Re: generic eabi arm embedded build uclibc failure

Hi James,

On Thursday 05 July 2007 15:00:42 James Newell wrote:
> Thank You.  
> 
> I did an svn update, and that got me to building the stage 1 linux26 kernel 
> which fails building several modules using old style udelay calls which have 
> not been fixed by the upstream  maintainers for some time now.  I created a 
> target/embedded/kernel.conf file attached that disables building those 
> modules.

Thanks for your efford. However, this .config only applies to ARM (and maybe
MIPS or so) builds and the fixed config probable is not what T2 would auto-
generate for all the other architectures.

The per architecture disabling of kernel modules goes into the files in
architecture/$arch/kernel$kernelver-disable.lst

such as:
architecture/arm/kernel26-disable.lst

With one CONFIG_* symbol per line while the date and first occurance are
just informational.

> My next encounter is 1st stage binutils error:
> arm-t2-linux-gnueabi-gcc -W -Wall -Wstrict-prototypes -Wmissing-prototypes 
> -Werror -g -O2 -o .libs/as-new 
> app.o as.o atof-generic.o cond.o depend.o dwarf2dbg.o dw2gencfi.o ecoff.o 
> ehopt.o expr.o flonum-copy.o flonum-konst.o flonum-mult.o frags.o hash.o 
> input-file.o input-scrub.o listing.o literal.o macro.o messages.o 
> output-file.o read.o sb.o stabs.o subsegs.o symbols.o write.o tc-arm.o 
> obj-elf.o 
> atof-ieee.o  ../opcodes/.libs/libopcodes.so ../bfd/.libs/libbfd.so 
> -L/home/jnewell/work/t2-trunk/src.binutils.default.20070703.145344.14953.orion.eng.wgate.com/binutils-2.17.50.0.15/objdir/libiberty/pic
>  -liberty ../libiberty/libiberty.a
> /home/jnewell/work/t2-trunk/src.binutils.default.20070703.145344.14953.orion.eng.wgate.com/binutils-2.17.50.0.15/objdir/libiberty/pic/libiberty.a(floatformat.o):
>  
> In function `floatformat_from_double':
> floatformat.c:(.text+0x2d8): undefined reference to `frexp'
> floatformat.c:(.text+0x350): undefined reference to `ldexp'
> /home/jnewell/work/t2-trunk/src.binutils.default.20070703.145344.14953.orion.eng.wgate.com/binutils-2.17.50.0.15/objdir/libiberty/pic/libiberty.a(floatformat.o):
>  
> In function `floatformat_to_double':
> floatformat.c:(.text+0x530): undefined reference to `ldexp'
> floatformat.c:(.text+0x5b8): undefined reference to `ldexp'
> collect2: ld returned 1 exit status
> make[4]: *** [as-new] Error 1
> make[4]: Leaving directory 
> `/home/jnewell/work/t2-trunk/src.binutils.default.20070703.145344.14953.orion.eng.wgate.com/binutils-2.17.50.0.15/objdir/gas'
> 
> I believe the binutils/gas requires libm.  I used the ./debug.sh t2 feature 
> to 
> modify the binutils/gas/configure file to add need_libm=yes with fixfile and 
> fixfilediff > ../package/diffname, but the new patch doesn't seem to be 
> permanent when I rerun the ./script/Build-Target command again.  Any hints on 
> this would be great.  

Where exactly did you add this need_libm? Normally patching configure should
have effect. Maybe the following helps, you can either prefil the config.cache
if this configure part is associated with some config.cache value like:

hook_add preconf 5 "echo 'ac_cv_whatever=yes' >> ./config.cache"

in the packages's .conf

Or just use the T2 compiler wraper to inject "-lm":

var_append CC_WRAPPER_APPEND ' ' '-lm'

I hope this helps - yours,

-- 
  René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
  http://exactcode.de | http://t2-project.org | http://rene.rebe.name

----------------------------------------------------------- 
If you wish to unsubscribe from this mailing, send mail to
lists@xxxxxxxxxxxxxx with a subject of: unsubscribe t2