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Re: [Qemu-devel] [PATCH] configure: Don't exit until all errors have bee
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] configure: Don't exit until all errors have been detected |
Date: |
Thu, 21 May 2015 12:53:58 +0100 |
On 8 May 2015 at 13:40, Juan Quintela <address@hidden> wrote:
> Currently, it exits until each error, so if you are installing on a new
> machine, it requires lots of configure runs until you get all the
> dependencies that you need. With this change, it shows all the errors
> with the selected configured options.
>
> Signed-off-by: Juan Quintela <address@hidden>
> ---
> configure | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/configure b/configure
> index b18aa9e..1d7966b 100755
> --- a/configure
> +++ b/configure
> @@ -38,6 +38,8 @@ printf " '%s'" "$0" "$@" >> config.log
> echo >> config.log
> echo "#" >> config.log
>
> +has_errors="no"
> +
> error_exit() {
> echo
> echo "ERROR: $1"
> @@ -46,7 +48,7 @@ error_exit() {
> shift
> done
> echo
> - exit 1
> + has_errors="yes"
> }
This will cause problems in some cases which assume that
they're protected by an error_exit, or which at least
will cause a lot of spurious errors later on:
* python version check assumes python exists
* you really want to bail out early if the C compiler
test fails
* not having pkg-config is going to cause a lot of
follow-on errors
Also it makes the function name pretty misleading.
I would suggest changing this function to just error,
and having error_exit for the few cases where we really
do want to bail out early.
> +
> +if [ "x$has_errors" == "xyes" ]; then
The POSIX shell string equality operator is "=".
"==" is a bashism and won't work on other shells.
Also, you don't need the 'x' here, so
if [ "$has_errors" = "yes" ]; then
will do.
> + echo "There are errors with this configuration. Exiting."
> + exit 1;
> +fi
As per discussion on IRC, this should go further up.
thanks
-- PMM