building a cross-native for arm

[Mauro Condarelli]

I'm answering to myself to add a few comments.

0) cross-compiler seems to work ok (arm-mcon-linux-gnueabi) I am 
"deploying" it merely doing a:
   ( cd /usr/local/bin ; ln -s 
$HOME/x-tools/arm-mcon-linux-gnueabi/bin/* . )
   on my build machine.

1) I got to the end of cross-native toolchain compilation (disabling 
GDB), but I'm unable to make it run on target board because of many 
missing libs.

2) I tried using the "staging", but that doesn't fit well (IF I used it 
correctly!) because many libs are pushed in the standard /lib & 
/usr/lib, while I would like to have some sort of self-contained package 
(probably to deploy it in /usr/local/arm-mcon-linux-gnueabi/... or 
something similar).

What am I doing wrong?

TiA
Mauro

On 10/12/2014 01:09 PM, Mauro Condarelli wrote:
> Hi,
> first of all many thanks for the effort and time spent on crossgcc-NG.
> This is my first attempt at using it, so I might be very mistaken 
> everywhere.
>
> I need a native compiler (and related stuff, including make and other 
> installation tools) running on a small ARM board (I wouldn't want to 
> cross-compile for it).
>
> I built the cross compiler (arm-mconc-linux-gnueabi) with almost no 
> problem, in spite of the very terse documentation I found.
> Only stumbling was because I didn't have libncurses-dev installed on 
> my build system.
> Now I have a nice $HOME/x-tools/arm-mconc-linux-gnueabi subdir.
>
> If I understand it correctly I now need to use this cross-gcc to build 
> the native.
> I changed Tuple's vendor string to "mconn".
> I activated the "canadian" type and selected "arm-conc-linux-gnueabi" 
> as Host system Tuple.
>
> First problem was ct-ng wouldn't find the cross-toolchain, so I 
> resorted to:
>   $ PATH=$HOME/x-tools/arm-mconc-linux-gnueabi/bin:$PATH ct-ng build
>
> This seems to work, but, building gdb, I get again the error about 
> "missing termcap library".
> I presently disabled GDB to finish the build and test results, but 
> that's not a real solution, obviously.
>
> Is there some "tutorial" documentation available somewhere? I didn't 
> find any and, as said docs coming with crossgcc-NG seem a bit too terse.
>
> Other question: it seems the option about "Companion tools" seems to 
> apply to upgrade old tools running on build machine; is there a way to 
> build the same tools for the host (==target, in my case)? That would 
> be very useful.
>
> Last, but not least, I am a bit confused about what, exactly, I should 
> copy on the target machine and where, to use the generated native 
> toolchain.
> Now cross-compilation of native has finished without errors and I have 
> a confusing PATH=$HOME/x-tools/arm-mconn-linux-gnueabi directory 
> ("..." stand for this directory):
> 1) executable are in .../bin
> 2) but .../include is empty and .../lib          contains only the 
> gcc-specific stuff
> 3) .../arm-mconn-linux-gnueabi/bin           contains only binutils 
> (without prefix)
> 4) .../arm-mconn-linux-gnueabi/include    contains only "c++" subdir
> 5) .../arm-mconn-linux-gnueabi/sysroot    seems to have correct libs 
> and include, but has neither           compiler nor binutils
> What is the "approved" way to deploy all this stuff to target?
> Sorry if these are very naive questions, I searched, but I couldn't 
> find an answer to them (shame on me).
>
> Thanks again and Regards
> Mauro Condarelli
>
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