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v850 ld error

Joel Sherrill joel.sherrill@oarcorp.com
Thu Jan 10 00:45:00 GMT 2013 
On 01/09/2013 04:45 PM, Igor Pashev wrote:
> 09.01.2013 22:33, Joel Sherrill пишет:
>> Hi
>>
>> Testing binutils and gcc heads, I am getting this error when
>> linking the autoconf probe for RTEMS when the CPU CFLAG
>> -mgcc-abi is used:
>>
>> $ cat m.c
>> main()
>> {
>> }
>> [joel@rtbf64a test-gcc]$ v850-rtems4.11-gcc -mgcc-abi m.c
>>
>>
>>   /users/joel/test-gcc/install-svn/libexec/gcc/v850-rtems4.11/4.8.0/collect2
>> -m v850
>> /users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/../../../../v850-rtems4.11/lib/gcc-abi/crt0.o
>> -L/users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/gcc-abi
>> -L/users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/../../../../v850-rtems4.11/lib/gcc-abi
>> -L/users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0
>> -L/users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/../../../../v850-rtems4.11/lib
>> /tmp/ccuPHsB7.o -lgcc -lc -lgcc
>> /users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/../../../../v850-rtems4.11/bin/ld:
>> skipping incompatible
>> /users/joel/test-gcc/install-svn/lib/gcc/v850-rtems4.11/4.8.0/gcc-abi/libgcc.a
>> when searching for -lgcc
>>
>> I don't have any patches to gcc or binutils.
>>
>> Any suggestions on what to look for?
>>
> Well, libgcc_s is not of that arch which ld expects.
Well Doh!

The gcc-abi and 8byte multilib variants appeared to have
been added around 2012-11-20 by Nick Clifton. I think he
missed changing the ASM_SPEC in gcc/config/v850/rtems.h
when he added it. v850-rtems-gcc wasn't passing in the expected
cpu specification flags.

Nick.. how does this patch to gcc/config/v850/rtems.h look?

Index: rtems.h
===================================================================
--- rtems.h    (revision 195054)
+++ rtems.h    (working copy)
@@ -26,4 +26,8 @@

  /* Map mv850e1 and mv850es to mv850e to match MULTILIB_MATCHES */
  #undef ASM_SPEC
-#define ASM_SPEC "%{mv850es:-mv850e} %{mv850e1:-mv850e} 
%{!mv850es:%{!mv850e1:%{mv*:-mv%*}}}"
+#define ASM_SPEC "%{mv850es:-mv850e} \
+%{mv850e1:-mv850e} \
+%{!mv850es:%{!mv850e1:%{mv*:-mv%*}} \
+%{m8byte-align:-m8byte-align} \
+%{mgcc-abi:-mgcc-abi}}"


-- 
Joel Sherrill, Ph.D.             Director of Research&  Development
joel.sherrill@OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35806
Support Available               (256) 722-9985
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