GCC and LD problem

[supagu]

okay i removed all underscore prefixes, this fixed a few problems, i also had to change nasm to use elf instead of coff, this fixed the rest

[INF1n1t]

Yes, I also had several problems (ld couldn't find kernel_main). I thought as they said on the tutorials, but when I looked at the KERNEL.O file, which gcc had produced, I saw that gcc did not put any underscores at all. So I learned my lesson!

But dude, check it out: ld give me something very funny. I have defined a symbol in the linkerscript, called phys. And when I try to use it, ld says that phys is not defined! It's very strange. What do you think about that?

And the last thing, the toolchain didn't worked, but the cross-compiler tutorial on the wiki works very well!

[supagu]

yeah i followed that tut, had some troubles with it, but managed to get it to work.

How ever i want to be able to compile c++ as well, which the wiki didnt cover enough.
I've downloaded the g++ tar file from the site (http://ftp.gnu.org/gnu/gcc/gcc-4.0.2/) extracted it over the top of the extracted core files.

Now i try to run "make all-gcc" which fails with the following:

checking build system type... i686-pc-cygwin
checking host system type... i686-pc-cygwin
checking target system type... Invalid configuration `i585-elf': machine `i585'
not recognized
configure: error: /bin/sh ../../gcc-4.0.2/gcc/../config.sub i585-elf failed
make: *** [configure-gcc] Error 1

so once again im stuck

[ehird]

i586 not i585

[INF1n1t]

yeah i followed that tut, had some troubles with it, but managed to get it to work.

How ever i want to be able to compile c++ as well, which the wiki didnt cover enough.
I've downloaded the g++ tar file from the site (http://ftp.gnu.org/gnu/gcc/gcc-4.0.2/) extracted it over the top of the extracted core files.

Now i try to run "make all-gcc" which fails with the following:

checking build system type... i686-pc-cygwin
checking host system type... i686-pc-cygwin
checking target system type... Invalid configuration `i585-elf': machine `i585'
not recognized
configure: error: /bin/sh ../../gcc-4.0.2/gcc/../config.sub i585-elf failed
make: *** [configure-gcc] Error 1

so once again im stuck

Well, I can tell you that it is not i585 but i586...you have a wrong $TARGET. You should type i586-elf...

I've also created a makefile to compile my project and now I'm very happy. 10x to all of you, guys!

Edit: I just see now that ehird was faster then me! But I didn't see the post yesterday!

[supagu]

okay a rebuild of gcc fixes it

[evilhamburger]

Yes, I'm bumping an old post.


I'm having trouble setting up my cross compiler.

I have versions of bin utils and GCC that the wiki says works, and I have cygwin.

it chokes on the
"make all-gcc"
line.

I have tried different targets, different versions of GCC and Binutils too.

I am trying to compile from 32bit Windows 7, targeting ELF on the x64 arch.

Does anyone have an existing cross compiler I can borrow?

[skyking]

I have versions of bin utils and GCC that the wiki says works, and I have cygwin.

it chokes on the
"make all-gcc"
line.

That's not a very distinctive description of the problem. What kind of diagnostics do the make/compiler output?

[evilhamburger]

oh it's something wrong with the makefile (I don't use make at all... so I'm not good with these errors)

../../gcc-4.4.2/gcc/cp/make-lang.in:190: *** target pattern contains no '%'. Stop.
make[1]: Leaving directory 'cygdrive/e/build-gcc/gcc'
make: *** [all-gcc] Error 2

[Solar]

• Did you follow the tutorial exactly?
• What is the version of binutils you're using?
• Did you follow the tutorial exactly?
• What is the version of GCC you're using? (Well, it appears to be v4.4.2, I just want to be a pain at this point. )
• Did you follow the tutorial exactly?
• What is the version of make you're using ('make -v')?
• What is the exact command sequence you've been using (i.e., did you follow the tutorial exactly)?
• Is that really the error message? (It is very important to post everything from the topmost, i.e., first error message.)

[evilhamburger]

Sorry, was on camp.

- Tutorial followed to the letter
- That is the first error message I get
- Bin utils V= 2.20 (Version I am building and version I am building with, but targeting a different platorm)
- GCC V = 4.4.2 (As above)
- GNU Make 3.81

[Combuster]

make[1]: Leaving directory 'cygdrive/e/build-gcc/gcc'

- Tutorial followed to the letter

I hate to ruin your dreams, but you didn't.

[evilhamburger]

I changed a folder. Hardly a tutorial breaker.

[evilhamburger]

Make that...

I changed the root folder.
The structure after that is the same.

[AJ]

I changed a folder. Hardly a tutorial breaker.

How many other things have been changed too?

Follow the tutorial to the letter and then when it works, try again with any changes you want to make.

Having said that, some things to consider:
* If you are running Windows 7, did you install and run Cygwin as an administrator? I believe this has made a difference to me in the past and could be worth a shot. I don't know how much difference this currently makes, because I run with UAC disabled.
* Are you able to build the basic i[5/6]86 version, or does it just fail with x64?
* What version of Cygwin are you using? TBH, I have never used the cross-compiler tutorial on 1.7 - I just transferred my version build on 1.5, but have just downloaded all the latest versions of GMP, MPFR, GCC and Binutils and am running through the tutorial on Cygwin 1.7 now. I'll post back any anomalies, but if (when ) it works, will add a note on the wiki page.

I originally had problems with making the cross compiler, and never figured out what the problem was - probably not following something properly. Since that time, I've never since had an issue. In the meantime, I used someone else's precompiled versions, but it was never as satisfying!

Cheers,
Adam