Re: Dump commands

Rainer Fiebig ([email protected] via lfs-support Mailing List) <[email protected]>
Newsgroups gmane.linux.lfs.support
Message-ID <[email protected]>
Am 13.08.26 um 13:09 schrieb Pocket ([email protected] via
lfs-support Mailing List):
> 
> 
> On 8/13/26 06:58, Rainer Fiebig ([email protected] via lfs-support Mailing
> List) wrote:
>> Am 13.08.26 um 03:41 schrieb Bruce Dubbs ([email protected] via
>> lfs-support Mailing List):
>>> On 8/12/26 2:51 PM, Pocket ([email protected] via lfs-support
>>> Mailing List) wrote:
>>>>
>>
>> / snip /
>>
>>>> case $(uname -m) in
>>>>     x86_64) chown -v lfs
>>>>    $LFS/lib64 ;;
>>>> esac
>> / snip /
>>
>> Successful execution of
>>
>>     chown -v lfs $LFS/lib64
>>
>> does not depend on whether the machine is x86_64 or not but whether
>> directory "$LFS/lib64" exists or not.  That directory was already
>> created (or not) in ch. 4.2:
>>
>> case $(uname -m) in
>>    x86_64) mkdir -pv $LFS/lib64 ;;
>> esac
>>
>> So the test in ch. 4.3 should _not_ be
>>
>> case $(uname -m) in ...
>>
>> but rather
>>
>> if [[ -d $LFS/lib64 ]]; then
>>     chown -v lfs $LFS/lib64
>> fi
>>
>> Apart from that I'm not sure whether using multi-way decision-test
>> "case" for a one-way test is really a good choice for an educational
>> project.  At least not without a default case.
>>
>> BTW: I think that the dot after the last digit in chapter-headings like
>>     4.3. Adding the LFS User
>> is wrong or at least quite unusual.
>>
>>
>> Rainer
>>
>>
> 
> I have no idea how to grok what you posted.

I didn't reply to your post.  I only quoted part of it to make aware of
an inconsistency in the book's instructions.  Bruce will probably know
what I mean.

> 
> The segment I posted was to informational as it is missing the trailing '\'
> 
> But since you brought it up....
> 
> 4.2. Creating a Limited Directory Layout in the LFS Filesystem
> 
>  Note
> 
> The LFS editors have deliberately decided not to use a /usr/lib64
> directory. Several steps are taken to be sure the toolchain will not use
> it. If for any reason this directory appears (either because you made an
> error in following the instructions, or because you installed a binary
> package that created it after finishing LFS), it may break your system.
> You should always be sure this directory does not exist.
> 
> 
> But the book does create lib64 directories,  then tells you is will
> break your system.

Only /usr/lib64 will break the system.  It may be created by a package
that you installed.  I once had this problem with (IIRC)
"extra-cmake-modules".  Since then I have a guard in my build-system:

	if [[ -d /usr/lib64 ]]; then
		sudo mv -vf /usr/lib64{,.NOUSE}
	fi

This is run before any package is being built.

Rainer

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