Add additional libraries and header files to toolchain

Add additional libraries and header files to toolchain

[Tobias Andresen]

Hi,

what would be the best way to add additional libraries and header files 
(i.e. libusb, ...) to an existing toolchain
or add them to the build process of crosstools-ng so the user can select 
a special version like glibc etc.
Thanks in advance.

Best regards

Tobias




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Re: Add additional libraries and header files to toolchain

[Chris Packham]

Hi Tobias,

On 02/16/2016 07:40 PM, Tobias Andresen wrote:
> Hi,
>
> what would be the best way to add additional libraries and header files
> (i.e. libusb, ...) to an existing toolchain
> or add them to the build process of crosstools-ng so the user can select
> a special version like glibc etc.
> Thanks in advance.
>

Generally you wouldn't add libraries to crosstool-ng. glibc/uclibc/musl 
are special because gcc needs to be built against the specific libc 
implementation.

libusb and others aren't required by gcc so don't generally fit the 
bill. What I suspect you want is a build system that works with 
toolchains produced by crosstool-ng. Buildroot (https://buildroot.org) 
is one such build system but I'm sure there are others.



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Re: Add additional libraries and header files to toolchain

[Tobias Andresen]

Hi Chris,

i agree that libraries like libusb etc. should normally not part of the 
toolchain.
But sometimes it seems to be easier to provide a complete toolchain to 
someone else containing those libraries (if required in special versions)
than providing an rootfs or similar wich contains them.

Regards

Tobias



#Am 16.02.2016 um 21:01 schrieb Chris Packham:
> Hi Tobias,
>
> On 02/16/2016 07:40 PM, Tobias Andresen wrote:
>> Hi,
>>
>> what would be the best way to add additional libraries and header files
>> (i.e. libusb, ...) to an existing toolchain
>> or add them to the build process of crosstools-ng so the user can select
>> a special version like glibc etc.
>> Thanks in advance.
>>
> Generally you wouldn't add libraries to crosstool-ng. glibc/uclibc/musl
> are special because gcc needs to be built against the specific libc
> implementation.
>
> libusb and others aren't required by gcc so don't generally fit the
> bill. What I suspect you want is a build system that works with
> toolchains produced by crosstool-ng. Buildroot (https://buildroot.org)
> is one such build system but I'm sure there are others.
>
>


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RE: Add additional libraries and header files to toolchain

[Dan Wilder]

I wonder if it would make sense to add them to the toolchain as a separate step afterwards?

--
Dan Wilder
________________________________________
From: crossgcc-owner@sourceware.org [crossgcc-owner@sourceware.org] on behalf of Tobias Andresen [tobiasarp@web.de]
Sent: Tuesday, February 16, 2016 10:35 PM
To: Chris Packham; crossgcc@sourceware.org
Subject: Re: Add additional libraries and header files to toolchain

Hi Chris,

i agree that libraries like libusb etc. should normally not part of the
toolchain.
But sometimes it seems to be easier to provide a complete toolchain to
someone else containing those libraries (if required in special versions)
than providing an rootfs or similar wich contains them.

Regards

Tobias



#Am 16.02.2016 um 21:01 schrieb Chris Packham:
> Hi Tobias,
>
> On 02/16/2016 07:40 PM, Tobias Andresen wrote:
>> Hi,
>>
>> what would be the best way to add additional libraries and header files
>> (i.e. libusb, ...) to an existing toolchain
>> or add them to the build process of crosstools-ng so the user can select
>> a special version like glibc etc.
>> Thanks in advance.
>>
> Generally you wouldn't add libraries to crosstool-ng. glibc/uclibc/musl
> are special because gcc needs to be built against the specific libc
> implementation.
>
> libusb and others aren't required by gcc so don't generally fit the
> bill. What I suspect you want is a build system that works with
> toolchains produced by crosstool-ng. Buildroot (https://buildroot.org)
> is one such build system but I'm sure there are others.
>
>


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