[Buildroot] [PATCH 0/6 RFC] toolchain/external: use generic extract commands (branch yem/extract-cmds)
Arnout Vandecappelle
arnout at mind.be
Sat Oct 3 14:06:05 UTC 2015
On 03-10-15 14:31, Romain Naour wrote:
> Hi Yann,
>
> Le 03/09/2015 00:51, Yann E. MORIN a écrit :
>> Hello All!
>>
>> This series is an attempt at simplifying the way external toolchains are
>> extracted.
>>
>> Currently, external toolchains use custom extract commands, because they
>> want to exclude a bumch of files during extraction, so as to save a bit
>> of space (locales in some toolchains can account for up to 80% of the
>> size of the toolchain as a whole).
>>
>> And it turns out, gcc also wants to exclude a bunch of files (java and
>> go, testsuites).
>>
>> Using custom extract commands means that those packages (and critical
>> ones, at that) can not benefit from the enhancements and fixes made to
>> the generic commands, like the automatic triiping of components.
>>
>> In this series:
>>
>> - we first introduce the support for the exclusion list
>> - we always break/dereference hardlinks
>> - we make gcc use the exclusion list
>> - we then make the external toolchains use it (in two passes: one for
>> the non-Blackfin case, one for it, as it is 'seecial')
>> - finaly, we introduce the Codescape MTI toolchain from Vincent
>>
>> Thomas, there is a question for you in the second commit: would you
>> care to explain what your goal was when you added --hard-dereference
>> when extracting the Blackfin toolchains?
>>
>
> What do you think about a new Kconfig option that allow users to define a list
> of excluded files or directories.
> Some toolchains (ie SourceryCodeBench standard) can bundle eclipse or other
> stuff that are not used in the build process.
>
> Something like:
>
> config BR2_TOOLCHAIN_EXTERNAL_EXCLUDES
> string "Exclude unwanted directories from the toolchain archive"
> default ""
> help
> If some directories in the toolchain archive are not intended
> to be used in the build process, this option define a
> space-separated list of patterns to exclude when extracting
> the archive.
>
> ifneq ($(BR2_TOOLCHAIN_EXTERNAL_EXCLUDES),)
> TOOLCHAIN_EXTERNAL_EXCLUDES = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_EXCLUDES))
> endif
>
> Thoughts ?
Sounds good to me. But it's only for the custom external toolchains, so it
should be named BR2_TOOLCHAIN_EXTERNAL_CUSTOM_EXCLUDES (yes, it sounds wrong, as
if the excludes are custom, but it is what it is).
Regards,
Arnout
>
> Best regards,
> Romain
>
>> Regards,
>> Yann E. MORIN.
>
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--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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