I got passed chapter 5.4. Binutils-2.27 - Pass 1 - seemed to compile.

I work on Ubuntu 16.04, and I am having issues with permissions for user lfs. I always seem to not have the required permissions for lfs. I have to go back to my own admin account and sudo most commands.

I don't know if that is a part of my current issue, but I proceeded onto chapter 5.5. GCC-6.2.0 - Pass 1 - and got a few errors.

Look for help reviewing the config.log file attached?

Any one willing?

Attached Files

config.log.txt (31.0 KB, 15 views)

I don't know what's causing the immediate error but I can tell you that building in Chapter 5 has to be done as the lfs user to ensure a clean environment. If you don't follow the book at this point, you will just find yourself in more and more trouble. Your real problem therefore is the unsuitable permissions setup that is forcing you to diverge from the book. If you can get that cleaned up, the rest will follow.

Please read again section 3.1, which sets out the correct permissions for $LFS/sources, and Section 4.3, which deals with the lfs user's access to $LFS/sources and $LFS/tools.

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You should never have to use sudo when building the tool chain, if you have to then you have done somthing wrong and you need to correct the mistakes other wise you will have problems later on, as you are now finding out

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Sorry Hazel you type faster than me!

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Ok, all, I will redo the process fixing the logon issue as you all say would be required.

As they say when in doubt follow the directions.

I am making progress here so I appreciate you all hanging in with me.

I am going to read on Ubuntu security issues with users and groups.

I will not move forward again till I have that issue resolved. I will post a comment when I run into issues with the permissions thing.

Thanks so much for your feedback!!

Quick question, should the lfs be placed in the sudo group?

Please be patient with me on these user and security questions

As Hazel recommended I will first resolve the inconsistancies with "Please read again section 3.1, which sets out the correct permissions for $LFS/sources, and Section 4.3, which deals with the lfs user's access to $LFS/sources and $LFS/tools."

No. You will only be working as the lfs user during Chapter 5. The rest of the book is done as root. And, as Keith has pointed out, chapter 5 does not require any use of sudo.

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Found out an interesting point on ubuntu from my experience.

The original user the OS installer creates, ALWAYS requires the sudo prefix to execute commands. Even thought the user us an administrator. I created a standard user in ubuntu and that user is not being required to use sudo constantly, as I previously was.

So I do not know why this is the situation with ubuntu's initial user, but I like what I have found out here. Hopefully it will carry over when I face issues with the user lfs and the group lfs.

I will keep you informed of my progress regarding these permission issues.

Of course the first user has to use sudo with every command he wants to execute as root. If that wasn't so, he would be root. And working all the time as root is very dangerous. That's why, when Ubuntu was designed, they decided not to allow root logins at all. Only sudo access would be allowed. Having to use the sudo prefix all the time keeps your mind focused on the potential dangers of what you are doing.

The lfs user is quite different. It is a normal, unprivileged user with no sudo access. Nothing that this user does in Chapter 5 requires any special privileges. Instead the very special ownership and permissions assigned to $LS/sources and $LFS/tools allow this user to do what is necessary.

I suspect from your last post that you need to read up a bit about root privileges and their purpose before you go any further with LFS.

PS: I hope you are not using sudo with literally every command. You are only supposed to use it with commands that need to be executed as root.

Here's an example of how to follow Chapter 5 instructions properly if you're using say... a Debian LiveDVD:

login: user
passw: live

sudo passwd root
<new root password twice>

If you're in the console (no gui), then logout and back in as root.

If you're in an xterm, kconsole, etc. then "su - root" and use the new root password.

From there you should be able to follow chapter 5 without issue. Just make sure that if you logout you su to root before doing anything the book shows being done from root.

Sudo, on the other hand, does things differently depending on how it is used. In some cases it carries environment variables with it and this is something you do not want when building an LFS system.