[Buildroot] C++ cross compiler

[Buildroot] C++ cross compiler

[nina.holly at aerende.com]

Hi,
    Is it possible to generate a C++ (g++) cross compiler
for ARM usng buildroot?  I have been able to generate
a GCC cross compiler for ARM using buildroot.

Thanks for any pointers.

Nina

[Buildroot] C++ cross compiler

[Philippe Ney]

> Hi,
>     Is it possible to generate a C++ (g++) cross compiler
> for ARM usng buildroot?  I have been able to generate
> a GCC cross compiler for ARM using buildroot.
> 
> Thanks for any pointers.

Sure.

$ make menuconfig

And check the right box.

Philippe

[Buildroot] C++ cross compiler

[nina.holly at aerende.com]

Hi Philippe,
    Could you tell me how you were able to
create a c++ cross compiler for ARM?   I.E.
can you tell me which boxes you checked?

    The following is what I did which doesn't
seem to work.

In make menuconfig in the "toolchain" menu I checked

[*] Build/install c++ compiler and libstdc++

and it ended up setting in .config :

BR2_INSTALL_LIBSTDCPP=y

but did not set:

BR2_PACKAGE_LIBCGICC or
BR2_PACKAGE_QTE

After running make, arm-linux-g++ does not show up in the
bin directory specified in the "Build options" menu section
for "Toolchain and header file location".

1. Is there another make menuconfig option that needs to
   be set to build a C++ cross compiler?

2. When I googled "buildroot c++ cross compiler" other people
   were not able to create a c++ cross compiler w/buildroot and
   I didn't see a clear resolution from the responses.

Thanks again for any pointers.

Nina

>> Hi,
>>     Is it possible to generate a C++ (g++) cross compiler
>> for ARM usng buildroot?  I have been able to generate
>> a GCC cross compiler for ARM using buildroot.
>>
>> Thanks for any pointers.
>
> Sure.
>
> $ make menuconfig
>
> And check the right box.
>
> Philippe
> _______________________________________________
> buildroot mailing list
> buildroot at uclibc.org
> http://busybox.net/mailman/listinfo/buildroot
>

[Buildroot] C++ cross compiler

[Philippe Ney]

> Hi Philippe,
>     Could you tell me how you were able to
> create a c++ cross compiler for ARM?   I.E.
> can you tell me which boxes you checked?
> 
>     The following is what I did which doesn't
> seem to work.
> 
> In make menuconfig in the "toolchain" menu I checked
> 
> [*] Build/install c++ compiler and libstdc++

OK

> and it ended up setting in .config :
> 
> BR2_INSTALL_LIBSTDCPP=y

OK

> but did not set:
> 
> BR2_PACKAGE_LIBCGICC or
> BR2_PACKAGE_QTE

That's packages. Nothing to do with the compiler

> After running make, arm-linux-g++ does not show up in the
> bin directory specified in the "Build options" menu section
> for "Toolchain and header file location".
> 
> 1. Is there another make menuconfig option that needs to
>    be set to build a C++ cross compiler?
> 
> 2. When I googled "buildroot c++ cross compiler" other people
>    were not able to create a c++ cross compiler w/buildroot and
>    I didn't see a clear resolution from the responses.

You ought to have something like :

buildroot/build_arm_nofpu/staging_dir/bin/arm-linux-uclibc-g++

(gcc-4.0.3 / binutils-2.17 / uClibc-0.9.28)

If the c++ support is not generated in your compiler, maybe you have to
check in the corresponding .mk file if the right parameters are used.


Philippe

[Buildroot] C++ cross compiler

[MikeW]

 <nina.holly@...> writes:

> 
> Hi,
>     Is it possible to generate a C++ (g++) cross compiler
> for ARM usng buildroot?  I have been able to generate
> a GCC cross compiler for ARM using buildroot.
> 
> Thanks for any pointers.
> 
> Nina
> 
This is in make menuconfig: Toolchain options: Build/install
c++ compiler and libstdc++

Also, if you get the problem raised here:
http://bugs.uclibc.org/view.php?id=904

applying the patch in the first Note solves the problem.
http://gcc.gnu.org/bugzilla/attachment.cgi?id=6132

Method: save the text of the patch from the link, as something like
libstdc++-3.4.0-uclibc.patch and then copy the file to toolchain/gcc/<version>/

You will need to repatch & rebuild the toolchain ... make dirclean first.

Regards,
MikeW

[Buildroot] C++ cross compiler

[nina.holly at aerende.com]

Hi Mike,
   The build completes without an error, just no
arm-linux-g++ compiler gets built.  So I'm not sure
if the patch would fix the problem.

Nina


>  <nina.holly@...> writes:
>
>>
>> Hi,
>>     Is it possible to generate a C++ (g++) cross compiler
>> for ARM usng buildroot?  I have been able to generate
>> a GCC cross compiler for ARM using buildroot.
>>
>> Thanks for any pointers.
>>
>> Nina
>>
> This is in make menuconfig: Toolchain options: Build/install
> c++ compiler and libstdc++
>
> Also, if you get the problem raised here:
> http://bugs.uclibc.org/view.php?id=904
>
> applying the patch in the first Note solves the problem.
> http://gcc.gnu.org/bugzilla/attachment.cgi?id=6132
>
> Method: save the text of the patch from the link, as something like
> libstdc++-3.4.0-uclibc.patch and then copy the file to
> toolchain/gcc/<version>/
>
> You will need to repatch & rebuild the toolchain ... make dirclean first.
>
> Regards,
> MikeW
>
>
>
>
>
> _______________________________________________
> buildroot mailing list
> buildroot at uclibc.org
> http://busybox.net/mailman/listinfo/buildroot
>

[Buildroot] C++ cross compiler

[MikeW]

 <nina.holly@...> writes:

> 
> Hi Mike,
>    The build completes without an error, just no
> arm-linux-g++ compiler gets built.  So I'm not sure
> if the patch would fix the problem.
> 
> Nina
>
Must be something more fundamental wrong - you'll have to try (e.g.)
capturing the build output and then checking through it with an editor
to try to find why it skips c++/g++ creation.

Had a problem with libstdc++ which I fixed as described.

I have had success using buildroot-20061031, with
binutils-2-16.91.0.7 and gcc-3.4.3

I also moved the download directory away from the default, so that
I could do dirclean without losing all the tar.gz files.

MikeW

[Buildroot] C++ cross compiler

[Bernhard Fischer]

On Wed, Nov 15, 2006 at 03:50:52PM +0000, MikeW wrote:
> <nina.holly@...> writes:
>
>> 
>> Hi Mike,
>>    The build completes without an error, just no
>> arm-linux-g++ compiler gets built.  So I'm not sure
>> if the patch would fix the problem.
>> 
>> Nina
>>
>Must be something more fundamental wrong - you'll have to try (e.g.)

For a native compiler on the target, make sure to set
BR2_PACKAGE_GCC_TARGET=y

[Buildroot] web browser with buildroot/uClibc and Qtopia 4

[nina.holly at aerende.com]

Hi,
    Can anyone suggest a web browser that can be
used with buildroot/uClibc and Qtopia 4?

Thanks,

Nina

[Buildroot] c++ cross compiler

[David Prime]

Hi,

Anyone with a working arm c++ cross compiler care to share their buildroot
.config ?

When I attempt to build it, it appears not to build the cpp libraries to
go with it, so when I try to link my programs it all fails miserably :(


David

[Buildroot] c++ cross compiler

[David Prime]

I've tried a few:

GCC 3.4.6, 4.1, 4.2
Using the daily snapshot - although I will try the one you are using to
see what happens. What's that monetary_members.cc all about? Is it a fatal
mistake not to use that patch or is it just some obscure function that
will be broken?


David


On Sun, November 26, 2006 11:47 pm, Gilad Rom wrote:
> I'm using the 20061711 snapshot with gcc-4.1.0, including
> the backported monetary_members.cc 4.2.0 patch, and it works fine.
>
> Which versions are you using?
>
>
> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>
>> Hi,
>>
>>
>> Anyone with a working arm c++ cross compiler care to share their
>> buildroot .config ?
>>
>>
>> When I attempt to build it, it appears not to build the cpp libraries
>> to go with it, so when I try to link my programs it all fails miserably
>> :(
>>
>>
>>
>> David
>>
>>
>> _______________________________________________
>> buildroot mailing list buildroot at uclibc.org
>> http://busybox.net/mailman/listinfo/buildroot
>>
>>
>

[Buildroot] c++ cross compiler

[David Prime]

Aha. OK, by ported, do you mean copied and pasted to the 4.1 patch dir, or
did you actually port it in some way? If you had to do anything other than
copy it, I would be grateful to know what.

Thanks.

David

On Mon, November 27, 2006 9:57 am, Gilad Rom wrote:
> its the 204-... patch from the toolchain/gcc/4.2.0 directory, and it is
> needed if you intend on building a C++ toolchain. Without it, the build
> simply breaks.
>
> Gilad
>
>
> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>
>> I've tried a few:
>>
>>
>> GCC 3.4.6, 4.1, 4.2
>> Using the daily snapshot - although I will try the one you are using to
>> see what happens. What's that monetary_members.cc all about? Is it a
>> fatal mistake not to use that patch or is it just some obscure function
>> that will be broken?
>>
>>
>> David
>>
>>
>>
>> On Sun, November 26, 2006 11:47 pm, Gilad Rom wrote:
>>
>>> I'm using the 20061711 snapshot with gcc-4.1.0, including
>>> the backported monetary_members.cc 4.2.0 patch, and it works fine.
>>>
>>> Which versions are you using?
>>>
>>>
>>>
>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>
>>>
>>>> Hi,
>>>>
>>>>
>>>>
>>>> Anyone with a working arm c++ cross compiler care to share their
>>>> buildroot .config ?
>>>>
>>>>
>>>> When I attempt to build it, it appears not to build the cpp
>>>> libraries to go with it, so when I try to link my programs it all
>>>> fails miserably :(
>>>>
>>>>
>>>>
>>>>
>>>> David
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> buildroot mailing list buildroot at uclibc.org
>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> buildroot mailing list buildroot at uclibc.org
>> http://busybox.net/mailman/listinfo/buildroot
>>
>>
>

[Buildroot] c++ cross compiler

[David Prime]

Hmm, the patch error output for that file isnt very helpful - could I just
get rid of the numeric_members.cc part of the patch?

On Mon, November 27, 2006 10:03 am, Gilad Rom wrote:
> Well, the patch file actually patches two files, monetary_members.cc
> and numeric_members.cc (If I remember correctly, unfortunately I dont have
> the sources here at the moment), and the second part of the patch needs to
> be modified. It is, however, very simple and straightforward. a couple of
> UCLIBC #ifdef's here and there, nothing too nasty).
>
>
> Gilad
>
>
> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>
>> Aha. OK, by ported, do you mean copied and pasted to the 4.1 patch dir,
>> or did you actually port it in some way? If you had to do anything other
>> than copy it, I would be grateful to know what.
>>
>> Thanks.
>>
>>
>> David
>>
>>
>> On Mon, November 27, 2006 9:57 am, Gilad Rom wrote:
>>
>>> its the 204-... patch from the toolchain/gcc/4.2.0 directory, and it
>>> is needed if you intend on building a C++ toolchain. Without it, the
>>> build simply breaks.
>>>
>>> Gilad
>>>
>>>
>>>
>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>
>>>
>>>> I've tried a few:
>>>>
>>>>
>>>>
>>>> GCC 3.4.6, 4.1, 4.2
>>>> Using the daily snapshot - although I will try the one you are using
>>>> to see what happens. What's that monetary_members.cc all about? Is
>>>> it a fatal mistake not to use that patch or is it just some obscure
>>>> function that will be broken?
>>>>
>>>>
>>>> David
>>>>
>>>>
>>>>
>>>>
>>>> On Sun, November 26, 2006 11:47 pm, Gilad Rom wrote:
>>>>
>>>>
>>>>> I'm using the 20061711 snapshot with gcc-4.1.0, including
>>>>> the backported monetary_members.cc 4.2.0 patch, and it works fine.
>>>>>
>>>>>
>>>>> Which versions are you using?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Anyone with a working arm c++ cross compiler care to share
>>>>>> their buildroot .config ?
>>>>>>
>>>>>>
>>>>>> When I attempt to build it, it appears not to build the cpp
>>>>>> libraries to go with it, so when I try to link my programs it
>>>>>> all fails miserably :(
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> David
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> buildroot mailing list buildroot at uclibc.org
>>>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> buildroot mailing list buildroot at uclibc.org
>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> buildroot mailing list buildroot at uclibc.org
>> http://busybox.net/mailman/listinfo/buildroot
>>
>>
>

[Buildroot] c++ cross compiler

[David Prime]

Well I have no idea whats going on with the patch, so I'll just make
random changes til it works! (it's a very short patch, afterall).

David


On Mon, November 27, 2006 10:40 am, Gilad Rom wrote:
> I dont think so - it requires patching both files for successful
> compilation.
>
>
> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>
>> Hmm, the patch error output for that file isnt very helpful - could I
>> just get rid of the numeric_members.cc part of the patch?
>>
>> On Mon, November 27, 2006 10:03 am, Gilad Rom wrote:
>>
>>> Well, the patch file actually patches two files, monetary_members.cc
>>> and numeric_members.cc (If I remember correctly, unfortunately I dont
>>> have the sources here at the moment), and the second part of the patch
>>> needs to be modified. It is, however, very simple and straightforward.
>>> a couple of UCLIBC #ifdef's here and there, nothing too nasty).
>>>
>>>
>>>
>>> Gilad
>>>
>>>
>>>
>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>
>>>
>>>> Aha. OK, by ported, do you mean copied and pasted to the 4.1 patch
>>>> dir, or did you actually port it in some way? If you had to do
>>>> anything other than copy it, I would be grateful to know what.
>>>>
>>>> Thanks.
>>>>
>>>>
>>>>
>>>> David
>>>>
>>>>
>>>>
>>>> On Mon, November 27, 2006 9:57 am, Gilad Rom wrote:
>>>>
>>>>
>>>>> its the 204-... patch from the toolchain/gcc/4.2.0 directory, and
>>>>> it is needed if you intend on building a C++ toolchain. Without
>>>>> it, the build simply breaks.
>>>>>
>>>>> Gilad
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>>>
>>>>>
>>>>>
>>>>>> I've tried a few:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> GCC 3.4.6, 4.1, 4.2
>>>>>> Using the daily snapshot - although I will try the one you are
>>>>>> using to see what happens. What's that monetary_members.cc all
>>>>>> about? Is it a fatal mistake not to use that patch or is it just
>>>>>> some obscure function that will be broken?
>>>>>>
>>>>>>
>>>>>> David
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Sun, November 26, 2006 11:47 pm, Gilad Rom wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> I'm using the 20061711 snapshot with gcc-4.1.0, including
>>>>>>> the backported monetary_members.cc 4.2.0 patch, and it works
>>>>>>> fine.
>>>>>>>
>>>>>>>
>>>>>>> Which versions are you using?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 11/27/06, David Prime <david@primefarm.co.uk> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Anyone with a working arm c++ cross compiler care to share
>>>>>>>> their buildroot .config ?
>>>>>>>>
>>>>>>>>
>>>>>>>> When I attempt to build it, it appears not to build the cpp
>>>>>>>>  libraries to go with it, so when I try to link my programs
>>>>>>>> it all fails miserably :(
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> David
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> buildroot mailing list buildroot at uclibc.org
>>>>>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> buildroot mailing list buildroot at uclibc.org
>>>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> buildroot mailing list buildroot at uclibc.org
>>>> http://busybox.net/mailman/listinfo/buildroot
>>>>
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> buildroot mailing list buildroot at uclibc.org
>> http://busybox.net/mailman/listinfo/buildroot
>>
>>
>