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Re: [PATCH v2 1/5] configure: Add the possibility to read options from m
From: |
Eric Blake |
Subject: |
Re: [PATCH v2 1/5] configure: Add the possibility to read options from meson_options.txt |
Date: |
Fri, 3 Sep 2021 12:09:56 -0500 |
User-agent: |
NeoMutt/20210205-739-420e15 |
On Fri, Sep 03, 2021 at 10:13:54AM +0200, Thomas Huth wrote:
> To avoid double maintenance between the configure script and
> meson_options.txt, add some simple logic in the configure script
> to read the options from meson_options.txt.
>
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
> configure | 24 +++++++++++++++++++++++-
> 1 file changed, 23 insertions(+), 1 deletion(-)
>
> diff --git a/configure b/configure
> index 9a79a004d7..528e9c80c5 100755
> --- a/configure
> +++ b/configure
> @@ -836,6 +836,8 @@ fi
>
> werror=""
>
> +meson_options=""
> +
> for opt do
> optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
> case "$opt" in
> @@ -1581,6 +1583,26 @@ for opt do
> ;;
> --disable-slirp-smbd) slirp_smbd=no
> ;;
> + --enable-*)
> + arg=$(printf %s\\n "$opt" | sed -e "s/--enable-//" -e "s/-/_/g")
Sorry for not pointing this out earlier, but if an annoying user
passes:
./configure --'enable-my bad opt'
this results in $arg being set to 'my bad opt'...
> + if ! grep -q "option('$arg', type[ ]*: 'feature'" \
> + $source_path/meson_options.txt; then
> + printf "ERROR: unknown option %s\n" "$opt"
> + printf "Try '%s --help' for more information\n" "$0"
> + exit 1
> + fi
> + meson_options="$meson_options -D$arg=enabled"
...and that breaks $meson_options. Other odd arguments, such as
"--enable-my.*arg" could mess with the grep above. I don't know if we
care about users that go to such lengths to shoot themselves in the
foot, so it's probably not worth trying to guarantee that $opt
consists only of [a-zA-Z0-9_-].
> + ;;
> + --disable-*)
> + arg=$(printf %s\\n "$opt" | sed -e "s/--disable-//" -e "s/-/_/g")
Whatever we decide above, we should repeat here (including the
decision to leave as-is).
> + if ! grep -q "option('$arg', type[ ]*: 'feature'" \
> + $source_path/meson_options.txt; then
> + printf "ERROR: unknown option %s\n" "$opt"
> + printf "Try '%s --help' for more information\n" "$0"
> + exit 1
> + fi
> + meson_options="$meson_options -D$arg=disabled"
> + ;;
> *)
> echo "ERROR: unknown option $opt"
> echo "Try '$0 --help' for more information"
> @@ -5211,7 +5233,7 @@ if test "$skip_meson" = no; then
> -Dvhost_user_blk_server=$vhost_user_blk_server
> -Dmultiprocess=$multiprocess \
> -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek
> -Dguest_agent_msi=$guest_agent_msi -Dbpf=$bpf\
> $(if test "$default_feature" = no; then echo
> "-Dauto_features=disabled"; fi) \
> - -Dtcg_interpreter=$tcg_interpreter \
> + -Dtcg_interpreter=$tcg_interpreter $meson_options \
> $cross_arg \
> "$PWD" "$source_path"
Unless we thing super-robustness is mandatory, I'm okay with:
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
- [PATCH v2 0/5] Use meson_options.txt in the configure script, Thomas Huth, 2021/09/03
- [PATCH v2 2/5] meson_options.txt: Switch the default value for the vnc option to 'auto', Thomas Huth, 2021/09/03
- [PATCH v2 1/5] configure: Add the possibility to read options from meson_options.txt, Thomas Huth, 2021/09/03
- Re: [PATCH v2 1/5] configure: Add the possibility to read options from meson_options.txt,
Eric Blake <=
- [PATCH v2 4/5] configure: Get help text from meson_options.txt, Thomas Huth, 2021/09/03
- [PATCH v2 3/5] configure: Remove options that can be handled via meson_options.txt instead, Thomas Huth, 2021/09/03
- [PATCH v2 5/5] meson_options.txt: Document that "configure" reads this file, too, Thomas Huth, 2021/09/03