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

[Bruce Richardson <bruce.richardson@intel.com>]

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
>