buildroot to build toolchain on Linux

Hi Sam,

Which linux distribution do you use? what is your gcc version, try "gcc -v" to find out.

I have updated with a new build shell script. Please check the update, and let me know if you have any problems.

Hippo

Hi hippo,

thanks for the patch for jtag_uart.

The other error is fixed : it can be useful for other : when I first compiled buildroot, I had an error about 2 missing files (ansidecl.h and symcat.h) when compiling elf2flt. To fix this I made a find, and I found them in gcc3 sources, so I made a symlink to them. This is dangerous because it worked with no error, but apparently it was not the right files... I installed binutils-dev (the debian package, which contains those files), and it works correctly now.

Thanks again

Pierre-olivier

Hi cetic,

1. missing jtag uart port: add it to include/linux/serial_core.h, download attached kernel2_04.zip

cd ~/download
unzip kernel2_04.zip
cd ~/linux-2.6.15.2
patch -p0 <~/download/linux-2.6.15.2-nios2-04.diff

2. missing elf2flt for busybox, download attached busybox_110.zip

add the elf2flt stuf to busybox Makefile

cd ~/download
unzip busybox_110.zip
cd ~/buildroot/build_nios2/busybox-1.1.0
patch -p1 <~/download/busybox-110.diff
rm busybox
make
cd ~/buildroot
make

check again with flthdr.

then rebuild kernel.

Or you may try post#4, to rebuild toolchain.

Hippo

Hi all,

thanks Hippo for this post, this is very interesting, however I have 2 questions :

- in the post regarding your port of linux-2.6.15.2, when I try to enable the JTAG uart, I get an error message :

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

CC drivers/serial/altera_juart.o

drivers/serial/altera_juart.c: In function `jtaguart_type&#39;:

drivers/serial/altera_juart.c:285: error: `PORT_JTAG_UART&#39; undeclared (first use in this function)

drivers/serial/altera_juart.c:285: error: (Each undeclared identifier is reported only once

drivers/serial/altera_juart.c:285: error: for each function it appears in.)

drivers/serial/altera_juart.c: In function `jtaguart_config_port&#39;:

drivers/serial/altera_juart.c:311: error: `PORT_JTAG_UART&#39; undeclared (first use in this function)

drivers/serial/altera_juart.c: In function `jtaguart_verify_port&#39;:

drivers/serial/altera_juart.c:322: error: `PORT_JTAG_UART&#39; undeclared (first use in this function)

drivers/serial/altera_juart.c: At top level:

drivers/serial/altera_juart.c:335: warning: initialization from incompatible pointer type

drivers/serial/altera_juart.c:336: warning: initialization from incompatible pointer type

make[2]: *** [drivers/serial/altera_juart.o] Error 1

make[1]: *** [drivers/serial] Error 2

make: *** [drivers] Error 2[/b]

--- Quote End ---

- it seems that I have a problem with the elf2flt : when I try to execute

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

nios2-linux-uclibc-flthdr build_nios2/busybox-1.1.0/busybox[/b]

--- Quote End ---

I get an error message :

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

Cannot read header of ../buildroot/build_nios2/busybox-1.1.0/busybox[/b]

--- Quote End ---

and when I run the kernel, I get a bad magic error, which, I think, means that the format of busybox is not flt.

Have you any idea on how to solve this ?

Thanks a lot

Best regards

Pierre-olivier

Hey Hippo,

why i don&#39;t find bin folder in ~/buildroot/build_nios2/staging_dir? Whether i need use the same as your fedora environment and install compat-gcc or not.

Thanks a lot.

Sam

mkdir -p /home/samchou/buildroot/toolchain_build_nios2

bzcat /home/samchou/buildroot/dl/uClibc-20060116.tar.bz2 | tar -C /home/samchou/ buildroot/toolchain_build_nios2 -xf -

toolchain/patch-kernel.sh /home/samchou/buildroot/toolchain_build_nios2/uClibc toolchain/uClibc/ \*.patch

touch /home/samchou/buildroot/toolchain_build_nios2/uClibc/.unpacked

cp toolchain/uClibc/uClibc.config /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,^CROSS_COMPILER_PREFIX=.*,CROSS_COMPILER_PREFIX="/home/samchou/buildroot/build_nios2/staging_dir/bin/nios2-linux-uclibc-",g&#39;

-e &#39;s,# TARGET_nios2 is not set,TARGET_nios2=y,g&#39;

-e &#39;s,^TARGET_ARCH="none",TARGET_ARCH=\"nios2\",g&#39;

-e &#39;s,^KERNEL_SOURCE=.*,KERNEL_SOURCE=\"/home/samchou/buildroot/toolchain_build_nios2/linux\",g&#39;

-e &#39;s,^RUNTIME_PREFIX=.*,RUNTIME_PREFIX=\"/\",g&#39;

-e &#39;s,^DEVEL_PREFIX=.*,DEVEL_PREFIX=\"/usr/\",g&#39;

-e &#39;s,^SHARED_LIB_LOADER_PREFIX=.*,SHARED_LIB_LOADER_PREFIX=\"/lib\",g&#39;

/home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,^.*UCLIBC_HAS_LFS.*,UCLIBC_HAS_LFS=y,g&#39; /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,.*UCLIBC_HAS_WCHAR.*,UCLIBC_HAS_WCHAR=y,g&#39; /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,# UCLIBC_HAS_THREADS is not set,UCLIBC_HAS_THREADS=y,g&#39; /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,# PTHREADS_DEBUG_SUPPORT is not set,PTHREADS_DEBUG_SUPPORT=y,g&#39; /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

/home/samchou/buildroot/toolchain_build_nios2/bin/sed -i -e &#39;s,# LINUXTHREADS_OLD is not set,LINUXTHREADS_OLD=y,g&#39; /home/samchou/buildroot/toolchain_build_nios2/uClibc/.config

mkdir -p /home/samchou/buildroot/toolchain_build_nios2/uClibc_dev/usr/include

mkdir -p /home/samchou/buildroot/toolchain_build_nios2/uClibc_dev/usr/lib

mkdir -p /home/samchou/buildroot/toolchain_build_nios2/uClibc_dev/lib

make -C /home/samchou/buildroot/toolchain_build_nios2/uClibc

PREFIX=/home/samchou/buildroot/toolchain_build_nios2/uClibc_dev/

DEVEL_PREFIX=/usr/

RUNTIME_PREFIX=/home/samchou/buildroot/toolchain_build_nios2/uClibc_dev/

HOSTCC="gcc"

pregen install_dev;

make[1]: /home/samchou/buildroot/build_nios2/staging_dir/bin/nios2-linux-uclibc-gcc: Command not found

make[1]: Entering directory `/home/samchou/buildroot/toolchain_build_nios2/uClibc&#39;

make[1]: /home/samchou/buildroot/build_nios2/staging_dir/bin/nios2-linux-uclibc-gcc: Command not found

&#65533;&#65533;&#65533;&#65533;*make -C extra/config conf

make[2]: /home/samchou/buildroot/build_nios2/staging_dir/bin/nios2-linux-uclibc-gcc: Command not found

make[2]: Entering directory `/home/samchou/buildroot/toolchain_build_nios2/uClibc/extra/config&#39;

make[2]: /home/samchou/buildroot/build_nios2/staging_dir/bin/nios2-linux-uclibc-gcc: Command not found

&#65533;&#65533;&#65533;&#65533;*make[2]: *** No rule to make target `|&#39;, needed by `../../extra/config/conf.o&#39;. Stop.

make[2]: Leaving directory `/home/samchou/buildroot/toolchain_build_nios2/uClibc/extra/config&#39;

make[1]: *** [extra/config/conf] Error 2

make[1]: Leaving directory `/home/samchou/buildroot/toolchain_build_nios2/uClibc&#39;

make: *** [/home/samchou/buildroot/toolchain_build_nios2/uClibc/.configured] Error 2

Jdhar,

Happy that you&#39;re back. It would be very helpful to test the drivers out with the new kernel. Try it if you have some spare time.

Those who want to write their own drivers should work on the new kernel. There are still a lot of codes to clean up. Those are problems in the Microtronix&#39;s port. I&#39;m trying to resolve them by cross-checking with other arch, eg sh/h8300/mips.

I use subversion too. It is very helpful, when I moved from 2.6.11 up, 2.6.12..., step-by-step. Those attached kernel patches were genereated with "svn diff".

I hope Altera can help to setup the svn/git for the tools/kernel, but putting them on to the upsteams is even better.

Hippo

Hey hippo, I&#39;m back (again)! Great thread you started. I have some little snippets of useful info that I would like to add regarding uClinux (common tasks), and I will start posting these on the forum soon. Also, if you need some help putting out these driver sets, I can test out builds for you since I have a whole army of dev boards available http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

I&#39;m not sure if this would be helpful or not (maybe I could get some feedback), but I use SVN for all my internal development. Since I&#39;m constantly rebuilding new toolchains, I could open up my SVN repository that basically combines all this information into one place so users don&#39;t have to keep repatching and checking for version nums etc..

J

UPDATE : merged to post#1

Here come the latest Linux kernel 2.6.15.3 on Nios2.

I did include most of the drivers in the mx1.4 release. But I did not build and test them, because I did not have any dev boards to test out. Only serial console is tested.

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

I don&#39;t understand how to update the kernel Makefile for modules install

--- Makefile    2006/01/26 06:13:18    1.1
+++ Makefile    2006/01/26 06:14:23
@@ -894,7 +894,7 @@
 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
 depmod_opts    :=
 else
-depmod_opts    := -b $(INSTALL_MOD_PATH)/lib/modules -r
+depmod_opts    := -b $(INSTALL_MOD_PATH) -r
 endif
 .PHONY: _modinst_post
 _modinst_post: _modinst_

[/b]

--- Quote End ---

That&#39;s a format of diff/patch command.

You can use editor, open Makefile, go to line 897,

it was,

depmod_opts := -b $(INSTALL_MOD_PATH)/lib/modules -r

change it to

depmod_opts := -b $(INSTALL_MOD_PATH) -r

Do you remember, we have several "patch" commands in the post?

A patch file is generated with the "diff" command. When we change some files, we can find the differences from what they were before we change. Send only the change to others, and he can update the files with "patch" command.

So if you save the "diff" to a file, Makefile.diff

you can update without using editor, with the command

cd ~/linux-2.6.x
patch -p0 <Makefile.diff

The parameter "-p0" mean cut zero dir level from file header, ie, the files in diff are in the same directory. Sometime, we use "-p1", we cut one level dir level from file header. eg, "linux-2.6.x/Makefile" with "-p1" will be the same as "Makefile" with "-p0" .

The current config for 2.6.15.1 has no module enabled. So you should skip this step.

And the vmlinux is ready for download and test.