 25, 2020 at 5:13 AM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > On Thu, Sep 24, 2020 at 12:37:42PM -0400, Lance Richardson wrote:
> > > Add meson cross files for building i686 targets using gcc on x86_64
> > > linux hosts.
> > >
> > > Uusage example:
> > >
> > >     meson --cross-file config/x86/cross-i686-linux-gcc build-i686
> > >     ninja -C build-i686
> > >
> > > Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> > > ---
> > > Red Hat distros use a different name for the 32-bit pkg-config
> > > command from most other distros, maybe there is a better way
> > > to handle this than using separate files.
> > >
> > > Others will probably have better naming suggestions for the files.
> > >
> > Just to note that rather than using cross-files, building i686 on x86_64
> > should be possible by just setting environment variables.
> >
> > For example, on Ubuntu 20.04, this works for me:
> >
> > PKG_CONFIG_LIBDIR=/usr/lib/i386-linux-gnu/pkgconfig CFLAGS='-m32' LDFLAGS='-m32' meson --werror build-32bit
> > ninja -C build-32bit/
> >
> > For Fedora or Redhat system the PKG_CONFIG_LIBDIR will be different (I
> > think just /usr/lib/pkgconfig), but the rest should work identically.
> >
> > /Bruce
> 
> Thanks, that does work, although I'll have some trouble remembering it
> for future
> use (unlike using cross-files). Googling for "PKG_CONFIG_LIBDIR meson dpdk"
> did lead me to this discussion, which makes it sound like cross-files
> might still
> worthy of consideration:
> 
>    https://patches.dpdk.org/patch/69067/
> 

Yes, absolutely the cross-file is worthy of consideration. The most awkward
part in both cases is getting the 32-bit pkg-config right.

  reply	other threads:[~2020-09-25 13:44 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-24 16:37 Lance Richardson
2020-09-25  9:13 ` Bruce Richardson
2020-09-25 13:27   ` Lance Richardson
2020-09-25 13:44     ` Bruce Richardson [this message]
2020-09-25 14:08       ` Lance Richardson
2020-09-25 14:28         ` Bruce Richardson
2020-09-25 14:48           ` Ferruh Yigit
2020-10-06  8:30     ` Thomas Monjalon
2020-10-06 14:35       ` Lance Richardson
2020-11-06 17:54         ` Thomas Monjalon
2020-11-06 18:02           ` Lance Richardson

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