5.7. Adjusting the Toolchain

yanger · 11-07-2005, 08:31 PM

at the end of the page, it cautions that it's time to test that toolchain is properly working...

Quote:

Caution

At this point, it is imperative to stop and ensure that the basic functions (compiling and linking) of the new toolchain are working as expected. To perform a sanity check, run the following commands:

echo 'main(){}' > dummy.c
cc dummy.c
readelf -l a.out | grep ': /tools'

If everything is working correctly, there should be no errors, and the output of the last command will be of the form:

[Requesting program interpreter:
/tools/lib/ld-linux.so.2]

Note that /tools/lib appears as the prefix of the dynamic linker.

k.. i created the dummy.c file, and did cc dummy.c (also tried gcc dummy.c) .. and i get this output:

Code:

gcc: unrecognized option '-mtune=pentiumpro'

and it stalls there forever (left it for about 20 minutes) .... a CTRL-C breaks it, and nothing seems to of happened.

... never got to the readelf part at all...

I am doing this on a Notebook - Compaq Armada 7800, P2 266mhz, 256mb RAM PC66, 5GB HDD, using the LFS livecd..

everything seemed fine until now - for now i'm halting this project until i can figure this out

thanks if anyone can help.

wraycarr · 11-08-2005, 04:47 AM

If I understand you correctly, you've updated your toolchain to the most current stable versions of the build tools. I think that means that you are using gcc-3.3.6 or higher. In that case, I don't believe you can use "-mtune" any more. The correct option for gcc-3.x compilers is "-march=pentiumpro" to produce code that is optimized for and will run on nothing less than a pentium pro or and AMD K6, or "-with-cpu=pentiumpro" for code that contains optimizations for the pentium pro and K6, but will still run on anything down to an 80386, but no lower. If you enter the command "gcc --version" what answer do you get? If it's 3.x.x, I think you will have to update your compiler options.

Regards,
Raymond

Stephann · 11-12-2008, 04:52 AM

Since I had the same problem, I found the solution here: