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Altera_Forum's avatar
Altera_Forum
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19 years ago

Why there is no response for my app on uclinux

I manage to make my code running on uclinux, but there is no response.

just as follow:

/>./test.bflt

/>

/>

why does this happen?

I build it on nios IDE for windows, and use

# nios2-linux-uclibc-elf2flt test -R test.o

to convert it to flat format. And got an error, reloc outside, then

# nios2-linux-uclibc-flthdr -r test.bflt

upload using ftp client in uclinux and run with no response?

Is there some suggestion?

thx

6 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    19 years ago

    I think if it did not run you would get an error stating that it was not an executable or something like that?

    What kind of output does it normally have?
  • Altera_Forum's avatar
    Altera_Forum
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    19 years ago

    --- Quote Start ---

    originally posted by hippo@Jul 26 2006, 10:19 PM

    see the wiki,

    http://nioswiki.jot.com/wikihome/operating...ms/compilehello (http://nioswiki.jot.com/wikihome/operatingsystems/compilehello)

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=17137)

    --- quote end ---

    --- Quote End ---

    I want to port a C++ program to uclinux. But I can&#39;t find a way to compile it using the toolchain under linux.

    Could you suggest a clue?
  • Altera_Forum's avatar
    Altera_Forum
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    19 years ago

    --- Quote Start ---

    originally posted by spaceli+jul 27 2006, 11:20 am--><div class='quotetop'>quote (spaceli @ jul 27 2006, 11:20 am)</div>

    --- quote start ---

    <!--quotebegin-hippo@Jul 26 2006, 10:19 PM

    see the wiki,

    http://nioswiki.jot.com/wikihome/operating...ms/compilehello (http://nioswiki.jot.com/wikihome/operatingsystems/compilehello)

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=17137)

    --- quote end ---

    --- Quote End ---

    I want to port a C++ program to uclinux. But I can&#39;t find a way to compile it using the toolchain under linux.

    Could you suggest a clue?

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=17162)</div>

    [/b]

    --- Quote End ---

    The libstdc++, which I built with buildroot, still has problem to run.

    Microtronix sell a linux toolchain with C++ support .
  • Altera_Forum's avatar
    Altera_Forum
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    19 years ago

    yeah, it seems NIOS2 IDE has stdlibc++, I compile it and use elf2flt to convert it to flat format. but it couldn&#39;t work. Sometimes it tell me reloc outside, sometimes no response. So I get confuse. Maybe CDK from Microtronix could help.

    thx for your clue.

    So there is no perfect way (of course for free-fee) to make a C++ toolchain,

    is it?

    By the way, does elf2flt -r means to run with out load?

    I&#39;m confuse about the parameters in elf2flt.

    And someone said elf2flt just strips the symbol and debug info from elf and make the header simple, is that right?
  • Altera_Forum's avatar
    Altera_Forum
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    19 years ago

    1. the libstdc++ in IDE is for newlib, it can not run in uClinux.

    2. the elf2flt needs several steps, and there are some variation between arch.

    for nios2, you should use -elf2flt flag for linkage.

    it is difficult to use elf2flt and flthdr alone.

    3. it is possible to work out c++ with buildroot. The c++ is compiled and linked, but crashed after c++ func calls. ( I am not a c++ user, I can&#39;t fix the problem. ) .

    the tools from Microtronix costs $900, but I think it should be based on buildroot and should be GPL?