Re: [Gems-users] using non native compiler for simics/gems

[Shantanu Gupta <shangupt@xxxxxxxxx>]

On Wed, 11 Jul 2007, Dan Gibson wrote:

> What happens when you try >load-module ruby at the Simics console?
Thanks for your reply Dan. I get the following error:

Error loading module 'ruby': Failed to load module 'ruby' 
('/x/shangupt/gems/simics_3_workspace/x86-linux/lib/ruby.so'): "undefined 
symbol: ruby_session_set"
I also ran 'nm' and 'objdump' to verify that ruby.so does NOT have 
ruby_session_set variable defined.
> Have you copied the libgcc and libstc into the Simics library tree? I'm not
> sure that trick works with Simics 3.x, but its worth a try... the details
> are listed in the GEMS Wiki, under the 2.2.x setup if I remember correctly.
Yes, I have tried that approach. I copied the replacement files from my 
gcc-3.4.1 installation to the simics library tree. It gives the exact same 
problem. It seems that working with 2.2.x is much more transparent.
Currently I am giving a shot to gcc-3.2.2, just for kicks. I am not very 
hopeful. I am afraid that I might not be tackling with the real root of 
this problem.
Shantanu

> Shantanu Gupta wrote:
>
>  I did some more runs with different machines/compiler set-up, but with no 
> luck. I have tried GCC 4.0.3 and 3.4.1 as non native compilers, and I read 
> that both have worked with Gems in the past.
> I am using Gems 1.4 with Simics 3.0.28 on a P4 machine. I do not get any 
> problems with the compilation. But, when I try loading the ruby module, I 
> get the undefined symbol error. An updated dump of ldd on ruby.so:
> $ lib > ldd ruby.so
>          linux-gate.so.1 =>  (0x00499000)
>          libz.so.1 => /usr/lib/libz.so.1 (0x003f2000)
>          libstdc++.so.6 => /opt/gcc-3.4.1/lib/libstdc++.so.6 (0x00ae3000)
>          libsimics-common.so => not found
>          libm.so.6 => /lib/libm.so.6 (0x00405000)
>          libgcc_s.so.1 => /opt/gcc-3.4.1/lib/libgcc_s.so.1 (0x00ec0000)
>          libc.so.6 => /lib/libc.so.6 (0x004b6000)
>          /lib/ld-linux.so.2 (0x0049a000)
>
>
> On Tue, 10 Jul 2007, shangupt@xxxxxxxxx wrote:
>
>
>
>  For cases when the native compiler is not used for GEMS (as discussed
> heavily in thread -
> https://lists.cs.wisc.edu/archive/gems-users/2006-October/msg00168.shtml). How
> can I make the compiler for Simics consistent with that used by Gems ?
>
> I understand that I have to modify the LDFLAGS and MODULE_LDFLAGS in
> all the makefiles withing Gems. But in addition to that, do I have to
> change something for Simics installation in order for it to use the non
> native compiler ?
>
> Currently I have tried GCC 4.1.1 (as native) and 3.3.6 (as non-native)
> and with both I get the error of following sort:
>
> Error loading module 'ruby': Failed to load module 'ruby'
> ('/packages/GEMS/simics-3-workspace/x86-linux/lib/ruby.so'): "undefined
> symbol: ruby_session_set"
>
> I am not sure if I have done the integration of non-native compiler
> correctly. My ruby.so file gives following with ldd (when using GCC
> 3.3.6 non native)
>
> $> ldd ruby.so
>
> ./ruby.so: /opt/gcc-3.3.6/lib/libgcc_s.so.1: version `GCC_4.2.0' not
> found (required by /usr/lib/libstdc++.so.6)
>        linux-gate.so.1 =>  (0x0060f000)
>        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00bbf000)
>        libz.so.1 => /usr/lib/libz.so.1 (0x00e58000)
>        libsimics-common.so => not found
>        libm.so.6 => /lib/libm.so.6 (0x00773000)
>        libgcc_s.so.1 => /opt/gcc-3.3.6/lib/libgcc_s.so.1 (0x0052f000)
>        libc.so.6 => /lib/libc.so.6 (0x00cca000)
>        /lib/ld-linux.so.2 (0x80000000)
>
> Any suggestions are welcome. Thanks,
>
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