Re: Introduction to Xorg-7: XORG_PREFIX & XORG_CONFIG Weird Issue

________________________________
From: [email protected] <[email protected]> on behalf of Bruce Dubbs <[email protected]>
Sent: Thursday, August 14, 2025 5:53 PM
To: [email protected] <[email protected]>
Subject: Re: [blfs-support] Introduction to Xorg-7: XORG_PREFIX & XORG_CONFIG Weird Issue

On 8/14/25 6:36 PM, azazel xes ([email protected] via blfs-support Mailing List)
wrote:
> Hi,
>
> When following instructions to choose the installation prefix that in my case i
> decided to with /usr, I was never able to pass the value of  $XORG_PREFIX to $XORG_CONFIG
>
> I followed the instructions, double checked that echo $XORG_PREFIX will print /usr
> with a no-root and a root user which was successful in both cases, but when
> copypasting (with the root user):
>
> export XORG_CONFIG="--prefix=$XORG_PREFIX --sysconfdir=/etc \
>      --localstatedir=/var --disable-static"
> If i echo  $XORG_CONFIG  with the root user or a no-root user the output will always
> be an empty value for the --prefix:
>
> echo $XORG_CONFIG="--prefix= --sysconfdir=/etc  --localstatedir=/var --disable-static"
> So creating the /etc/profile.d/xorg.sh was not possible neither because the file will
> always be created with a blank value for XORG_CONFIG, I'm not using zsh as my
> terminal and i also try removing the backslash in front of the dollar sign which was
> unsuccessful too, so I decided to hard code the value /usr to the XORG_CONFIG in /
> etc/profile.d/xorg.sh
>
> Will there be any particular reason for this weird behavior? is it bad that I hard
> coded the prefix value to /usr ?
>
>Why are you doing a copy/paste as root?  We assume that users will use sudo from the
>non-root user and configure sudo with:
>
>cat > /etc/sudoers.d/xorg << EOF
>>Defaults env_keep += XORG_PREFIX
>Defaults env_keep += XORG_CONFIG
>EOF
>
>Alternatively you can run sudo as 'sudo -E'.
>
>   -- Bruce



Sorry, maybe I didn't explain my self in the best way, so yeah I did try sudo -E, sudo su, etc. and follow the instructions as per the book instructed, I even went back to LFS book Sudo section to check that I hadn't missed something, but the result was always the same $XORG_PREFIX will not be passed to $XORG_CONFIG even is echo $XORG_PREFIX will always echo /usr.

Maybe is just something weird on my end, the only thing that I forgot to mention is that I updated sudo from Sudo-1.9.16p2 to Sudo 1.9.17p1 before starting  chapter 24. Graphical Environments not sure if this can be or not relevant to this weird behavior.

Thanks Bruce.

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