Re: Libtool does not generate shared libraries when cross compiling x86/64 -> sparc64 using fujitsu compiler

[Mike Frysinger]

On 03 Feb 2016 14:30, Harald Servat wrote:
>    we have found that
> 
>   ./configure --prefix=/tmp/test CC=fccpx --build=x86_64-linux-gnu 
> --host=sparc64-linux-gnu
> 
>    did not work. See:
> 
> ...
> checking whether the fccpx linker (/usr/bin/ld -m elf64_sparc) supports 
> shared libraries... no
> checking dynamic linker characteristics... GNU/Linux ld.so
> checking how to hardcode library paths into programs... unsupported
> checking for shl_load... no
> checking for shl_load in -ldld... no
> checking for dlopen... yes
> checking whether a program can dlopen itself... cross
> checking whether stripping libraries is possible... yes
> checking if libtool supports shared libraries... no
> 
>    However, the system support suggested to add the flag -Xg into the 
> Fujitsu compiler and we found that the following configure did work.
> 
> ./configure --prefix=/tmp/test CC=fccpx --host=x86-linux CFLAGS="-Xg"
> 
> checking whether the fccpx linker (/usr/bin/ld) supports shared 
> libraries... yes
> checking whether -lc should be explicitly linked in... no
> checking dynamic linker characteristics... fccpx: warning: 
> -print-search-dirs is unrecognized option. This option is passed to the 
> linker.
> usage: fccpx [options] files.
> GNU/Linux ld.so
> checking how to hardcode library paths into programs... immediate
> checking for shl_load... no
> checking for shl_load in -ldld... no
> checking for dlopen... yes
> checking whether a program can dlopen itself... cross
> checking whether stripping libraries is possible... yes
> checking if libtool supports shared libraries... yes
> 
>    So that works for the small test example I generated. However, when 
> passing the same flags to the application we want to build, then the 
> libtool still claims it does not support shared libraries. So there are 
> couple of questions then: any idea on why this larger case the addition 
> of CFLAGS and --host does allow libtool to generate shared libraries? 
> And, I don't have direct access to the system, but can I do something to 
> improve the support on this system?

i don't know what "fccpx" is, but i'd guess that libtool just doesn't
understand how it works.  please attach the config.log file from that
run.
-mike

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