Re: v850 ld error

[Joel Sherrill <joel dot sherrill at oarcorp dot com>]

On 01/09/2013 04:45 PM, Igor Pashev wrote:
> 09.01.2013 22:33, Joel Sherrill ÐÐÑÐÑ:
> > 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
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