Hello,

I've just started with Linux From Scratch (6.1)

I have put up a mighty struggle (started over from "scratch" several times), but i keep encountering the same problem.

When i get to chapter 5.7 (adjusting the toolchain) of the online installation manual, i keep getting the following error whilst applying the "specfile" (which i copy-pasted in a file specfile.sh and adjusted a little) :

SPECFILE=`gcc --print-file specs` &&
sed 's@ /mnt/lfs/tools/lib/ld-linux.so.2@ /mnt/lfs/tools/lib/ld-linux.so.2@g' \
$SPECFILE > tempspecfile &&
mv -f tempspecfile $SPECFILE &&
unset SPECFILE

The error i get when trying to execute it:

gcc: unrecognized option '-mtune=pentiumpro'

Besides the fact that i don't even have a pentiumpro architecture, i don't have a clue about where to adjust this "flag"

Any help would be appreciated!!

Hello!

Have a look in the gcc manual.

Greetings

It's --mtune=pentiumpro instead of -mtune=pentiumpro

@ mr_demilord:

Yeah for all i know it might as well be the problem, but the error really states :

gcc: unrecognized option '-mtune=pentiumpro' .

If I understand correctly, I have to find some sort of configuration file that "gives" the (false) -mtune setting and correct it.

I will read the gcc manual, as suggested by Keruskerfürst, maybe it'll provide some answers as to where this file is to be found.

Tnx for the quick replies!!!!

I just "read" the gcc manual and i think i found the problem.

I have to change the -mtune=pentiumpro flag to -mtune=pentium3 .

The manual didn't state however, which file(s?) needs to be edited in order to do this. I did some googling and stumbled upon a gentoo installation manual that referred to a make.conf file in the /etc directory, but there is no make.conf file on my LFS installation yet.....

You know if you use optizimation flags on critical packages like GCC binutils for example that the build has a higher chance to fail and will fail and the speed increasment is 0%.

The book doesn't warn the people without a reason..

If I was you, I'll only use optmization flags on less critical packages like mozilla products openoffice gimp media players like xine.

my 2 cents

@mr_demilord

Im aware of this. My problem is not how to set flags, but to how UNSET them. I have followed the book almost to the letter (and i most definately didn't specify any pentium pro flags, i don't even have a pentium pro machine), and i didn't specify any pentium pro flags, but the gcc "compiler" (if i use the right word....) magically seems to presume it.

I have reread the LFS book, but it doesn't mention how to set or unset the -mtune flag (let alone how to alter it) .

Maybe i should try to install LFS on a different machine? Or with a preinstalled linux machine (i'm using the CD as start operating system right now)?

Grtz

Sorry I didn't read it to well, my apologises.
It should work with the LFS cd, it's very strange

I found a way to unset it.

Open up a terminal
type in <unset CFLAGS>
and <unset CXXFLAGS>
and it should unset the optimizations flags..
hope it helps..

After a couple of retries, i discovered that my problem had something to do with the way i tried to implement the specfile.

I copy-pasted the whole section to a " specfile.s " file (on a windows xp machine...).

I then tried to execute the file with " ./specfile.s (on the LFS system)" . For some (probably very obvious) reason, this didn't work. As I couldn't think of any other way to copy - paste things, i tried to type it manually and behold: things worked.

I am well underway with my LFS installation again :P.

I hope this will help somebody else out...

Tnx for all the replies,

Ruben

That fixed the problem for me, I'm using a Pentium IV.

For those who're wondering, when copying the whole line I had to include the greater than (>) symbol when I was cutting and pasting from the book examples (originally, I just assumed it was to reflect how the terminal looked.) For the record, when using the 'unset' commands, it should look like: