Hi everyone. I recentlly succeded to compile the kernel version 2.6 for a soft-core embedded CPU (MicroBlaze) in a development board designed by Xilinx (SP605). However, after reinstalling my OS and doing some other things I can no longer compile using the same procedure. ( I am using ubuntu 10.04 now)


Next I describe the steps that i have followed, some of them are pretty specific to my platform but don't worry if you don't totally understand them as I suspect that my problem is a more general and has to do with ubuntu itself.
I have uncompressed the initramfs.cpio file into a directory and pointed the CONFIG_INITRAMFS_SOURCE parameter in the .config file to it. I have applied the commands (both using sudo and without it) "sudo make ARCH=microblaze mmu_defconfig", "sudo make ARCH=microblaze menuconfig" (configured the platform). I have also generated the Device Tree Source file and placed it in "../ARCH/microblaze/boot/dts". I also set the environment variable PATH with " export PATH="/home/arquerc/mb-gnu-tools/microblaze-unknown-linux-gnu/bin":$PATH; " which is where I have the microblaze tools placed (the mb-linux-gcc executable is there).



If I am not forgetting anything I went ahead and ran "sudo make ARCH=microblaze CROSS_COMPILE=mb-linux- simpleImage.xilinx" and I got the following output:


arquerc@arquerc-UBUNTU:~/linux-2.6-xlnx$ sudo make ARCH=microblaze CROSS_COMPILE=mb-linux- simpleImage.system
make: mb-linux-gcc: Command not found
make: mb-linux-gcc: Command not found
CHK include/linux/version.h
CHK include/generated/utsrelease.h
CC kernel/bounds.s
/bin/sh: mb-linux-gcc: command not found
make[1]: *** [kernel/bounds.s] Error 127
make: *** [prepare0] Error 2



If I am correct this means that the command mb-linux-gcc can not be found and that would mean that i have incorrectlly set the PATH variable . However if I type "echo $PATH" the value of the variable is correct.... I set the PATH variable by adding the following line to /home/arquerc/.bashrc : export PATH="/home/arquerc/mb-gnu-tools/microblaze-unknown-linux-gnu/bin":$PATH;

arquerc@arquerc-UBUNTU:~$ echo $PATH
/home/arquerc/mb-gnu-tools/microblaze-unknown-linux-gnu/bin:/opt/Xilinx/12.2/ISE_DS/ISE/bin/lin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

The most alarming thing is that if i write "mb-linux-gcc" into the shell I don't get the "command not found" message... meaning that the file can actually be located....

arquerc@arquerc-UBUNTU:~$ mb-linux-gcc
mb-linux-gcc: no input files


I really don't know what to do... I was able to compile using this same procedure without any problems just like a week ago.

Do you need to sudo for make? I think sudo might be resetting the environment variables for security purposes. This is probably configurable in /etc/sudoers

How about adding the full filespec prefix to your CROSS_COMPILE parameter?
You should not need root privileges to do any of these things.

--- rod.

Thanks people it was the sudo thing! I was only using sudo because "make ARCH=microblaze mrproper" had given me error without it. I did it without sudo and it compiled OK!!!

Thanks again!