[U-Boot-Users] sandpoint8245 Build fails with optimization turned off

[U-Boot-Users] sandpoint8245 Build fails with optimization turned off

[Eric Olsen]

I was attempting to debug an issue so I wanted to turn off the 
optimization (change from -Os to -O0 in config.mk) so I can more easily 
step thru code in gdb.  When I do this for the sandpoint8245 target I 
get the following error.  I am using u-boot 1.1.4 pulled down yesterday 
and gcc 4.0.1 toolchain built by crosstool.


a - virtex2.o
a - xilinx.o
gmake[1]: Leaving directory 
`/home/eolsen/tree/u-boot-1.1.4/u-boot-1.1.4/common'
UNDEF_SYM=`powerpc-603e-linux-gnu-objdump -x lib_generic/libgeneric.a 
board/sandpoint/libsandpoint.a cpu/mpc824x/libmpc824x.a lib_ppc/libppc.a 
fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a 
fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a 
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a 
drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a 
post/cpu/libcpu.a common/libcommon.a |sed  -n -e 
's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
        powerpc-603e-linux-gnu-ld -Bstatic -T 
/home/eolsen/tree/u-boot-1.1.4/u-boot-1.1.4/board/sandpoint/u-boot.lds 
-Ttext 0xFFF00000  -n $UNDEF_SYM cpu/mpc824x/start.o \
                --start-group lib_generic/libgeneric.a 
board/sandpoint/libsandpoint.a cpu/mpc824x/libmpc824x.a lib_ppc/libppc.a 
fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a 
fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a 
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a 
drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a 
post/cpu/libcpu.a common/libcommon.a --end-group -L 
/usr/local/opt/crosstool/gcc-4.0.1-glibc-2.3.5/powerpc-603e-linux-gnu/bin/../lib/gcc/powerpc-603e-linux-gnu/4.0.1/nof 
-lgcc \
                -Map u-boot.map -o u-boot
/home/eolsen/tree/u-boot-1.1.4/u-boot-1.1.4/board/sandpoint/u-boot.lds:134 
cannot move location counter backwards (from fff04288 to fff04000)
gmake: *** [u-boot] Error 1

Has anyone else managed to fix this?

Thanks

Eric

[U-Boot-Users] sandpoint8245 Build fails with optimization turned off

[Wolfgang Denk]

In message <43C5A61B.8010603@google.com> you wrote:
> I was attempting to debug an issue so I wanted to turn off the 
> optimization (change from -Os to -O0 in config.mk) so I can more easily 
> step thru code in gdb.  When I do this for the sandpoint8245 target I 
> get the following error.  I am using u-boot 1.1.4 pulled down yesterday 
...
> cannot move location counter backwards (from fff04288 to fff04000)

That means that the code became larger because of missing optimization, and you either need to
adapt your linker script (u-boot.lds).

> Has anyone else managed to fix this?

Of course. Some boards even provide a debug  version  of  the  linker
script (u-boot.lds.debug).

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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