Re: [PATCH v10 6/6] devtools: expand meson cross compiling test coverage

[Gavin Hu <Gavin.Hu@arm.com>]

Hi Bruce,

I submitted v11, please have a look, thanks for your review.

Best Regards,
Gavin

> -----Original Message-----
> From: Bruce Richardson <bruce.richardson@intel.com>
> Sent: Friday, June 15, 2018 10:15 PM
> To: Gavin Hu <Gavin.Hu@arm.com>
> Cc: dev@dpdk.org; nd <nd@arm.com>; stable@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v10 6/6] devtools: expand meson cross
> compiling test coverage
> 
> On Fri, Jun 15, 2018 at 06:21:43PM +0800, Gavin Hu wrote:
> > The default test script covers only default host cc compiler, either
> > gcc or clang, the fix is to cover both, gcc and clang. And also the
> > build dirs are changed to *-host-$c, indicating the difference of cc used.
> >
> > Fixes: a55277a788 ("devtools: add test script for meson builds")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Gavin Hu <gavin.hu@arm.com>
> > Reviewed-by: Phil Yang <phil.yang@arm.com>
> > Reviewed-by: Song Zhu <song.zhu@arm.com>
> > ---
> 
> Apologies, some late comments inline below that I missed on previous
> reviews.
> 
> >  devtools/test-meson-builds.sh | 13 +++++++++++--
> >  1 file changed, 11 insertions(+), 2 deletions(-)
> >
> > diff --git a/devtools/test-meson-builds.sh
> > b/devtools/test-meson-builds.sh index 9bb5b93bd..f1553b7bd 100755
> > --- a/devtools/test-meson-builds.sh
> > +++ b/devtools/test-meson-builds.sh
> > @@ -44,11 +44,20 @@ done
> >  # test compilation with minimal x86 instruction set  build
> > build-x86-default -Dmachine=nehalem
> >
> > +# compile the general v8a also for clang to increase coverage
> > +f=config/arm/arm64_armv8_linuxapp_gcc
> > +export CC="ccache clang"
> > +build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2)-host-clang \
> > +	--cross-file $f
> > +
> 
> This might be better just as e.g.
> 
> +export CC="ccache clang"
> +build build-arm64-host-clang --cross-file
> +config/arm/arm64_armv8_linuxapp_gcc
> 
> to be shorter and more readable. You don't really need the armv8 part in the
> directory name, as it's primarily a test of the clang host build, so you can omit
> it to shorten the command to a single line with all hardcoded values, which is
> more readable than a version with tr filename mangling.
> 
> >  # enable cross compilation if gcc cross-compiler is found  for f in
> > config/arm/arm*gcc ; do
> >  	c=aarch64-linux-gnu-gcc
> >  	if ! command -v $c >/dev/null 2>&1 ; then
> > -		continue
> > +		echo "## ERROR: $c is missing..."
> > +		exit 1
> 
> I think this if check should be moved out of the block, and be before the test
> with clang, since that clang test will also fail.
> 
> >  	fi
> > -	build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2) --cross-file $f
> > +	export CC="ccache gcc"
> > +	build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2)-host-gcc \
> > +		--cross-file $f
> >  done
> > --
> > 2.11.0
> >