Upgrading mtd-utils in uClinux.

Upgrading mtd-utils in uClinux.

[Glen Johnson]

Linux-mtd,
I am attempting to compile the latest mtd-utils into uClinux's distribution dated 2006-08-03.  After some unsuccessful attempts I found the new mtd-utils needed an updated zlib.  I successfully upgraded to zlib version 1.2.3 inside uClinux-dist/lib/zlib.  I now have that compiling and still am not getting anywhere with compiling the mtd-utils.  
I dropped the latest mtd-utils code into the directory uClinux-dist/user/mtd-utils.  I have observed the Makefiles between the new updated mtd-utils and the old uClinux-dist/user/mtd-utils/Makefile are VERY different.  I tried to use the old Makefile as a template to build the new code and it still is not compiling.
What is the correct method of upgrading mtd-utils?  It shouldn't be as difficult to upgrade some code in user space as I am making it.  I feel like I must be going about this the wrong way.  Are there any pointers, tips, or recommendations to get me going in the right direction?

Thanks,
Glen Johnson

Re: Upgrading mtd-utils in uClinux.

[Ricard Wanderlof]

On Tue, 28 Nov 2006, Glen Johnson wrote:

> I am attempting to compile the latest mtd-utils into uClinux's 
> distribution dated 2006-08-03.  After some unsuccessful attempts I found 
> the new mtd-utils needed an updated zlib.  I successfully upgraded to 
> zlib version 1.2.3 inside uClinux-dist/lib/zlib.  I now have that 
> compiling and still am not getting anywhere with compiling the 
> mtd-utils. I dropped the latest mtd-utils code into the directory 
> uClinux-dist/user/mtd-utils.  I have observed the Makefiles between the 
> new updated mtd-utils and the old uClinux-dist/user/mtd-utils/Makefile 
> are VERY different.  I tried to use the old Makefile as a template to 
> build the new code and it still is not compiling. What is the correct 
> method of upgrading mtd-utils?  It shouldn't be as difficult to upgrade 
> some code in user space as I am making it.  I feel like I must be going 
> about this the wrong way.  Are there any pointers, tips, or 
> recommendations to get me going in the right direction?

Unless someone here has had this specific problem, some form of output 
from the compilation indicating what is going wrong would be helpful.

/Ricard
--
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30

Re: Upgrading mtd-utils in uClinux.

[Glen Johnson]

Ricard Wanderlof wrote:
> Unless someone here has had this specific problem, some form of output
> from the compilation indicating what is going wrong would be helpful.
>
>   
Yes, of course.  I have a couple more direct question. First, I found
the mtd-utils code is not properly using zlib. 

m68k-elf-gcc -Wl,--fatal-warnings -Wl,-elf2flt -Wl,-move-rodata
-msep-data -o mkfs.jffs2 crc32.o compr_rtime.o mkfs.jffs2.o compr_zlib.o
compr.o -L/home/glen/src/c/linux/uClinux-dist-20060803/lib/zlib
warning: .rodata section contains relocations
mkfs.jffs2.elf2flt: In function `jffs2_zlib_decompress':
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:118:
undefined reference to `inflateInit_'
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:127:
undefined reference to `inflate'
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:132:
undefined reference to `inflateEnd'
mkfs.jffs2.elf2flt: In function `jffs2_zlib_compress':
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:73:
undefined reference to `deflateInit_'
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:80:
undefined reference to `deflate'
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:87:
undefined reference to `deflateEnd'
/home/glen/src/c/linux/uClinux-dist-20060803/user/mtd-utils/compr_zlib.c:98:
undefined reference to `deflateEnd'
collect2: ld returned 1 exit status
make[3]: *** [mkfs.jffs2] Error 1

The warning: .rodata section contains relocations is printed and it
appears all other attempts to use libz.a are dropped.  I Googled this
warning and there were a couple of places where it mentioned
configure.in.  Is this the real problem?  If so how can it be fixed, not
familiar with autoconf)?

Secondly, once I get the code to compile it appears I still need to add
a section to the Makefile to install the files into the romfs image. 
Can I just pull this out of the old mtd-utils/Makefile or what? 
Suggestion's/recommendations?
Thanks,
Glen Johnson

Re: Upgrading mtd-utils in uClinux.

[David Woodhouse]

On Thu, 2006-11-30 at 07:58 -0500, Glen Johnson wrote:
> Ricard Wanderlof wrote:
> > Unless someone here has had this specific problem, some form of output
> > from the compilation indicating what is going wrong would be helpful.
> >
> >   
> Yes, of course.  I have a couple more direct question. First, I found
> the mtd-utils code is not properly using zlib. 
> 
> m68k-elf-gcc -Wl,--fatal-warnings -Wl,-elf2flt -Wl,-move-rodata
> -msep-data -o mkfs.jffs2 crc32.o compr_rtime.o mkfs.jffs2.o compr_zlib.o
> compr.o -L/home/glen/src/c/linux/uClinux-dist-20060803/lib/zlib

No '-lz' on this command line -- you're not actually asking it to link
against zlib. Thus is doesn't find any of zlib's symbols.

> warning: .rodata section contains relocations

I've no idea what this is about. Perhaps the function pointers in the
jffs2_zlib_comp compressor structure?

mkfs.jffs2 builds fine for me for FR-V uClinux, although that's
ELF-FDPIC not flat. Are the relocations in .rodata actually a problem?
Doesn't m68k have ELF-FDPIC yet?

> Secondly, once I get the code to compile it appears I still need to add
> a section to the Makefile to install the files into the romfs image. 
> Can I just pull this out of the old mtd-utils/Makefile or what? 
> Suggestion's/recommendations?

Something wrong with 'make DESTDIR=/foo install' ?

--  
dwmw2

Re: Upgrading mtd-utils in uClinux.

[Glen Johnson]

David Woodhouse wrote:
> On Thu, 2006-11-30 at 07:58 -0500, Glen Johnson wrote:
>  
>
> mkfs.jffs2 builds fine for me for FR-V uClinux, although that's
> ELF-FDPIC not flat. Are the relocations in .rodata actually a problem?
>  
Yes, it appears to.  When I try to execute mkfs.jffs2 on the host
system I get the following error.
BINFMT_FLAT: reloc outside program 0x54e20000 (0 - 0xf57f4/0x11ec0),
killing mkfs.jffs2!
SIGSEGV


> Doesn't m68k have ELF-FDPIC yet?
>  
I have the uClinux distribution dated 2006-08-03.  I did a grep -r
ELF-FDPID ./ and found it mentioned in the code for the Fujitsu FRV
processor and nothing else.  Someone told me he thought it did.  But I
do not see it in the code.  The compiler does appear to have elf
support according to this line in the output of make, ARCH=m68knommu
CROSS_COMPILE=m68k-elf- this however is Not ELF-FDPIC.
Is there a better way to tell if m68knommu supports ELF-FDPIC?