Messages in this thread | | | Date | Mon, 24 Aug 1998 01:31:05 +0200 | From | Kenneth Johansson <> | Subject | Re: #define __linux__ |
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Geert Uytterhoeven wrote:
> > Anyway if I change the spec file and some minor things in the kernel source it at > > least compiles and builds a vmlinux object. Its probably a few weeks before I can > > say if it really works. Have to write some boot code first. > > Last time I used my PPC cross compiler on the Pentium, I didn't have to add > anything special. The compiler is called ppc-linux-elf-gcc and works without > twiddling with any config files. Just don't forget to add `ARCH=ppc' to all > your make commands, e.g. > > make ARCH=ppc zImage > > What kernel version were you trying to compile? For Linux/PPC, the tree at > vger.rutgers.edu is your friend. >
I use the vger verison. Is there any easy way to spot the difference apart from doing a diff and trying to figure it out ? I compile for CONFIG_MBX and I had to change one line in ppc/setup.c, Inside an ifdef config_mbx is a declaration of an extern thats not extern anymore. shell script offset an size is not working with a cross compiling environment.The included mbx_defconfig hasCONFIG_VGA_CONSOLE=y. That can't be right. And the last stage of zImage creation breaks.
this is how it looks when it breaks. I don't now were to start looking for this error.
----------------------------------------
make[1]: Entering directory `/home/ken/src/vger/linux/arch/ppc/coffboot' powerpc-eabi-objcopy -S -O binary /home/ken/src/vger/linux/vmlinux vmlinux gzip -vf9 vmlinux vmlinux: 58.3% -- replaced with vmlinux.gz make[1]: Leaving directory `/home/ken/src/vger/linux/arch/ppc/coffboot' make[1]: Entering directory `/home/ken/src/vger/linux/arch/ppc/boot' ppc-linux-elf-ld -T ../vmlinux.lds -Ttext 0x00100000 -o zvmlinux.tmp head.o misc.o ../coffboot/zlib.o mbxtty.o ppc-linux-elf-objcopy -O elf32-powerpc -R .comment --add-section=image=../coffboot/vmlinux.gz \ zvmlinux.tmp zvmlinux ppc-linux-elf-gcc -D__KERNEL__ -I/home/ken/src/vger/linux/include -O2 -DSTDC_HEADERS -fno-builtin -I/home/ken/src/vger/linux/include -DCONFIG_MBX -DINITRD_OFFSET=0 -DINITRD_SIZE=0 \ -DZIMAGE_OFFSET=`sh offset zvmlinux image` \ -DZIMAGE_SIZE=`sh size zvmlinux image` -DKERNELBASE= \ -c -o misc.o misc.c ppc-linux-elf-ld -T ../vmlinux.lds -Ttext 0x00100000 -o zvmlinux.tmp head.o misc.o ../coffboot/zlib.o mbxtty.o ppc-linux-elf-objcopy -O elf32-powerpc -R .comment --add-section=image=../coffboot/vmlinux.gz \ zvmlinux.tmp zvmlinux rm zvmlinux.tmp ppc-linux-elf-gcc -D__KERNEL__ -I/home/ken/src/vger/linux/include -O2 -DSTDC_HEADERS -fno-builtin -I/home/ken/src/vger/linux/include -DCONFIG_MBX mkprep.c -o mkprep /usr/local/ppc-linux-elf/bin/ld: warning: cannot find entry symbol _start; defaulting to 01800074 /tmp/ccQSMG5s.o: In function `main': /tmp/ccQSMG5s.o(.text+0x72): undefined reference to `stderr' /tmp/ccQSMG5s.o(.text+0x76): undefined reference to `stderr' /tmp/ccQSMG5s.o(.text+0x88): undefined reference to `fprintf' /tmp/ccQSMG5s.o(.text+0x94): undefined reference to `exit' /tmp/ccQSMG5s.o(.text+0xa8): undefined reference to `strcmp' /tmp/ccQSMG5s.o(.text+0xd0): undefined reference to `strcmp' /tmp/ccQSMG5s.o(.text+0xf8): undefined reference to `strcmp' ... more of the same -------------------------------
I hope Iam not supposed to link to a c library. Whats the deal with making all boot images when one is needed. I don't really need this I guess as long as the vmlinuz image is OK. I have to write my own bootstrap anyway its just easier to copy from already working stuff.
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