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Re: [superh-gnu-discuss] problem with gcc-4.3.3 on sh2a target

  • To: Fabio Giovagnini <fabio.giovagnini@xxxxxxxxxxxxxxx>
  • Subject: Re: [superh-gnu-discuss] problem with gcc-4.3.3 on sh2a target
  • From: Andrew Stubbs <ams@xxxxxxxxxxxxxxxx>
  • Date: Mon, 22 Jun 2009 09:32:45 +0100
Hi Fabio,

On 20/06/09 12:11, Fabio Giovagnini wrote:
> Hi all,
> This is what I have discovered working around the gcc-4.3.3 form Code Surgery.
We're a little confused about which CodeSourcery toolchain you have. We have never released an sh-elf toolchain, and have never made an SH2A lite release. Did you build it yourself?
How does your compiler identify itself? Please run "sh-elf-gcc -v" and post the result. 


This is the linker path I'm using:
/usr/local/gcc-4.3-codesur/bin/sh-elf-ld -Map test-megameter.map
-Trom.sh2a.7286.ld -o
test-megameter.elf /home/fgiovagnini/acts/megameter3/test-megameter/.obj/crt0.o....
-L/usr/local/gcc-4.3-codesur/sh-elf/lib/m2a     ------------>                    m2a
-L/usr/local/gcc-4.3-codesur/lib/gcc/sh-elf/4.3.3/m2 -lgcc -lc---->      m2
/usr/local/gcc-4.3-codesur/bin/sh-elf-objcopy -I elf32-sh -O srec
--remove-section=.comment test-megameter.elf test-megameter.a37
I do not know what the specific problem is, in this case. However, it is always important that all modules in a link use the same calling conventions, so mixing multilibs is never a good idea.
For this reason it is always recommended that you link with gcc, and allow that to call ld with the proper -L options. 

You can pass your linker-specific parameters through gcc using -Wl.

E.g.:
	sh-elf-gcc -Wl,-Map,test-megameter.map ....
        ... -Wl,--remove-section=.comment ........

Hope that helps

Andrew
CodeSourcery