Re: [Qemu-devel] [PATCH v7 2/6] docker: don't rely on submodules existing in the main checkout

[Eric Blake]

On 09/28/2017 07:06 AM, Daniel P. Berrange wrote:
> When building the tarball to pass into the docker/vm test image,
> the code relies on the git submodules being checked out in the
> main checkout.
> 
> ie if the developer has not run 'git submodule update --init dtc'
> many of the docker tests will fail due to the libfdt package not

'dtc' vs. 'libfdt' - is one of the acronyms wrong?

> being present in the test images. Patchew manually checks out the
> dtc submodule in the main git checkout, but this is a bad idea.
> 
> When running tests we want to have a predictable set of submodules
> included in the source that's tested. The build environment is
> completely independant of the developers host OS, so the submodules

s/independant/independent/

> the developer has checked out should not be considered relevant for
> the tests.
> 
> This changes the archive-source.sh script so that it clones the
> current git checkout into a temporary directory, checks out a
> fixed set of submodules, builds the tarball and finally removes
> the temporary git clone.
> 
> Signed-off-by: Daniel P. Berrange <address@hidden>
> ---
>  scripts/archive-source.sh | 30 +++++++++++++++++++++++++++---
>  1 file changed, 27 insertions(+), 3 deletions(-)
> 

> +++ b/scripts/archive-source.sh

> +# We want a predictable list of submodules for builds, that is
> +# independant of what the developer currently has initialized

and again

> +# in their checkout, because the build environment is completely
> +# different to the host OS.
> +submodules="dtc"
>  
>  if test $? -ne 0; then
>      error "git submodule command failed"
> @@ -28,6 +34,21 @@ fi
>  
>  trap "status=$?; rm -f \"$list_file\"; exit \$status" 0 1 2 3 15
>  
> +if git diff-index --quiet HEAD -- &>/dev/null
> +then
> +    HEAD=HEAD
> +else
> +    HEAD=`git stash create`
> +fi
> +git clone --shared . "$vroot_dir"

set -e is not in effect; do you need error checking here?

> +here=`pwd`

$PWD is cheaper than spawning a subprocess for `pwd`.

> +cd "$vroot_dir"

Definitely need error checking here.

> +git checkout $HEAD
> +
> +for sm in $submodules; do
> +    git submodule update --init $sm
> +done
> +
>  if test -n "$submodules"; then
>      {
>          git ls-files || error "git ls-files failed"
> @@ -48,4 +69,7 @@ fi
>  
>  tar -cf "$tar_file" -T "$list_file" || error "failed to create tar file"
>  
> +cd "$here"

and again here

> +rm -rf "$vroot_dir"
> +
>  exit 0
> 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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